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Schweitzer Engineering Laboratories SEL-311C, Instruction Manual

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13.23

Date Code 20060320

Instruction Manual

SEL-311C Relay

Testing and Troubleshooting

Test Procedures

Equation 13.2

Coincidentally, these voltage and current signals could represent a forward 
single line-ground fault on a system with a 90° impedance angle. Normally, a 
forward fault results in a negative Z2c value.

Here is an example for a reverse single line-ground fault.

∠

Z1ANG = 90°

V

2

 = 10 

∠

180° volts, secondary

I

2

 = 2 

∠

90° amps, secondary

Equation 13.3

Notice that the result of 

Equation 13.1

 is positive for a reverse fault and 

negative for a forward fault. This result is consistent with actual behavior on 
the power system.

The relay determines fault direction by comparing the result of 

Equation 13.1

 

to forward and reverse impedance thresholds that are dependent upon the Z2F 
and Z2R relay settings and the magnitude of negative-sequence voltage 
divided by the magnitude of negative-sequence current.

When Z2c is less than the forward Z2 threshold, Z2FT, the fault is in the 
forward direction, so the relay sets the F32Q and F32QG elements, if other 
supervisory conditions permit. When Z2c is greater than the reverse Z2 
threshold, Z2RT, the fault is in the reverse direction, so the relay sets the R32Q 
and R32QG elements, if other supervisory conditions permit.

The forward directional threshold is calculated through use of 

Equation 13.4

 

when Z2F is negative or 

Equation 13.5

 when Z2F is positive.

When Z2F 

≤

 0:

Equation 13.4

When Z2F 

>

 0:

Equation 13.5

Where:

Equation 13.6

The reverse directional threshold is calculated through use of 

Equation 13.7

 

when Z2R is positive or 

Equation 13.8

 when Z2R is negative.

Z2c

Re 10 180

°

1 90

°

∠

2

90

°

–

∠

• 

(

)

• 

∠

*

[

]

2

2

--------------------------------------------------------------------------------------------

=

–20 ohms

4

-----------------------

=

–5 ohms

=

Z2c

Re 10 180

°

1 90

°

∠

2 +  90

°

∠

• 

(

)

• 

∠

*

[

]

2

2

----------------------------------------------------------------------------------------------

=

20 ohms

4

--------------------

=

5 ohms

=

Z2FT

0.75

Z2F

0.25

Z2m

• 

–

• 

=

Z2FT

1.25

Z2F

0.25

Z2m

• 

–

• 

=

Z2m

V

2

I

2

---------

=

Summary of Contents for SEL-311C

Page 1: ...20060320 SEL 311C Relay Protection and Automation System Instruction Manual PM311C 01 NB ...

Page 2: ...e raccorder les contacts de sortie à haut pouvoir de coupure ATTENTION Il y a un danger d explosion si la pile électrique n est pas correctement remplacée Utiliser exclusivement Ray O Vac No BR2335 ou un équivalent recommandé par le fabricant Se débarrasser des piles usagées suivant les instructions du fabricant ATTENTION Ne pas mettre les variables SV4 DLC et SV5 LLC au UN logique en même temps C...

Page 3: ...ut Contacts 2 12 Optoisolated Inputs 2 14 Current Transformer Inputs 2 14 Potential Transformer Inputs 2 14 Wye Connected Voltages 2 14 Serial Ports 2 14 IRIG B Time Code Input 2 15 SEL 311C AC DC Connection Diagrams for Various Applications 2 16 Circuit Board Connections 2 19 Accessing the Relay Circuit Boards 2 19 Output Contact Jumpers 2 23 Extra Alarm Output Contact Control Jumper 2 23 Passwor...

Page 4: ... Elements 3 55 Frequency Element Settings 3 55 Frequency Element Operation 3 58 Frequency Element Uses 3 59 Section 4 Loss of Potential CCVT Transient Detection Load Encroachment and Directional Element Logic Loss of Potential Logic 4 1 Setting ELOP Yor Y1 4 2 Setting ELOP Y 4 2 Setting ELOP N 4 3 CCVT Transient Detection Logic 4 4 Load Encroachment Logic 4 5 Settings Ranges 4 6 Load Encroachment ...

Page 5: ...tional Comparison Unblocking Logic 5 19 Use Existing SEL 321 DCUB Application Guide for the SEL 311C 5 19 External Inputs 5 19 Timer Settings 5 20 Logic Outputs 5 20 Installation Variations 5 23 Directional Comparison Blocking Logic 5 25 Use Existing SEL 321 DCB Application Guide for the SEL 311C 5 25 External Inputs 5 25 Timer Settings 5 25 Logic Outputs 5 26 Installation Variations 5 28 Front Pa...

Page 6: ...6 Reset Latch Bits for Active Setting Group Change 7 17 Make Latch Control Switch Settings With Care 7 17 Multiple Setting Groups 7 19 Active Setting Group Indication 7 19 Selecting the Active Setting Group 7 19 Operation of SELOGIC Control Equation Settings SS1 SS6 7 19 Operation of Settings SS1 SS6 7 20 Operation of Serial Port GROUP Command and Front Panel GROUP Pushbutton 7 20 Relay Disabled M...

Page 7: ...mand Metering 8 20 Comparison of Thermal and Rolling Demand Meters 8 20 Demand Meter Settings 8 24 Demand Current Logic Output Application Raise Pickup for Unbalance Current 8 25 View or Reset Demand Metering Information 8 26 Demand Metering Updating and Storage 8 27 Energy Metering 8 28 View or Reset Energy Metering Information 8 28 Energy Metering Updating and Storage 8 28 Maximum Minimum Meteri...

Page 8: ...ions Unique to the Front Panel Interface 11 6 Reclosing Relay Shot Counter Screen 11 6 Local Control 11 8 Rotating Default Display 11 12 Scroll Lock Control of Front Panel LCD 11 15 Stop Scrolling Lock 11 15 Restart Scrolling Unlock 11 15 Single Step 11 15 Exit 11 15 Cancel 11 16 Additional Rotating Default Display Example 11 16 Section 12 Standard Event Reports and SER Overview 12 1 Standard 15 3...

Page 9: ... 1 SEL 221G to SEL 311C Settings Conversion Guide 14 2 Key Differences Between the SEL 221G and the SEL 311C 14 3 Application Settings 14 3 Convert SEL 221G Primary Quantities to SEL 311C Secondary Quantities 14 4 Convert SEL 221G Relay Settings to SEL 311C Settings 14 4 Convert SEL 221G Output Mask Logic Settings to SELOGIC Control Equations 14 6 SEL 221G 5 to SEL 311C Settings Conversion Guide 1...

Page 10: ...tings 14 54 Convert SEL 2PG10 Primary Quantities to SEL 311C Secondary Quantities 14 54 Convert SEL 2PG10 Settings to SEL 311C Settings 14 54 Convert SEL 2PG10 Output Mask Logic Settings to SELOGIC Control Equations 14 56 SEL 311C Settings Sheet Application Setting 221G SEL 311C Settings Sheet Application Setting 221G 5 SEL 311C Settings Sheet Application Setting 221H SEL 311C Settings Sheet Appli...

Page 11: ...ce Definite Time Overcurrent Elements F 1 Setting Negative Sequence Time Overcurrent Elements F 2 Other Negative Sequence Overcurrent Element References F 3 Appendix G SEL Synchrophasors Overview G 1 Introduction G 2 Synchrophasor Measurement G 3 External Equipment Compensation G 4 Protocol Operation G 5 Transmit Mode Control G 5 Settings G 8 Descriptions of Synchrophasor Settings G 9 Synchrophaso...

Page 12: ... Unsolicited Fast SER Protocol Introduction K 1 Make Sequential Events Recorder SER Settings With Care K 2 Recommended Message Usage K 3 Functions and Function Codes K 4 01 Function Code Enable Unsolicited Data Transfer Sent From Master to Relay K 4 02 Function Code Disable Unsolicited Data Transfer Sent From Master to Relay K 5 18 Function Unsolicited Fast SER Response Sent From Relay to Master K...

Page 13: ... Elements 4 28 Table 5 1 SEL 311C Front Panel Target LED Definitions 5 31 Table 6 1 Relay Word Bit and Front Panel Correspondence to Reclosing Relay States 6 12 Table 6 2 Reclosing Relay Timer Settings and Setting Ranges 6 14 Table 6 3 Relay Word Bits Used to Monitor Open Interval and Reset Timing 6 16 Table 6 4 Shot Counter Correspondence to Relay Word Bits and Open Interval Times 6 17 Table 6 5 ...

Page 14: ...ypes of Overcurrent Elements 13 21 Table 13 5 Test Quantities for Zone 2 Phase Distance Element 13 35 Table 13 6 Test Quantities for Zone 2 Ground Mho Distance Element 13 42 Table 13 7 Test Quantities for Zone 2 Ground Quadrilateral Distance Element Reactive Reach 13 47 Table 13 8 Test Quantities for Zone 2 Ground Quadrilateral Distance Element Resistive Reach 13 52 Table 13 9 Test Result Problems...

Page 15: ... D 2 Table D 2 ASCII Configuration Message List D 2 Table D 3 A5C0 Relay Definition Block D 3 Table D 4 A5C1 Fast Meter Configuration Block D 3 Table D 5 A5D1 Fast Meter Data Block D 5 Table D 6 A5C2 A5C3 Demand Peak Demand Fast Meter Configuration Messages D 5 Table D 7 A5D2 A5D3 Demand Peak Demand Fast Meter Message D 8 Table D 8 A5CE Fast Operate Configuration Block D 9 Table D 9 A5E0 Fast Oper...

Page 16: ...xiv List of Tables SEL 311C Relay Instruction Manual Date Code 20060320 Table K 5 Acknowledge Message K 7 Table K 6 Response Codes K 7 Table L 1 ACSELERATOR QuickSet System Requirements L 2 ...

Page 17: ...nsmission Line 2 16 Figure 2 14 SEL 311C Provides Distance and Overcurrent Protection and Reclosing for a Transmission Line Current Polarization Source Connected to Channel IP 2 17 Figure 2 15 SEL 311C Line Protection Through a Delta Wye Transformer Using Compensator Distance Elements 2 18 Figure 2 16 Jumper Connector and Major Component Locations on the SEL 311C Main Board 2 20 Figure 2 17 Jumper...

Page 18: ...rized Directional Elements 4 12 Figure 4 8 Best Choice Ground Directional Logic 4 13 Figure 4 9 Negative Sequence Voltage Polarized Directional Element for Ground Distance and Residual Ground Overcurrent Elements 4 14 Figure 4 10 Zero Sequence Voltage Polarized Directional Element for Ground Distance and Residual Ground Overcurrent Elements 4 15 Figure 4 11 Channel IP Current Polarized Directional...

Page 19: ...able Disable Reclosing Relay 7 14 Figure 7 14 Latch Control Switch Controlled by a Single Input to Enable Disable Reclosing 7 14 Figure 7 15 Latch Control Switch Operation Time Line 7 16 Figure 7 16 Time Line for Reset of Latch Bit LT2 After Active Setting Group Change 7 17 Figure 7 17 Latch Control Switch With Time Delay Feedback Controlled by a Single Input to Enable Disable Reclosing 7 18 Figur...

Page 20: ...play Point Labels 11 14 Figure 12 1 Example Event Summary 12 4 Figure 12 2 Example Synchrophasor Level Precise Event Report 1 16 Cycle Resolution 12 8 Figure 12 3 Example Standard 15 Cycle Event Report 1 4 Cycle Resolution 12 24 Figure 12 4 Derivation of Event Report Current Values and RMS Current Values From Sampled Current Waveform 12 25 Figure 12 5 Derivation of Phasor RMS Current Values From E...

Page 21: ...paring HyperTerminal for ID Command Display B 16 Figure F 1 Minimum Response Time Added to a Negative Sequence Time Overcurrent Element 51QT F 2 Figure G 1 Phase Reference G 3 Figure G 2 Waveform at Relay Terminals May Have a Phase Shift G 4 Figure G 3 Correction of Measured Phase Angle G 4 Figure G 4 Sample MET PM Command Response G 13 Figure H 1 Result of Rising Edge Operators on Individual Elem...

Page 22: ...This page intentionally left blank ...

Page 23: ...2 11 show the SEL 311C front and rear panels Section 3 Distance Out of Step Overcurrent Voltage Synchronism Check and Frequency Elements Describes the operation of the following Phase and ground distance elements phase mho compensator distance ground mho quadrilateral ground and Zone 1 extension Out of step elements Instantaneous definite time overcurrent elements phase residual ground and negativ...

Page 24: ...tion 7 Inputs Outputs Timers and Other Control Logic Describes the operation of the following Optoisolated inputs IN101 IN106 models 0311C00x and 0311C01x and IN201 IN208 model 0311C01x Local control switches local bit outputs LB1 LB16 Remote control switches remote bit outputs RB1 RB16 Latch control switches latch bit outputs LT1 LT16 Multiple setting groups six available Programmable timers time...

Page 25: ...ttons and correspondence to serial port commands Local control switches local bit outputs LB1 LB16 Rotating default displays and display points Section 12 Standard Event Reports and SER Describes the following Standard 15 30 60 and 180 cycle event reports Event summaries Sequential events recorder SER report Section 13 Testing and Troubleshooting Describes the following General testing philosophy ...

Page 26: ...mmunications and Commands Page Numbering This manual shows page identifiers at the top of each page see the figure below Page Number Format The page number appears at the outside edge of each page a vertical bar separates the page number from the page title block The page numbers of the SEL 311C Relay Instruction Manual are represented by the following building blocks Section number Actual page nu...

Page 27: ...hose in the current version of your SEL 311C Typographic Conventions Example Description STATUS Commands typed at a command line interface on a PC Enter Single keystroke on a PC keyboard Ctrl D Multiple combination keystroke on a PC keyboard Start Settings PC software dialog boxes and menu selections The character indicates submenus CLOSE Relay front panel pushbuttons ENABLE Relay front or rear pa...

Page 28: ...ws Indicates a potentially hazardous situation that if not avoided may result in minor or moderate injury or equipment damage CAUTION Indicates a potentially hazardous situation that if not avoided could result in death or serious injury WARNING Indicates an imminently hazardous situation that if not avoided will result in death or serious injury DANGER ...

Page 29: ...311C Relay Section 1 Introduction Specifications Overview This section includes the following SEL 311C Models on page 1 2 Applications on page 1 3 AC DC Connections on page 1 4 Communications Connections on page 1 8 Specifications on page 1 10 ...

Page 30: ... instruction manual when differences among the SEL 311C models in Table 1 1 are explained model numbers are referenced for clarity Differences between models 0311C00x and 0311C01x appear in references to optoisolated inputs output contacts and board jumpers Figure 2 16 and Figure 2 17 and Table 2 2 through Table 2 4 show the labeling differences between the board jumpers Table 1 1 SEL 311C Models ...

Page 31: ...ifications Applications Applications Figure 1 1 SEL 311C Transmission Line Protection With Pilot Protection MIRRORED BITS Communications Reclosing and Synchronism Check SEL 311C SEL 311C SEL 311C Compensator Distance Application TX COMM RX EQUIP TX COMM RX EQUIP MIRRORED BITS ...

Page 32: ...s Dual Terminal Labels For installation in systems with drawings designed for SEL 221 relays use the numeric terminal labels Section 14 Application Settings for SEL 221 Series Relays describes how to easily set the SEL 311C to emulate the popular SEL 221 relays For installation in systems with drawings designed for SEL 311C relays use the alphanumeric terminal labels See Figure 2 2 through Figure ...

Page 33: ...16 A13 A13 A14 A14 A15 A15 A11 A11 A12 A12 A05 A05 A08 A08 A10 A10 A09 A09 A06 A06 A07 A07 A03 A03 A04 A04 A02 A02 A01 A01 OUT101 OUT101 OUT102 OUT102 OUT103 OUT103 OUT104 OUT104 OUT105 OUT105 OUT106 OUT106 OUT107 OUT107 ALARM ALARM PROGRAMMABLE OUTPUT CONTACTS PROGRAMMABLE OUTPUT CONTACTS 1 1 2 2 3 3 4 4 5 5 ISOLATED ISOLATED DB9 DB9 DB9 DB9 PORT 1 PORT 1 PORT 2 REAR PORT 2 REAR EIA 232 IRIG B EI...

Page 34: ...he output contacts are high current interrupting output contacts they are polarity dependent See Table 1 1 for information on SEL 311C models with the high current interrupting output contact option See Output Contacts on page 2 12 for more information on the polarity dependence of high current interrupting output contacts ...

Page 35: ...7 B07 B06 B06 B09 B09 B10 B10 B08 B08 B05 B05 B12 B12 B11 B11 B15 B15 B14 B14 B13 B13 B16 B16 PROGRAMMABLE OPTOISOLATED INPUTS PROGRAMMABLE OPTOISOLATED INPUTS B25 B25 B26 B26 B27 B27 B28 B28 B29 B29 B30 B30 B31 B31 B32 B32 B33 B33 B34 B34 B35 B35 B36 B36 IN IN 201 201 IN IN 202 202 204 204 IN IN 203 203 IN IN IN IN 206 206 205 205 IN IN JUMPER CONFIGURABLE JUMPER CONFIGURABLE OUT210 OUT210 OUT209...

Page 36: ...C RELAY METALLIC CABLE PORT 2 PORT 2 SEL 2810 FIBER OPTIC or C273AFD CABLE C273AFZ PORT 1 COMPUTER PORT 1 PORT 1 Metallic Cable Connection Optical Cable Connection SEL 311C RELAY 1 SEL 311C RELAY 2 SEL 2032 Front Panel Rear Panel Front Panel PORT 2 PORT 2 PORT F C234A PORT F EIA 485 CONNECTIONS LOCAL CONNECTIONS DATA AND TIME SYNCHRONIZATION CONNECTIONS CONNECT TO THE SEL 2032 ONCE AND COMMUNICATE...

Page 37: ...uction Specifications Communications Connections Figure 1 4 SEL 311C Communications Connections Examples Continued SEL 2800 SEL 2800 IN101 Relay SEL 2800 SEL 2800 SEL 2505 Transformer Alarms SEL 2800 SEL 2100 Protection Logic Processor SEL 311C Relay SEL 311C Relay ...

Page 38: ... Dropout Time 8 ms typical Breaking Capacity 10000 operations 48 Vdc 10 0 A L R 40 ms 125 Vdc 10 0 A L R 40 ms 250 Vdc 10 0 A L R 20 ms Cyclic Capacity 4 cycles second followed by 2 minutes idle for thermal dissipation 48 Vdc 10 0 A L R 40 ms 125 Vdc 10 0 A L R 40 ms 250 Vdc 10 0 A L R 20 ms Note Do not use high current interrupting output contacts to switch ac control signals These outputs are po...

Page 39: ...b 55 C 6 cycles 95 humidity Dry Heat IEC 60068 2 2 1974 Test Bd 16 hr 85 C Object Penetration IEC 60529 1989 IP30 IP54 Electrostatic Discharge Test ESD IEC 60255 22 2 1996 Severity Level 4 8 kV contact 15 kV air Fast Transient Disturbance IEC 60255 22 4 1992 IEC 61000 4 4 1995 Severity Level 4 4 kV on power supply 2 kV on inputs and outputs Radiated Radio Frequency IEC 60255 22 3 1989 IEEE C37 90 ...

Page 40: ...5 to 64 Ω sec 0 01 Ω steps 5 A nominal OFF 0 25 to 320 Ω sec 0 01 Ω steps 1 A nominal Quadrilateral Resistance Reach OFF 0 05 to 50 Ω sec 0 01 Ω steps 5 A nominal OFF 0 25 to 250 Ω sec 0 01 Ω steps 1 A nominal Minimum sensitivity is controlled by the pickup of the supervising phase and residual overcurrent elements for each zone Accuracy 5 of setting at line angle for 30 SIR 60 3 of setting at lin...

Page 41: ...requency Pickup Accuracy 0 003 Hz Phase Angle Range 0 80 1 steps Phase Angle Accuracy 4 Definite Time Over or Underfrequency Elements 81 Pickup Range 41 65 Hz 0 01 Hz steps Pickup Time 32 ms at 60 Hz Max Time Delays 2 16 000 cycles 0 25 cycle steps Maximum Definite Time Delay Accuracy 0 25 cycles 1 of setting at 60 Hz Steady State plus Transient Overshoot 0 01 Hz Supervisory 27 20 150 V 5 0 1 V ...

Page 42: ...This page intentionally left blank ...

Page 43: ...tion 2 Installation Relay Mounting Figure 2 1 SEL 311C Dimensions and Panel Mount Cutout To better use Figure 2 1 refer to Table 1 1 for rack unit height information on SEL 311C models 2U or 3U BRACKETS MUST BE REVERSED IN ORDER FOR PROJECTION RACK MOUNTING ...

Page 44: ...8 A17 A17 A15 A15 A14 A14 23 23 22 22 20 20 21 21 19 19 VS VS NS NS N N 18 18 17 17 15 15 16 16 14 14 IN104 IN104 SERIAL SERIAL N C N C PORT PORT 1 1 IN106 IN106 IN105 IN105 IN103 IN103 IN102 IN102 IN101 IN101 ALARM ALARM Z03 Z03 39 39 38 38 Z11 Z11 Z10 Z10 37 37 36 36 Z09 Z09 Z08 Z08 35 35 34 34 Z07 Z07 Z06 Z06 33 33 32 32 Z05 Z05 Z04 Z04 29 29 Z01 Z01 30 30 31 31 Z02 Z02 A11 A11 A13 A13 A12 A12 ...

Page 45: ...ART NO NO SUP SUP LOGIC LOGIC PWR PWR ROTATION ROTATION INPUT INPUT TERMINALS MAY CAUSE TERMINALS MAY CAUSE CONTACT WITH INSTRUMENT CONTACT WITH INSTRUMENT RESULT IN INJURY OR DEATH RESULT IN INJURY OR DEATH ELECTRICAL SHOCK WHICH CAN ELECTRICAL SHOCK WHICH CAN GND GND 46 46 Z27 Z27 EIA 485 EIA 485 SHIELD SHIELD 5 5 4 4 RX RX 2 2 1 1 3 3 PIN PIN TX TX TX TX RX RX D A N G E R D A N G E R PORT 2 EIA...

Page 46: ...IAL SERIAL 9 9 PORT F PORT F RECLOSER RECLOSER ZONE LEVEL ZONE LEVEL SCHWEITZER ENGINEERING LABORATORIES SCHWEITZER ENGINEERING LABORATORIES PROTECTION AND AUTOMATION SYSTEM PROTECTION AND AUTOMATION SYSTEM 196 0270 196 0270 51 51 LO LO EXIT EXIT CNTRL CNTRL SET SET OTHER OTHER STATUS STATUS METER METER 3 3 4 4 TARGET TARGET LAMP LAMP TEST TEST CANCEL CANCEL RESET RESET EVENTS EVENTS SELECT SELECT...

Page 47: ...MM 1 1 EN EN 1 1 G G 2 2 FAULT TYPE FAULT TYPE B B A A C C SERIAL SERIAL 9 9 PORT F PORT F RECLOSER RECLOSER ZONE LEVEL ZONE LEVEL SCHWEITZER ENGINEERING LABORATORIES PROTECTION AND AUTOMATION SYSTEM 196 0271 196 0271 RESET RESET 51 51 LO LO TARGET TARGET TEST TEST LAMP LAMP 3 3 4 4 SEL 311C RS RS SOTF SOTF TIME TIME TRIP TRIP COMM COMM 1 1 EN EN 1 1 G G 2 2 FAULT TYPE FAULT TYPE B B A A C C SERIA...

Page 48: ...2 6 SEL 311C Relay Instruction Manual Date Code 20060320 Installation Front and Rear Panel Diagrams Figure 2 6 SEL 311C Front Panel Drawings Models 0311C01V1 and 0311C01V2 ...

Page 49: ...RIP TRIP 1 1 EN EN 2 2 G G 1 1 C C B B FAULT FAULT TYPE TYPE 9 9 PORT F PORT F SERIAL SERIAL A A 79 79 LEVEL LEVEL 196 0273 196 0273 LABORATORIES ENGINEERING SCHWEITZER SEL 311C 51 51 LO LO EXIT EXIT GROUP GROUP SET SET CNTRL CNTRL STATUS STATUS OTHER OTHER 4 4 3 3 CANCEL CANCEL TEST TEST LAMP LAMP ZONE ZONE TARGET TARGET RESET RESET METER METER SELECT SELECT EVENTS EVENTS PROTECTION AND AUTOMATIO...

Page 50: ...ORT 2 EIA 232 PORT 2 EIA 232 9 9 2 2 6 6 N C N C RXD RXD N C N C TXD TXD IN208 IN208 IN207 IN207 4 4 3 3 CTS CTS RTS RTS CTS CTS 8 8 RTS RTS 7 7 PORT 3 and F EIA 232 PORT 3 and F EIA 232 N C OR 5Vdc N C OR 5Vdc 1 1 PIN PIN GND GND 9 9 PIN PIN 5 9 5 9 GND GND A A 8 8 7 7 1 1 PORT 2 PORT 2 SERIAL SERIAL PORT 3 PORT 3 1 1 U U S S IN IN SERIAL SERIAL D D A A M M E E i3087b Z12 Z12 OUT107 OUT107 Z03 Z0...

Page 51: ... 1 1 PORT PORT SERIAL SERIAL SERIAL SERIAL SERIAL SERIAL B31 B31 B25 B25 B26 B26 POWER POWER B27 B27 B28 B28 B30 B30 B29 B29 A25 A25 A26 A26 IN201 IN201 A27 A27 A28 A28 IN105 IN105 IN106 IN106 IN202 IN202 IN203 IN203 SHIELD SHIELD 1 1 3 3 2 2 5 5 4 4 TX TX TX TX RX RX RX RX PIN PIN 1 1 EIA 485 EIA 485 2 2 3 3 4 4 5 5 D A N G E R D A N G E R CONTACT WITH INSTRUMENT CONTACT WITH INSTRUMENT B33 B33 B...

Page 52: ...2 10 SEL 311C Relay Instruction Manual Date Code 20060320 Installation Front and Rear Panel Diagrams Figure 2 10 SEL 311C 2U Rear Panel Connectorized Drawing ...

Page 53: ...IN IN E E D A N G E R D A N G E R i3465a A25 A25 OUT212 OUT212 B24 B24 OUT103 OUT103 A06 A06 OUT203 OUT203 B05 B05 Z02 Z02 Z01 Z01 Z03 Z03 Z04 Z04 D A N G E R D A N G E R B02 B02 IA IA B01 B01 IB IB B04 B04 B03 B03 A03 A03 OUT102 OUT102 A01 A01 OUT201 OUT201 A02 A02 OUT101 OUT101 OUT202 OUT202 A04 A04 A05 A05 Z11 Z11 Z10 Z10 Z09 Z09 OUT207 OUT207 Z07 Z07 Z06 Z06 Z05 Z05 Z08 Z08 VA VA VB VB A10 A10...

Page 54: ...through these terminals to a fuse and to the switching power supply The control power circuitry is isolated from the relay chassis ground Refer to Section 1 Introduction Specifications for power supply ratings The relay power supply rating is listed on the serial number sticker on the relay rear panel Output Contacts Model 0311C00x Model 0311C00x can be ordered with standard output contacts only R...

Page 55: ...le part numbers indicate fast hybrid high current interrupting output contacts on the extra I O board OUT201 through OUT208 0311C01H2425451 Fast hybrid high current interrupting output contacts are not polarity dependent and may be used to switch either ac or dc loads Short transient inrush current may flow when a switch that is in series with the contact is closed and the contact is open This tra...

Page 56: ...als VA VB VC and VN Note also that VS NS is a separate single phase voltage input Wye Connected Voltages Any of the single phase voltage inputs i e VA N VB N VC N or VS NS can be connected to voltages up to 150 V continuous Figure 2 13 and Figure 2 14 show examples of wye connected voltages System frequency is determined from the voltages connected to terminals VA N Serial Ports All ports are inde...

Page 57: ...nput into Serial Port 2 on any of the SEL 311C models see Table 10 1 by connecting Serial Port 2 of the SEL 311C to an SEL 2020 with Cable C273A A demodulated IRIG B time code can also be input into the connector for Serial Port 1 see Table 10 2 If demodulated IRIG B time code is input into this connector it should not be input into Serial Port 2 and vice versa Table 2 1 Communications Cables to C...

Page 58: ...d Channel IP provides current for current polarized directional elements Figure 2 13 SEL 311C Provides Distance and Overcurrent Protection Reclosing and Synchronism Check for a Transmission Line OUT101 OUT102 OUT104 Forward Tripping Direction LINE Trip Circuit Failure Breaker 86 NS VS C B A N VA VB VC 52A Breaker Status ALARM IN101 IA IB IC IP SEL 311C RELAY CC Close Coil Lock Out 52B 86B Coil Tri...

Page 59: ...ontrol ground elements Figure 2 14 SEL 311C Provides Distance and Overcurrent Protection and Reclosing for a Transmission Line Current Polarization Source Connected to Channel IP OUT101 OUT102 OUT104 Forward Tripping Direction TRANSFORMER BANK LINE Comm Assisted Trip Scheme RX Trip Scheme Failure Breaker 86 TX NS VS C B A N VA VB VC 52A Breaker Status ALARM IN101 IN102 IA IB IC IP SEL 311C RELAY C...

Page 60: ... 311C Line Protection Through a Delta Wye Transformer Using Compensator Distance Elements 52 52 LINE TRANSFORMER BANK Forward Tripping Direction A B C SEL 311C Relay IA OUT101 OUT102 OUT103 OUT104 ALARM IN101 IN102 IB IC IP VS NS N VC VB VA Trip Circuit Close Circuit Breaker Failure Trip Circuit Comm Assisted Trip Scheme Comm Assisted Trip Scheme to Annunciator RTU or SEL Communications Processor ...

Page 61: ...a I O board requires removal of the main board first a Ribbon cables can be removed by pushing the extraction ears away from the connector b The 6 conductor power cable can be removed by grasping the power connector wires and pulling away from the circuit board Step 6 Grasp the drawout assembly of the board and pull the assembly from the relay chassis Step 7 Locate the jumper s or battery to be ch...

Page 62: ...MP29 JMP29 A A B B JMP28 JMP28 A A B B JMP27 JMP27 A A B B JMP26 JMP26 A A B B JMP25 JMP25 A A B B JMP24 JMP24 A A B B JMP22 JMP22 A A JMP21 JMP21 B B JMP23 JMP23 JMP1 JMP1 D D C C B B LCD CONTRAST ADJUST LCD CONTRAST ADJUST POWER I O POWER I O CONNECTOR CONNECTOR J10 J10 J8 J9 J8 J9 B1 B1 BATTERY BATTERY CLOCK CLOCK ANALOG ANALOG CONNECTOR CONNECTOR PUSHBUTTONS PUSHBUTTONS LEDs LEDs R131 R131 J7 ...

Page 63: ... B A A B B A A B B A A OPTOISOLATED INPUTS OPTOISOLATED INPUTS POWER I O CONNECTOR POWER I O CONNECTOR A A B B JMP17 JMP17 JMP19 JMP19 JMP18 JMP18 OUT211 OUT211 OUT212 OUT212 OUT210 OUT210 OUT209 OUT209 OUT208 OUT208 OUT207 OUT207 OUT206 OUT206 OUT205 OUT205 OUT204 OUT204 OUT203 OUT203 OUT202 OUT202 OUT201 OUT201 JMP20 JMP20 JMP21 JMP21 JMP22 JMP22 JMP23 JMP23 JMP24 JMP24 JMP25 JMP25 JMP26 JMP26 J...

Page 64: ...serted Contact closes when asserted Operation Solder Jumper Position K1 Only All Others Are Fixed as a Contacts A B Output Contacts 8 Optoisolated Inputs 8 JMP17 T2 CR1 Q1 T1 CR2 Q2 T4 CR3 Q3 T3 CR4 Q4 T6 CR5 T5 CR6 T8 CR7 T7 CR8 Q8 K2 K1 K4 K3 K6 K5 Q5 Q6 K7 K8 J4 Q7 R57 R58 R61 R62 R59 R60 R63 R64 R49 R50 R55 R56 R51 R52 R53 R54 B A Fast High Current Interrupting ...

Page 65: ...cts This is how these jumpers are configured in a standard relay shipment Refer to Figure 7 27 and Figure 7 28 for examples of output contact operation for different output contact types Extra Alarm Output Contact Control Jumper All the SEL 311C relays have dedicated alarm output contacts labeled ALARM see Figure 2 2 Figure 2 3 and Figure 2 8 Often more than one alarm output contact is needed for ...

Page 66: ...bit OUT107 Jumper JMP23 comes in this position in a standard relay ship ment see Figure 7 27 Extra Alarm output contact is operated by alarm logic circuitry Relay Word bit OUT107 does not have any effect on output contact OUT107 when jumper JMP23 is in this position see Figure 7 27 1 2 3 JMP23 1 2 3 JMP23 Table 2 4 Password and Breaker Jumper Operation Jumper Jumper Position Function Password JMP6...

Page 67: ...e battery is a 3 V lithium coin cell Ray O Vac No BR2335 or equivalent At room temperature 25 C the battery will nominally operate for 10 years with power removed from the relay If external power is lost or disconnected the battery powers the clock When the relay is powered from an external source the battery only experiences a low self discharge rate Thus battery life can extend well beyond the n...

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Page 69: ...EL 311C detect phase to phase phase to phase to ground and three phase faults Operating Principles of Phase Distance Elements A digital relay mho element tests the angle between a line drop compensated voltage and a polarizing reference voltage using the following concepts Sampled currents and voltages are represented in the relay as vectors by using the most recent sample as the real vector compo...

Page 70: ...e polarizing voltage for the positive sequence polarized mho element and Z I V is the line drop compensated voltage In the compensator distance phase to phase element the polarizing voltage is the unfaulted phase to phase voltage and the line drop compensated voltage is the faulted phase to phase voltage In the compensator distance three phase element the polarizing voltage is jVAB 0 25 VCmem and ...

Page 71: ... Positive Sequence Polarized Mho Element With Reach Equal to Line Impedance I X I R Vmem Z I V Restrain cos θ 0 Test Angle cos θ 0 Test Angle cos θ 0 Test Angle cos θ 0 Operate cos θ 0 Z I V I Zsource Balance cos 90 0 I X I R Vmem Z I V Z I V I Zsource I X I R Vmem Z I V Z I V I Zsource Forward External Fault Forward Fault at the Balance Point Forward Internal Fault ...

Page 72: ...ent voltages not system voltages Figure 3 2 Compensator Distance Phase to Phase Element Operation VB VB VB VB Unfaulted VA VA VA VA VC VC VC VC Fault Near Balance Point Forward External Fault Internal Fault V BC Z I BC V BC Z I BC V BC Z I BC V BC Z I BC VAB Z IAB VAB Z IAB VAB Z IAB VAB Z IAB Test Angle θ 180 sin θ 0 Test Angle θ 180 sin θ 0 Test Angle θ 180 sin θ 0 Test Angle θ 180 sin θ 0 ...

Page 73: ... transmission line through a delta wye transformer The compensator distance element reaches through a delta wye transformer bank for phase to phase phase to phase to ground and three phase faults Calculate the total primary impedance as the sum of the per unit transformer and line impedances then convert from per unit to actual primary impedance at the protected bus voltage The compensator distanc...

Page 74: ...at the same time The user selects compensator distance with a C suffix to the number of zones in the E21P setting e g 3C is three zones of compensator distance relaying Table 3 2 Distance Elements Settings Mho Phase Distance Elements Zones 1 4 Enable Setting E21P Setting range for Mho Phase Distance Elements Z1P Z4P OFF 0 05 to 64 Ω sec 0 01 Ω steps 5 A nominal OFF 0 25 to 320 Ω sec 0 01 Ω steps 1...

Page 75: ...5 e from Figure 3 18 r from Figure 3 23 t from Figure 4 2 y from Figure 4 1 u from Figure 3 15 Figure 3 4 Zone 1 AB Phase Distance Logic q 32QF w F32P Internal Element IAB 50PP1 Setting _ MAB1 Zone 1 Phase Distance Logic for AB Phase Pair BC and CA Logic Is Similar See Note 1 mAB Z1P X1 t CVTBL VPOLV y ILOP FSB FSA C in E21P M1P MBC1 MCA1 Relay Word Bits Relay Word Bits MABC1 MPP1 Relay Word Bits ...

Page 76: ...ure 3 23 t from Figure 4 1 Figure 3 5 Zone 2 AB Phase Distance Logic q 32QF w F32P Internal Element IAB 50PP2 Advanced Setting _ MAB2 Zone 2 Phase Distance Logic for AB Phase Pair BC and CA Logic Is Similar See Note 1 mAB Z2P VPOLV t ILOP FSB FSA C in E21P M2P MBC2 MCA2 Relay Word Bits Relay Word Bits MABC2 MPP2 Relay Word Bits unless noted e OSB2 a2 Setting r 50Q2 I2 I1 _ UBD 0 q 32QF w F32P Inte...

Page 77: ...4 AB Phase Distance Logic q 32QF w R32P Internal Element MABCn IAB 50PPn Advanced Setting C in E21P Setting t ILOP IBC ICA See Note 2 ABCn 0 Calc See Note 2 PPn 0 Calc MPPn _ _ _ w F32P Internal Element DIRn F Setting q 32QR DIRn F Setting VPOLV OSBn DIRn F Setting IAB 50PPn Advanced Setting mAB ZnP e OSBn a2 Setting r 50Qn VPOLV I2 I1 t ILOP FSB FSA _ _ UBD 0 Relay Word Bits Relay Word Bits MABn ...

Page 78: ...A nominal OFF 0 25 to 320 Ω sec 0 01 Ω steps 1 A nominal Settings range for Quadrilateral Resistance elements RG1 RG4 OFF 0 05 to 50 Ω sec 0 01 Ω steps 5 A nominal OFF 0 25 to 250 Ω sec 0 01 Ω steps 1 A nominal Minimum sensitivity is controlled by the pickup of the supervising phase and residual overcurrent elements for each zone Accuracy 5 of setting at line angle for 30 SIR 60 3 of setting at li...

Page 79: ...and set to I2 when EADVS N XGPOL I2 negative sequence current or I0 zero sequence current advanced setting Settings range for nonhomogeneous correction angle hidden and set to 3 when EADVS N TANG 40 to 40 degrees advanced setting a If EADVS N levels 2 4 fault detectors are set at their minimum values and are hidden Table 3 3 Ground Distance Elements Settings Sheet 2 of 2 Impedance Reach Zones 1 4 ...

Page 80: ...w from Figure 5 3 e from Figure 4 1 Figure 3 9 Zones 3 and 4 Mho Ground Distance Logic IA 50L2 Advanced Setting q 32GF _ _ IG 50GZ2 Advanced Setting See Note 1 mAG Z2MG FSA w 3PO e ILOP VPOLV Zone 2 A Phase Mho Ground Distance Logic B and C Phase Logic Is Similar Relay Word Bits unless noted MAG2 MBG2 MCG2 XAG2 XBG2 XCG2 Z2G Relay Word Bits Relay Word Bit DIRn F Setting q 32GF IA 50Ln Advanced Set...

Page 81: ...ne 1 Resistance Setting q From Figure 4 7 w from Figure 4 6 e from Figure 4 12 r from Figure 5 3 t from Figure 4 1 y from Figure 4 2 u from Figure 3 10 Figure 3 10 Zone 1 Quadrilateral Ground Distance Logic IA 50L1 Setting _ _ IG 50GZ1 Setting xAG XG1 X1 FSA r 3PO t ILOP VPOLV Zone 1 A Phase Quadrilateral Ground Distance Logic B and C Phase Logic Is Similar RG1 rAG RG1 w 32QGE e 32GF XGPOL I2 Adva...

Page 82: ...2 Zone 2 Resistance Setting q From Figure 4 7 w from Figure 4 6 e from Figure 4 12 r from Figure 5 3 t from Figure 4 1 Figure 3 11 Zone 2 Quadrilateral Ground Distance Logic IA 50L2 Advanced Setting _ _ IG 50GZ2 Advanced Setting xAG XG2 FSA Zone 2 A Phase Quadrilateral Ground Distance Logic B and C Phase Logic Is Similar RG2 rAG RG2 w 32QGE e 32GF XGPOL I2 Advanced Setting XGPOL IG Advanced Settin...

Page 83: ...e 4 7 w from Figure 4 6 e from Figure 4 12 r from Figure 5 3 t from Figure 4 1 Figure 3 12 Zones 3 and 4 Quadrilateral Ground Distance Logic IA 50Ln Advanced Setting _ _ IG 50GZn Advanced Setting xAG XGn FSA Zone 3 and 4 A Phase Quadrilateral Ground Distance Logic B and C Phase Logic Is Similar xAG XGn w 32QGE e 32GF XGPOL I2 Advanced Setting XGPOL IG Advanced Setting q 32VE XAGn w 32QE e 32GR XGP...

Page 84: ...e 3 14 show operating times for the SEL 311C distance elements The diagrams show operating times at each test point Operating times include output contact closure time For the distance element test a fault was applied at a location representing a percentage of the Zone 1 relay reach setting Tests were performed for source impedance ratios SIR of 0 1 1 0 10 0 and 30 0 No pre fault load current or f...

Page 85: ...perating Time in Cycles SEL 311C Quadrilateral Ground Operating Times Single Line to Ground Faults SIR 0 1 SIR 1 0 SIR 10 0 SIR 30 0 0 0 25 0 5 0 75 1 1 25 1 5 1 75 2 2 25 0 10 20 30 40 50 60 70 80 90 Fault Location in Percent of Set Reach Operating Time in Cycles SEL 311C Mho Ground Operating Times Single Line to Ground Faults SIR 0 1 SIR 1 0 SIR 10 0 SIR 30 0 0 0 25 0 5 0 75 1 1 25 1 5 1 75 2 0 ...

Page 86: ...20 30 40 50 60 70 80 90 100 Fault Location in Percent of Set Reach Trip Time in Cycles SEL 311C with Fast Hybrid Output Contacts Phase Mho Operating Times SIR 0 1 SIR 1 0 SIR 10 0 SIR 30 0 Fault Location in Percent of Set Reach Trip Time in Cycles SEL 311C with Fast Hybrid Output Contacts Ground Mho Operating Times SIR 0 1 SIR 1 0 SIR 10 0 SIR 30 0 0 0 25 0 5 0 75 1 1 25 1 5 1 75 2 2 25 0 10 20 30...

Page 87: ...ements by multiplier setting Z1EXTM once all three poles are closed for Z1EXTD time All Zone 1 reaches retreat to their set reach when 3PO asserts The Zone 1 reaches cannot be extended if any of the following elements are asserted M1P M2P Z1G Z2G 51G or 51Q q From Figure 3 26 w from Figure 3 25 e from Figure 3 4 r from Figure 3 7 t from Figure 3 5 y from Figure 3 8 u from Figure 5 3 i from Figure ...

Page 88: ...protection zone number in the appropriate SELOGIC trip equation TR M1P Z1G Z2T 51GT 51QT The timing of the common zone timer is frozen or suspended if the timer is timing and the timer input drops out The duration of the suspension is one cycle This feature prevents the timer resetting when a fault evolves e g phase phase to three phase phase ground to phase phase ground If the timer expires the s...

Page 89: ...m Figure 3 5 r from Figure 3 8 t from Figure 3 6 y from Figure 3 9 Figure 3 16 Zone Timing Elements SUSPEND TIMING Z2T r Z2G Zone 2 Delay Timer Logic M2PT Z2GT SUSPEND TIMING Z4T y Z4G Zone 4 Delay Timer Logic M4PT Z4GT t M4P e M2P Z2D 0 Z2PD 0 Z2GD 0 Z4D 0 Z4PD 0 Z4GD 0 Z1D 0 Z1PD 0 Z1GD 0 SUSPEND TIMING SUSPEND TIMING Z1T w Z1G Zone 1 Delay Timer Logic M1PT Z1GT q M1P Z3T y Z3G Zone 3 Delay Time...

Page 90: ...step logic The timer setting UBOSBD shown in Figure 3 17 is an adaptive setting calculated by the relay This adaptive setting which is the expected duration of the swing within the inner blinders is based on the actual time it takes for the swing to travel between the Zone 6 and Zone 5 blinders prior to moving into inner blinders If the swing stays between the inner blinders for a period longer th...

Page 91: ...ngle for 30 SIR 60 3 of setting at line angle for SIR 30 Transient Overreach 5 of setting plus steady state accuracy Positive Sequence Current Supervision Element 50ABC Setting Range for Positive Sequence Current Supervision 50ABCP 0 50 100 00 A secondary 0 01 A steps 5 A nominal 0 10 20 00 A secondary 0 01 A steps 1 A nominal Accuracy 0 05 A and 3 of setting 5 A nominal 0 01 A and 3 of setting 1 ...

Page 92: ...ion Logic OSB Out of step block OSB3 Block Zone 3 during an out of step condition OSTI Incoming out of step trip OSB4 Block Zone 4 during an out of step condition Table 3 7 OOS Relay Word Bits Sheet 2 of 2 Relay Word Bits Description Relay Word Bits Description I1 50ABCP Setting _ UBOSBD 0 UBOSB X5ABC X6ABC 50ABC Z1 V1 I1 Im Z1 Re Z1 V1 I1 q 3PO w ILOP X R Zone 6 X R Zone 5 X R 3f Unblock Internal...

Page 93: ...tep Characteristics q From Figure 3 17 w to Figure 3 4 e to Figure 3 5 r to Figure 3 6 Figure 3 18 Out of Step Logic OOSB4 Y Setting OOSB3 Y Setting OOSB2 Y Setting OOSB1 Y Setting EOOST O Setting q X5ABC EOOST I Setting EOOST N Setting X6ABC UBOSB OSBD 0 OSTD 0 2 sec 0 0 1 4 CYC OSB OSTI OST OSTO OSB1 w OSB2 e OSB3 r OSB4 r Relay Word Bits Reset q ...

Page 94: ...ugh 50P3P are compared to the magnitudes of the individual phase currents IA IB and IC The logic outputs in Figure 3 19 are Relay Word bits and operate as follows Level 1 example shown 50P1 1 logical 1 if at least one phase current exceeds the 50P1P setting 50P1 0 logical 0 if no phase current exceeds the 50P1P setting Ideally set 50P1P 50P2P 50P3P so that overcurrent elements will display in an o...

Page 95: ...7P1TC IN105 Input IN105 deasserted 67P1TC IN105 logical 0 Phase instantaneous definite time overcurrent elements 67P1 67P1T are defeated and nonoperational regardless of any other setting Input IN105 asserted 67P1TC IN105 logical 1 67P1 67P1T follows 50P1 67P1TC M2P 67P1 67P1T uses the Zone 2 mho phase distance element to provide forward directional control _ _ _ _ _ _ 50P1P Setting 50P2P Setting ...

Page 96: ...rcurrent elements are made directional with standard directional elements such as 32QF the pickup time curve in Figure 3 20 is adjusted as follows multiples of pickup setting 4 add 0 25 cycle multiples of pickup setting 4 add 0 50 cycle Figure 3 20 SEL 311C Nondirectional Instantaneous Overcurrent Element Pickup Time Curve Figure 3 21 SEL 311C Nondirectional Instantaneous Overcurrent Element Reset...

Page 97: ... selectable forward and reverse directional controls See Figure 4 12 for more information on directional control q From Figure 4 12 Figure 3 22 Levels 1 Through 4 Residual Ground Instantaneous Definite Time Overcurrent Elements With Directional and Torque Control _ 50G2 67G2 67G2T _ 50G1P Setting 3I0 50G1 67G1 67G1T 67G1TC SELOGIC 67G2D 0 q 32GF _ 50G4 67G4T 67G4 _ 50G3 67G3 67G3T 67G1D 0 DIR 3 F ...

Page 98: ... 120 for phase currents and substituting like settings and Relay Word bits In Figure 3 23 Levels 1 and 2 67Qn elements have directional controls fixed forward Levels 3 and 4 have selectable forward and reverse directional controls See Figure 4 14 for more information on this optional directional control Settings Range Description Pickup Settings 50G1P 50G4P OFF 0 25 100 00 A secondary 5 A nominal ...

Page 99: ...nge Description Pickup Settings 50Q1P 50Q4P OFF 0 25 100 00 A secondary 5 A nominal phase current inputs IA IB IC OFF 0 05 20 00 A secondary 1 A nominal phase current inputs IA IB IC Definite Time Settings 67Q1D 67Q4D 0 00 16000 00 cycles in 0 25 cycle steps Pickup 0 05 A secondary and 3 of setting 5 A nominal phase current inputs IA IB IC 0 01 A secondary and 3 of setting 1 A nominal phase curren...

Page 100: ...t Elements With Directional and Torque Control _ 50Q2 67Q2 67Q2T _ 50Q1P Setting 3I2 50Q1 67Q1 67Q1T 67Q1TC SELOGIC 67Q2D 0 q 32QF _ 50Q4 67Q4T 67Q4 _ 50Q3 67Q3 67Q3T 67Q1D 0 DIR 3 F Setting q 32QR 67Q3D 0 67Q4D 0 50Q2P Setting 67Q2TC SELOGIC 50Q3P Setting 67Q3TC SELOGIC 50Q4P Setting 67Q4TC SELOGIC Relay Word Bits unless noted q 32QF q 32QF DIR 4 F Setting q 32QR q 32QF Relay Word Bits Level 1 E5...

Page 101: ...ting Current See Figure 51PT E51P Y IABC maximum of A B and C phase currents Figure 3 24 Table 3 9 Phase Time Overcurrent Element Maximum Phase Settings Setting Definition Range 51PP pickup OFF 0 25 16 00 A secondary 5 A nominal phase current inputs IA IB IC OFF 0 05 3 20 A secondary 1 A nominal phase current inputs IA IB IC 51PC curve type U1 U5 U S curves see Figure 9 1 Figure 9 10 C1 C5 I E C c...

Page 102: ...1PRS Electromechanical Reset Y N Pickup Curve Timeout Reset 51P 51PR 51PT Torque Control 51PTC State Switch Position Logical 1 Closed Logical 0 Open Logic Point 51PTC Controls the Torque Control Switch Setting 51PRS Reset Timing Y Electromechanical N 1 Cycle Relay Word Bits SELOGIC Setting Pickup 0 05 A secondary and 3 of setting 5 A nominal phase current inputs IA IB IC 0 01 A secondary and 3 of ...

Page 103: ...ion torque control setting 51PTC for phase time overcurrent element 51PT 51PTC 1 Setting 51PTC set directly to logical 1 The Torque Control Switch closes and phase time overcurrent element 51PT is enabled and nondirectional 51PTC IN105 Input IN105 deasserted 51PTC IN105 logical 0 The Torque Control Switch opens and phase time overcurrent element 51PT is defeated and nonoperational regardless of an...

Page 104: ...ical reset timing setting 51PRS Y the phase time overcurrent element reset timing emulates electromechanical reset timing If maximum phase current IABC goes above pickup setting 51PP element is timing or already timed out and then current IABC goes below 51PP the element starts to time to reset emulating electromechanical reset timing Relay Word bit 51PR resetting indication logical 1 when the ele...

Page 105: ...ts SELOGIC Setting Table 3 11 Residual Ground Time Overcurrent Element Settings Setting Definition Range 51GP pickup OFF 0 25 16 00 A secondary 5 A nominal phase current inputs IA IB IC OFF 0 05 3 20 A secondary 1 A nominal phase current inputs IA IB IC 51GC curve type U1 U5 U S curves see Figure 9 1 Figure 9 10 C1 C5 I E C curves 51GTD time dial 0 50 15 00 U S curves see Figure 9 1 Figure 9 10 0 ...

Page 106: ...ment Curve Timing and Reset Timing Settings 51QP Pickup 51QC Curve Type 51QTD Time Dial 51QRS Electromechanical Reset Y N Pickup Curve Timeout Reset 51Q 51QR 51QT Torque Control 51QTC State Switch Position Logical 1 Closed Logical 0 Open Logic Point 51QTC Controls the Torque Control Switch Setting 51QRS Reset Timing Y Electromechanical N 1 Cycle Relay Word Bits SELOGIC Setting Table 3 12 Negative ...

Page 107: ... Frequency Elements Time Overcurrent Elements Accuracy Pickup 0 05 A secondary and 3 of setting 5 A nominal phase current inputs IA IB IC 0 01 A secondary and 3 of setting 1 A nominal phase current inputs IA IB IC Curve Timing 1 50 cycles and 4 of curve time for currents between and including 2 and 30 multiples of pickup ...

Page 108: ...311C rear panel voltage input VC VAB Calculated phase to phase voltage VBC Calculated phase to phase voltage VCA Calculated phase to phase voltage 3V0 Residual voltage VA VB VC V2 Negative sequence voltage V1 Positive sequence voltage VS Synchronism check voltage from SEL 311C rear panel voltage input VSa a Voltage VS is used in the synchronism check elements described in Synchronism Check Element...

Page 109: ...FF 0 00 150 00 V secondary 59N2 3V0 VA VB VC 59N2P OFF 0 00 150 00 V secondary 59Q V2 1 3 VA a2VB aVC 59QP OFF 0 00 100 00 V secondary 59V1 V1 1 3 VA aVB a2VC 59V1P OFF 0 00 150 00 V secondary 27S VS 27SP OFF 0 00 150 00 V secondary Figure 3 29 59S VS 59SP OFF 0 00 150 00 V secondary Table 3 14 Voltage Elements Settings and Settings Ranges Sheet 2 of 2 Voltage Element Relay Word Bits Operating Vol...

Page 110: ...perating voltage goes below the corresponding pickup setting Overvoltage elements Device 59 assert when the operating voltage goes above the corresponding pickup setting EXAMPLE 3 1 Undervoltage Element Operation Refer to Figure 3 27 top of the figure Pickup setting 27P is compared to the magnitudes of the individual phase voltages VA VB and VC The logic outputs in Figure 3 27 are the following Re...

Page 111: ...erted e g 27A 0 EXAMPLE 3 2 Overvoltage Element Operation Refer to Figure 3 27 bottom of the figure Pickup setting 59P is compared to the magnitudes of the individual phase voltages VA VB and VC The logic outputs in Figure 3 27 are the following Relay Word bits 59A 1 logical 1 if VA pickup setting 59P 59A 0 logical 0 if VA pickup setting 59P 59B 1 logical 1 if VB pickup setting 59P 59B 0 logical 0...

Page 112: ...ility of a high slip frequency exercise caution if synchronism check elements 25A1 or 25A2 are used to close a circuit breaker A high slip frequency and a slow breaker close could result in closing the breaker outside the synchronism check window Qualify the breaker close command with a time delay such as SV1 25A1 CL CC SV1T Set SV1PU with enough pickup delay to ensure that the slip frequency is l...

Page 113: ...5VHI high voltage threshold for healthy voltage window 0 00 150 00 V secondary 25SF maximum slip frequency 0 005 0 500 Hz 25ANG1 synchronism check element 25A1 maximum angle 0 80 25ANG2 synchronism check element 25A2 maximum angle 0 80 SYNCP synchronizing phase VA VB VC VAB VBC or VCA TCLOSD breaker close time for angle compensation OFF 1 00 60 00 cycles BSYNCH SELOGIC control equation that blocks...

Page 114: ...high threshold low threshold high threshold VS within healthy voltage window voltage window to Angle Difference Calculator see q absolute value Setting SELOGIC Setting VP within healthy Max Slip Freq Block Synchronism Check Slip Frequency Slip Frequency Element CYC 3 0 BSYNCH Bits Word Relay Setting 25SF VS VP SF 59VS 59VP 25VHI Calculator Frequency Slip Enable 25VLO Setting voltage window VA with...

Page 115: ... 005 Hz Operation of Synchronism Check Elements if voltages VP and VS are static not slipping 25A1 25A2 Synchronism Check Element 2 Synchronism Check Element 1 Enable Angle Difference Calculator Slip Frequency Element Max Angle 2 Max Angle 1 SF VP VS 25ANG2 25ANG1 or VAB VBC VCA select from VA VB VC absolute value Synchronize at Angle Difference 0 absolute value compensated by setting TCLOSD Last ...

Page 116: ... 30 and Figure 3 31 Voltage Window Refer to Figure 3 30 Single phase voltage inputs VP and VS are compared to a voltage window to verify that the voltages are healthy and lie within settable voltage limits 25VLO and 25VHI If both voltages are within the voltage window the following Relay Word bits assert 59VP indicates that voltage VP is within voltage window setting limits 25VLO and 25VHI 59VS in...

Page 117: ... BSYNCH TRIP Slip Frequency Calculator Refer to Figure 3 30 The synchronism check element Slip Frequency Calculator in Figure 3 30 runs if voltages VP VS and VA are healthy 59VP 59VS and 59VA asserted to logical 1 and the SELOGIC control equation setting BSYNCH Block Synchronism Check is deasserted logical 0 The Slip Frequency Calculator output is Slip Frequency fP fS in units of Hz slip cycles se...

Page 118: ...ce Calculator in Figure 3 31 runs if the slip frequency is less than the maximum slip frequency setting 25SF Relay Word bit SF is asserted Voltages VP and VS Are Static Refer to top of Figure 3 31 If the slip frequency is less than or equal to 0 005 Hz or TCLOSD OFF the Angle Difference Calculator does not take into account breaker close time it presumes voltages VP and VS are static not slipping ...

Page 119: ... with breaker close time setting TCLOSD set in cycles see Figure 3 32 The Angle Difference Calculator calculates the Angle Difference between voltages VP and VS compensated with the breaker close time Angle Difference VP VS fP fS TCLOSD 1 second 60 cycles 360 slip cycle Angle Difference Decreasing VS Approaching VP Angle Difference Increasing VS Moving Away From VP Angle Difference Angle Differenc...

Page 120: ...t breaker main contacts finally close VS is in phase with VP minimizing system shock The bottom of Figure 3 32 shows the Angle Difference increasing VS is moving away from VP Ideally circuit breaker closing is initiated when VS is in phase with VP Angle Difference 0 degrees When the circuit breaker main contacts finally close VS is in phase with VP But in this case VS has already moved past VP In ...

Page 121: ...ain in phase with VP Angle Difference 0 degrees There might not be enough time to wait for this to happen Thus the Angle Difference 0 degrees restriction is eased for this scenario 3 Refer to Reclose Supervision Logic on page 6 5 Refer to the bottom of Figure 6 2 If timer 79CLSD is set greater than zero e g 79CLSD 60 00 cycles and it times out without SELOGIC control equation setting 79CLS Reclose...

Page 122: ...nterval time out to propagate on to the close logic in Figure 6 1 Element 25A2 operates similarly Synchronism Check Applications for Automatic Reclosing and Manual Closing Refer to Close Logic on page 6 2 and Reclose Supervision Logic on page 6 5 For example set 25ANG1 15 degrees and use the resultant synchronism check element in the reclosing relay logic to supervise automatic reclosing e g 79CLS...

Page 123: ...d number of frequency elements are enabled with the E81 enable setting E81 N none 1 through 6 as shown in Figure 3 34 Frequency is determined from the voltage connected to voltage terminals VA N VS and positive sequence current Frequency Element Settings q To Figure 3 34 Figure 3 33 Undervoltage Block for Frequency Elements 0 30 CYC 27B81P Setting Va Vb Vc Voltages Wye Delta to Frequency Element L...

Page 124: ...quency Overfrequency Underfrequency Overfrequency Underfrequency Overfrequency Underfrequency 81D2 81D2T 0 81D3 81D3T 0 81D4 81D4T 0 27B81 Relay Word Bits 81D1 Relay Word Bits Enabled Frequency Elements 81D1P Settings in Hz Frequency Element 2 Setting E81 2 81D2P NFREQ 81D2P NFREQ 81D2P Frequency Element 3 Setting E81 3 81D3P NFREQ 81D3P NFREQ 81D3P Frequency Element 4 Setting E81 4 81D4P NFREQ 81...

Page 125: ...ttings and Settings Ranges Setting Definition Range 27B81P undervoltage frequency element block 20 00 150 00 V secondary wye connected voltages 150 V voltage inputs 81D1P frequency element 1 pickup OFF 40 10 65 00 Hz 81D1D frequency element 1 time delay 2 00 16000 00 cycles in 0 25 cycle steps 81D2P frequency element 2 pickup OFF 40 10 65 00 Hz 81D2D frequency element 2 time delay 2 00 16000 00 cy...

Page 126: ...uts 81D1 logical 1 instantaneous element 81D1T logical 1 time delayed element Relay Word bit 81D1T asserts to logical 1 only after time delay 81D1D Underfrequency Element Operation With the previous underfrequency element example settings if system frequency is less than or equal to 59 65 Hz 81D2P 59 65 Hz frequency element 2 outputs 81D2 logical 1 instantaneous element 81D2T logical 1 time delaye...

Page 127: ... being used Relay Word bit 27B81 can still be used in other logic with voltage setting 27B81P set as desired Enable the frequency elements setting E81 1 and make setting 27B81P Apply Relay Word bit 27B81 in a desired logic scheme using SELOGIC control equations Even though frequency elements are enabled the frequency element outputs Relay Word bits 81D1T 81D6T do not have to be used Frequency Elem...

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Page 129: ...Word bit LOP logical 1 when a 10 percent drop in V1 is detected with no corresponding change in I1 or I0 If the LOP condition persists for 60 cycles it latches in LOP resets Relay Word bit LOP logical 0 when all three of the phase voltages return above 40 V secondary V0 is less than 5 V secondary and V2 is less than 15 percent of V1 3PO three pole open condition indicates circuit breaker open cond...

Page 130: ...V1T from the expression The alarm will assert whenever the line is de energized and will clear when the circuit breaker is closed if system voltage is normal If the output is asserted when the circuit breaker is closed check the relay input potentials Setting ELOP Yor Y1 If setting ELOP Y or Y1 and a loss of potential condition occurs Relay Word bit LOP asserts to logical 1 negative sequence volta...

Page 131: ...ntial Logic Setting ELOP N If setting ELOP N the loss of potential logic still operates Relay Word bit LOP asserts to logical 1 for a loss of potential condition but does not disable any voltage polarized directional elements or any distance elements as occurs with ELOP Y or Y1 nor does it enable overcurrent elements set direction forward as occurs with ELOP Y ...

Page 132: ...he tripping delay caused by low voltage and low current Distance elements operate without significant delay for close in faults Consider using CCVT transient detection logic when you have either of the following conditions CCVTs with active ferroresonance suppression circuits AFSC The possibility of a source to line impedance ratio SIR greater than 5 CCVT transients may be aggravated when you have...

Page 133: ... not operate without directional control Set ZLOAD in the phase overcurrent torque control equation to block phase overcurrent operation q To Figure 4 15 Figure 4 3 Load Encroachment Logic With Example Settings A positive sequence impedance calculation Z1 is made in the load encroachment logic in Figure 4 3 Load is largely a balanced condition so apparent positive sequence impedance is a good load...

Page 134: ...Loads to Equivalent Secondary Impedances Step 1 Start with maximum forward load a 800 MVA 1 3 267 MVA per phase b 230 kV 1 3 132 8 kV line to neutral c 267 MVA 1 132 8 kV 1000 kV MV 2010 A primary d 2010 A primary 1 CT ratio 2010 A primary 1 A secondary 400 A primary 5 03 A secondary e 132 8 kV 1000 V kV 132800 V primary Table 4 1 Load Encroachment Logic Settings Ranges Setting Description and Ran...

Page 135: ...maximum forward load 230 2 400 800 2000 13 2 Ω secondary Step 3 To provide a margin for setting ZLF multiply by a factor of 0 9 a ZLF 13 2 Ω secondary 0 9 11 90 Ω secondary Step 4 For the maximum reverse load a 230 2 400 500 2000 21 1 Ω secondary Again to provide a margin for setting ZLR b ZLR 21 1 Ω secondary 0 9 19 00 Ω secondary Convert Power Factors to Equivalent Load Angles The power factor f...

Page 136: ...ent element 51PT from operating for high load conditions make the following SELOGIC control equation torque control setting 51PTC ZLOAD For a load condition ZLOAD logical 1 phase time overcurrent element 51PT cannot operate with this torque control setting regardless of the phase current level 51PTC logical 1 NOT logical 1 logical 0 For a fault condition ZLOAD logical 0 phase time overcurrent elem...

Page 137: ... 5 gives an overview of how these directional elements are enabled and routed to control the ground distance and residual ground overcurrent elements Note in Figure 4 5 that setting ORDER enables the directional elements Set ORDER with any combination of Q V and I Setting choices Q V and I correspond to directional elements as follows Q Negative sequence voltage polarized directional element V Zer...

Page 138: ...ment should be enabled to operate The ground distance and residual ground overcurrent elements set for directional control are then controlled by this directional element Directional Elements Refer to Figure 4 5 Figure 4 9 Figure 4 10 and Figure 4 11 The enable output of Best Choice Ground Directional logic in Figure 4 8 determines which directional element will run Additionally note that if enabl...

Page 139: ...a loss of potential condition As detailed in Figure 4 9 and Figure 4 10 voltage based directional elements are disabled during a loss of potential condition Thus the overcurrent elements that are directionally controlled by these voltage based directional elements are disabled also But this disable condition is overridden if setting ELOP Y Refer to Figure 4 1 and accompanying text for more informa...

Page 140: ...re 4 10 w to Figure 4 11 e to Figure 4 6 r to Figure 4 8 Figure 4 7 Internal Enables 32VE and 32IE Logic for Zero Sequence Voltage Polarized and Channel IP Current Polarized Directional Elements 32IE 32VE e and r w q q and w 50GF 50GR 50GRP IG 3I0 50GFP Setting Relay Word Bits Settings a0 I1 IG 3 IG residual INOM 0 05 IP E32IV V listed in setting ORDER I listed in setting ORDER SELOGIC Setting SEL...

Page 141: ...on 2 internal enable asserted position 3 internal enable asserted ORDER 1 2 3 N Y N Y N N Y N Y Y no ground directional element enabled ORDER 1 1 2 or 1 2 3 where any combination of Q V and I is set in positions 1 2 or 3 for ground directional element priority Q 32QGE V 32VE I 32IE Best Choice Ground Directional enable output Enable ground directional element that corresponds to position 1 interna...

Page 142: ...Distance and Residual Ground Overcurrent Elements I2 V2 If Z2F Setting 0 Forward Threshold 1 25 Z2F 0 25 I2 V2 If Z2F Setting 0 Forward Threshold 0 75 Z2F 0 25 Forward Threshold I2 V2 If Z2R Setting 0 Reverse Threshold 1 25 Z2R 0 25 I2 V2 If Z2R Setting 0 Reverse Threshold 0 75 Z2R 0 25 Reverse Threshold Direction Element Characteristics R2 X2 Forward Threshold Reverse Threshold Z2 PLANE enable ou...

Page 143: ...d Residual Ground Overcurrent Elements I0 V0 If Z0F Setting 0 Forward Threshold 1 25 Z0F 0 25 I0 V0 If Z0F Setting 0 Forward Threshold 0 75 Z0F 0 25 Forward Threshold I0 V0 If Z0R Setting 0 Reverse Threshold 1 25 Z0R 0 25 I0 V0 If Z0R Setting 0 Reverse Threshold 0 75 Z0R 0 25 Reverse Threshold Direction Element Characteristics R0 X0 Forward Threshold Reverse Threshold Z0 PLANE enable output r R32V...

Page 144: ...ure 4 11 y to Figure 3 7 Figure 3 12 and Figure 3 22 Figure 4 12 Ground Distance and Residual Ground Directional Logic Forward Threshold Channel IP Nominal Rating Phase Channels Nominal Rating 0 05 2 Forward Threshold Reverse Threshold Channel IP Nominal Rating Phase Channels Nominal Rating 0 05 2 Reverse Threshold enable output e R32I Reverse F32I Forward Best Choice Ground Directional Logic q 50...

Page 145: ...Negative Sequence Phase Overcurrent and Phase Distance Elements Internal Enables Refer to Figure 4 6 and Figure 4 13 The Relay Word bit 32QE enables the negative sequence voltage polarized directional element The settings involved with 32QE in Figure 4 6 e g setting a2 are explained in Directional Control Settings on page 4 21 Directional Elements Refer to Figure 4 13 Figure 4 14 and Figure 4 15 I...

Page 146: ...it 32QR logic points Loss of Potential Note if both the following are true Enable setting ELOP Y A loss of potential condition occurs Relay Word bit LOP asserts then the forward logic points Relay Word bit 32QF assert to logical 1 thus enabling elements that are set direction forward These direction forward elements effectively become nondirectional and provide protection during a loss of potentia...

Page 147: ...0 Forward Threshold 1 25 Z2F 0 25 I2 V2 If Z2F Setting 0 Forward Threshold 0 75 Z2F 0 25 Forward Threshold I2 V2 If Z2R Setting 0 Reverse Threshold 1 25 Z2R 0 25 I2 V2 If Z2R Setting 0 Reverse Threshold 0 75 Z2R 0 25 Reverse Threshold Direction Element Characteristics R2 X2 Forward Threshold Reverse Threshold Z2 PLANE 32QR Reverse R32Q Reverse 32QF Forward F32Q Forward 50QF Enable Forward Threshol...

Page 148: ...s q From Figure 4 3 w from Figure 4 1 e to Figure 3 4 Figure 3 5 and Figure 3 6 Figure 4 15 Positive Sequence Voltage Polarized Directional Element for Phase Distance Elements 0 1 INOM IA IB IB IC IC IA q ZLOAD w ILOP VPOLV F32P Forward R32P Reverse All Phase Phase Distance Elements Forward All Phase Phase Distance Elements Reverse e Load Condition Pos Seq Polarizing Voltage Present Relay Word Bit...

Page 149: ...t automatically if setting E32 AUTO They have to be set by the user whether setting E32 AUTO or Y These settings are DIR3 DIR4 ORDER and E32IV All these settings are explained in detail in the remainder of this subsection Settings Zone 1 Level 1 and Zone 2 Level 2 elements except 67P1 and 67P2 are fixed forward and may not be changed by the user DIR3 Zone 3 Level 3 Element Direction Setting DIR4 Z...

Page 150: ...nt operating quantity as indicated by its internal enable 32QGE not being asserted then the second listed directional element V zero sequence voltage polarized directional element see Figure 4 10 provides directional control for the ground distance and residual ground overcurrent elements Another example if setting ORDER V then the zero sequence voltage polarized directional element V zero sequenc...

Page 151: ...e sequence line impedance magnitude setting Z1MAG as follows Z2F Z1MAG 2 Ω secondary Z2R Z1MAG 2 0 1 Ω secondary 5 A nominal Z2R Z1MAG 2 0 5 Ω secondary 1 A nominal 50QFP Forward Directional Negative Sequence Current Pickup 50QRP Reverse Directional Negative Sequence Current Pickup Setting Range 0 25 5 00 A secondary 5 A nominal phase current inputs IA IB IC 0 05 1 00 A secondary 1 A nominal phase...

Page 152: ...g a2 is set automatically at a2 0 1 For setting a2 0 1 the negative sequence current I2 magnitude has to be greater than 1 10 of the positive sequence current I1 magnitude in order for the negative sequence voltage polarized directional elements to be enabled I2 0 1 I1 k2 Zero Sequence Current Restraint Factor I2 I0 Setting Range 0 10 1 20 unitless Note the directional enable logic outputs in Figu...

Page 153: ...uence voltage polarized directional elements to be enabled I2 0 2 I0 Again this presumes at least one of the enables 32VE or 32IE is asserted 50GFP Forward Directional Residual Ground Current Pickup 50GRP Reverse Directional Residual Ground Current Pickup Setting Range 0 25 5 00 A secondary 5 A nominal phase current inputs IA IB IC 0 05 1 00 A secondary 1 A nominal phase current inputs IA IB IC If...

Page 154: ...ed and channel IP current polarized directional elements It keeps the elements from operating for zero sequence current system unbalance which circulates due to line asymmetries CT saturation during three phase faults etc a0 Set Automatically If configuration setting E32 AUTO setting a0 is set automatically at a0 0 1 For setting a0 0 1 the zero sequence current I0 magnitude has to be greater than ...

Page 155: ...trol Equation Enable Refer to Figure 4 7 SELOGIC control equation setting E32IV must be asserted to logical 1 to enable the zero sequence voltage polarized and channel IP current polarized directional elements for directional control of ground distance and residual ground overcurrent elements Most often this setting is set directly to logical 1 E32IV 1 numeral 1 For situations where zero sequence ...

Page 156: ... element asserts forward The default settings for all torque control equations is logic 1 or enabled Torque control equations may not be set directly to logic 0 Table 4 4 Torque Control Settings and Elements Torque Control Setting Controlled Element Directional and Additional Control Settings 67P1TC 67P1 67P1T Torque Control 67P2TC 67P2 67P2T Torque Control 67P3TC 67P3 67P3T Torque Control 67G1TC ...

Page 157: ...l illuminates when DTT asserts to logical 1 see COMM Target LED on page 5 32 Typical settings for DTT are DTT IN106 or DTT RMB1A where input IN106 is connected to the output of direct transfer trip communications equipment or receive MIRRORED BIT RMB1A is asserted by the transfer trip condition in a remote SEL relay Setting DTT is also used for Direct Underreaching Transfer Trip DUTT schemes TRSOT...

Page 158: ...LTR Unlatch Trip Conditions TDURD Minimum Trip Duration Time This timer establishes the minimum time duration for which the TRIP Relay Word bit asserts The settable range for this timer is 2 16 000 cycles See Figure 5 2 Trip Seal in and Unlatch Logic Other Trips Trip Logic t Switch Onto Fault Trip Logic Communications Assisted Trip Logic Communications Assisted Trip Unlatch Trip ULTR Other Trips T...

Page 159: ...is logical 1 beyond the TDURD time Relay Word bit TRIP remains asserted at logical 1 for as long as the output of OR 1 gate remains at logical 1 regardless of other trip logic conditions The Minimum Trip Duration Timer can be set no less than four cycles Figure 5 2 Minimum Trip Duration Timer Operation See Bottom of Figure 5 1 The OPEN command is included in the trip logic in the factory settings ...

Page 160: ... port The front panel TARGET RESET pushbutton and the TAR R Target Reset serial port command are primarily used during testing Use these to force the TRIP Relay Word bit to logical 0 if test conditions are such that setting ULTR does not assert to logical 1 to automatically deassert the TRIP Relay Word bit Other Applications for the Target Reset Function Note that the combination of the TARGET RES...

Page 161: ...ion setting TR it remains asserted at logical 1 for a minimum of 9 cycles Unlatch Trip In SELOGIC control equation setting ULTR 50L 51G Both elements must be deasserted before the trip logic unlatches and the TRIP Relay Word bit deasserts to logical 0 Additional Settings Examples The factory setting for SELOGIC control equation setting ULTR is a trip element unlatch condition A circuit breaker sta...

Page 162: ... the resultant of the trip logic in Figure 5 1 is routed to output contacts OUT101 and OUT102 with the following SELOGIC control equation settings OUT101 TRIP OUT102 TRIP If more than two TRIP output contacts are needed program other output contacts with the TRIP Relay Word bit Examples of uses for additional TRIP output contacts Keying an external breaker failure relay Keying communications equip...

Page 163: ... The SOTF trip logic permits tripping if both the following occur An element asserts in SELOGIC control equation trip setting TRSOTF Relay Word bit SOTFE is asserted to logical 1 Relay Word bit SOTFE the output of the SOTF logic provides the effective time window for an element in trip setting TRSOTF e g TRSOTF 50P2 to trip after the circuit breaker closes Figure 5 3 and the following discussion d...

Page 164: ... level 50L When the circuit breaker is closed 3PO logical 0 circuit breaker closed Determining Three Pole Open Condition Without Circuit Breaker Auxiliary Contact OPO 52 If a circuit breaker auxiliary contact is not connected to the SEL 311C and OPO 52 SELOGIC control equation setting 52A may be set 52A 0 numeral 0 With SELOGIC control equation setting 52A continually at logical 0 3PO logic is con...

Page 165: ...input IN105 is energized close bus is energized the circuit breaker is still open so the output of the CLOEND timer continues to be asserted to logical 1 Thus the ANDed combination of these conditions latches in the SOTFD timer The SOTFD timer outputs a logical 1 for a time duration of SOTFD cycles any time it sees a rising edge on its input logical 0 to logical 1 transition if it is not already t...

Page 166: ...Trip PUTT Directional Comparison Unblocking DCUB Directional Comparison Blocking DCB Enable Setting ECOMM The POTT PUTT DCUB and DCB tripping schemes are enabled with enable setting ECOMM Setting choices are ECOMM N no communications assisted trip scheme enabled ECOMM POTT POTT or PUTT scheme ECOMM DCUB1 DCUB scheme for two terminal line communications from one remote terminal ECOMM DCUB2 DCUB sch...

Page 167: ...ts that are supervised by the communications assisted trip logic see top half of Figure 5 1 Setting TRCOMM is typically set with Zone 2 overreaching distance elements fixed direction forward M2P Zone 2 phase distance instantaneous element Z2G Zone 2 ground distance instantaneous element The exception is a DCB scheme where Zone 2 overreaching distance elements set direction forward with a short del...

Page 168: ...SEL 311C are available as Relay Word bits used in SELOGIC control equations The following optoisolated input setting example is for a Permissive Overreaching Transfer Trip POTT scheme In the above SEL 311C setting example Relay Word bit IN102 is set in the PT1 SELOGIC control equation Optoisolated input IN102 is wired to a communications equipment receiver output contact Relay Word bit IN102 can a...

Page 169: ...ion guide AG95 29 to help set up the SEL 311C in a POTT scheme see Communications Assisted Trip Logic General Overview on page 5 10 for more setting comparison information on the SEL 321 SEL 311C relays External Inputs See Optoisolated Inputs on page 7 3 for more information on optoisolated inputs PT1 Received Permissive Trip Signal s In two terminal line POTT applications a permissive trip signal...

Page 170: ... trip setting TRCOMM typically set at 10 cycles Set to OFF to defeat EBLKD ETDPU Echo Time Delay Pickup Sets minimum time requirement for received PT before echo begins typically set at 2 cycles Set to OFF for no echo EDURD Echo Duration Limits echo duration to prevent channel lockup typically set at 4 0 cycles Logic Outputs The following logic outputs can be tested by assigning them to output con...

Page 171: ... rapid tripping of both line terminals for internal faults near the weak terminal The strong terminal is permitted to trip via the permissive signal echoed back from the weak terminal The weak infeed logic generates a trip at the weak terminal if all of the following are true A permissive trip PT signal is received for ETDPU time A phase undervoltage or residual overvoltage element is picked up No...

Page 172: ...3 23 y from Figure 5 3 u from Figure 5 5 i from Figure 5 1 o Figure 5 1 Figure 5 6 POTT Logic TRCOMM Setting ELOP Y1 Setting q LOP w M3P e Z3G r 67G3 t 67Q3 y 3PO EBLKD OFF Setting OPO 27 Setting ETDPU OFF Setting u PT i TRIP EWFC Y Setting VAB VBC VCA 27PPW Setting 3V0 59NW Setting 0 EBLKD 0 0 1 4 CYC 1 4 CYC 0 Z3RBD 0 0 ETDPU 0 EDURD Reset _ _ _ _ WFC ECTT To Trip Logic o EKEY KEY To Trip Logic ...

Page 173: ...nstantaneous overcurrent element instead of with element KEY see Figure 5 8 OUT105 M1P Z1G 67G1 67Q1 Note only use enabled elements If echo keying is desired add the echo key permissive trip logic output as follows OUT105 M1P Z1G 67G1 67Q1 EKEY In a three terminal line scheme another output contact e g OUT107 is set the same as OUT105 see Figure 5 9 Installation Variations Figure 5 9 shows output ...

Page 174: ...r a Two Terminal Line POTT Scheme Figure 5 9 SEL 311C Connections to Communications Equipment for a Three Terminal Line POTT Scheme to from remote terminal OUT105 OUT105 KEY TX RX RX TX PT1 IN104 SEL 311C partial IN104 to from remote terminal 1 OUT105 OUT105 KEY OUT107 KEY TX OUT107 RX RX TX to from remote terminal 2 RX TX PT1 IN104 IN106 SEL 311C partial TX IN104 RX IN106 ...

Page 175: ...ng comparison information on the SEL 321 SEL 311C relays External Inputs See Optoisolated Inputs on page 7 3 for more information on optoisolated inputs PT1 PT2 Received Permissive Trip Signal s In two terminal line DCUB applications setting ECOMM DCUB1 a permissive trip signal is received from one remote terminal One optoisolated input on the SEL 311C e g input IN104 is driven by a communications...

Page 176: ...on 9 Setting the Relay for setting ranges GARD1D Guard Present Delay Sets minimum time requirement for reinstating permissive tripping following a loss of channel condition typically set at 10 cycles Channel 1 and 2 logic use separate timers but have this same delay setting UBDURD DCUB Disable Delay Prevents tripping by POTT logic after a settable time following a loss of channel condition typical...

Page 177: ...rison Unblocking Logic The UBB1 and UBB2 are routed in various combinations in Figure 5 11 to control Relay Word bit UBB depending on enable setting ECOMM DCUB1 or DCUB2 Relay Word bit UBB is the unblock block input into the trip logic in Figure 5 1 When UBB asserts to logical 1 tripping is blocked ...

Page 178: ...LOG2 PT2 Loss of Guard Input Permissive Trip Input Z3RB from POTT logic Logic enabled if setting ECOMM DCUB2 Logic enabled if setting ECOMM DCUB1 or ECOMM DCUB2 PTRX2 w Loss of Channel UBEND 0 UBDURD 0 0 GARD1D Relay Word Bit Relay Word Bits SEL OGIC Settings UBB1 q LOG1 PT1 Loss of Guard Input Permissive Trip Input PTRX1 w Loss of Channel UBEND 0 UBDURD 0 0 GARD1D SEL OGIC Settings ...

Page 179: ...OMM DCUB1 or DCUB2 Relay Word bit PTRX is the permissive trip receive input into the trip logic in Figure 5 1 Installation Variations Figure 5 13 shows output contacts OUT105 and OUT107 connected to separate communications equipment for the two remote terminals Both output contacts are programmed the same OUT105 KEY and OUT107 KEY Depending on the installation perhaps one output contact e g OUT105...

Page 180: ...3 SEL 311C Connections to Communications Equipment for a Three Terminal Line DCUB Scheme Setting ECOMM DCUB2 IN104 IN105 IN106 IN207 OUT105 TRIP RX OUT107 SEL 311C partial TX RX to from remote terminal 1 RX TX GUARD RX TX TRIP RX TX GUARD RX PT1 IN104 LOG1 IN105 PT2 IN106 LOG2 IN207 OUT105 KEY OUT107 KEY to from remote terminal 2 ...

Page 181: ... Application Guide for the SEL 311C Use the existing SEL 321 DCB application guide AG93 06 to help set up the SEL 311C in a DCB scheme see Communications Assisted Trip Logic General Overview on page 5 10 for more setting comparison information on the SEL 321 SEL 311C relays External Inputs See Optoisolated Inputs on page 7 3 for more information on optoisolated inputs BT Received Block Trip Signal...

Page 182: ...arrier Start Program an output contact for directional carrier start For example SELOGIC control equation setting OUT105 is set OUT105 DSTRT Output contact OUT105 drives a communications equipment transmitter input in a two terminal line application see Figure 5 15 In a three terminal line scheme output contact OUT106 is set the same as OUT104 see Figure 5 16 OUT106 DSTRT DSTART includes current r...

Page 183: ...tter input in a two terminal line application see Figure 5 15 In a three terminal line scheme another output contact e g OUT107 is set the same as OUT105 see Figure 5 16 OUT107 STOP BTX Block Trip Extension The received block trip input e g BT IN104 is routed through a dropout timer BTXD in the DCB logic in Figure 5 14 The timer output BTX is routed to the trip logic in Figure 5 1 ...

Page 184: ...s output contacts OUT104 OUT105 OUT106 and OUT107 connected to separate communications equipment for the two remote terminals Both output contact pairs are programmed the same OUT104 DSTRT NSTRT and OUT106 DSTRT NSTRT q M3P VPOLV 50PP3 Advanced Setting IAB IBC ICA q M3P w Z3G e 67Q3 r 67G3 e 50Q3 r 50G3 t M2P y Z2G e 67Q2 r 67G2 From this Figure DSTRT BT Setting Z3XT DSTRT u NSTRT STOP BTX u 0 2 C...

Page 185: ...on the SEL 311C The inputs operate as block trip receive inputs for the two remote terminals and are used in the SELOGIC control equation setting BT IN104 IN106 Depending on the installation perhaps one input e g IN104 can be connected in parallel to both communications equipment RX receive output contacts in Figure 5 16 Then setting BT would be programmed as BT IN104 and input IN106 can be used f...

Page 186: ...6 SEL 311C Connections to Communications Equipment for a Three Terminal Line DCB Scheme TX IN106 IN104 BT IN104 IN106 SEL 311C partial RX 85CO to from remote terminal 2 STOP START TX TX RX OUT107 TX OUT105 OUT106 OUT104 DSTRT NSTRT OUT105 STOP OUT106 DSTRT NSTRT OUT107 STOP OUT104 RX RX START STOP TX TX to from remote terminal 1 ...

Page 187: ...one of the target LEDs illuminate 3 5 and 8 16 but the TRIP target LED still illuminates Thus tripping via the front panel local control local bits serial port remote bits or OPEN command or voltage elements is indicated only by the illumination of the TRIP target LED Table 5 1 SEL 311C Front Panel Target LED Definitions LED Number LED Label Definition 1 EN Relay Enabled see Relay Self Tests on pa...

Page 188: ...consideration can be given to using the COMM target LED to indicate tripping via remote communications channels e g via serial port commands or SCADA asserting optoisolated inputs Use SELOGIC control equation setting DTT Direct Transfer Trip to accomplish this see Figure 5 1 For example if the OPEN command or remote bit RB1 see CON Command Control Remote Bit on page 10 37 are used to trip via the ...

Page 189: ...on is made as to how the element is used For example assume the SELOGIC control equation TR IN101 Z1G Z2G In this case if the Z1G element is set at the rising edge of TRIP the ZONE1 target will light even though IN101 is not set and the cause of the trip was Z2G TARGET RESET LAMP TEST Front Panel Pushbutton When the TARGET RESET LAMP TEST front panel pushbutton is pressed All front panel LEDs illu...

Page 190: ...in Asserted SV8 in turn asserts DP3 causing the message to display in the rotating default display This message can be removed from the display rotation by pushing the TARGET RESET pushbutton Relay Word bit TRGTR pulses to logical 1 unlatching SV8 and in turn deasserting DP3 Thus front panel rotating default displays can be easily reset along with the front panel targets by pushing the TARGET RESE...

Page 191: ...n of SELOGIC control equation setting CL Reclose Supervision Logic This subsection describes the logic that supervises automatic reclosing when an open interval time times out a final condition check right before the close logic asserts the close output contact Reclose Logic This subsection describes all the reclosing relay settings and logic needed for automatic reclosing besides the final close ...

Page 192: ...ot making a rising edge logical 0 to logical 1 transition A close failure condition does not exist Relay Word bit CF 0 Then the CLOSE Relay Word bit can be asserted to logical 1 if either of the following occurs A reclosing relay open interval times out qualified by SELOGIC control equation setting 79CLS see Figure 6 2 Or SELOGIC control equation setting CL goes from logical 0 to logical 1 rising ...

Page 193: ...ndition 79RI makes a rising edge logical 0 to logical 1 transition The Close Failure Timer times out Relay Word bit CF 1 The Close Failure Timer is inoperative if setting CFD OFF Factory Settings Example The factory settings for the close logic SELOGIC control equation settings are 52A IN101 CL CC ULCL TRIP The factory setting for the Close Failure Timer setting is CFD 60 00 cycles See Other Setti...

Page 194: ...lay is defeated see Reclosing Relay on page 6 11 Circuit Breaker Status Refer to the bottom of Figure 6 1 Note that SELOGIC control equation setting 52A circuit breaker status is available as Relay Word bit 52A This makes it convenient to set other SELOGIC control equations For example if the following setting is made 52A IN101 52a auxiliary contact wired to input IN101 or 52A IN101 52b auxiliary ...

Page 195: ...eout qualified by 79CLS Reclosing Relay Open Interval Timeout qualified by 79CLS q Reclose Initiate If setting 79CLSD OFF the Reclose Supervision Limit Timer is inoperative and does not time limit the wait for the Reclose Supervision condition 79CLS to assert to logical 1 Reclosing Relay Open Interval Timeout 79RI 79CLSD OFF Lockout Reclose Supervision Limit Timer Reclose Supervision CLOSE 79LO 79...

Page 196: ...nges For Most Applications Top of Figure 6 2 For most applications the Reclose Supervision Limit Time setting should be set to zero cycles 79CLSD 0 00 Open Interval 1 times out Open Interval 1 times out Open Interval Timer Open Interval Timer Reclose Supervision Limit Timer Reclose Supervision Limit Timer 79CLS Reclose Supervision Condition 79CLS Reclose Supervision Condition RCSF Reclose Supervis...

Page 197: ...bottom of Figure 6 2 is operative When an open interval times out the SELOGIC control equation reclose supervision setting 79CLS is then checked for a time window equal to setting 79CLSD If 79CLS asserts to logical 1 at any time during this 79CLSD time window then the open interval time out will propagate onto the final close logic in Figure 6 1 to automatically reclose the circuit breaker If 79CL...

Page 198: ...d When an open interval times out reclose supervision condition 79CLS is checked indefinitely until one of the other above unlatch conditions comes true The unlatching of the sealed in reclosing relay open interval time out condition by the assertion of SELOGIC control equation setting 79CLS indicates successful propagation of a reclosing relay open interval time out condition on to the close logi...

Page 199: ... 2 Relays Refer to Skip Shot and Stall Open Interval Timing Settings 79SKP and 79STL Respectively on page 6 21 SELOGIC control equation setting 79STL stalls open interval timing if it asserts to logical 1 If setting 79STL is deasserted to logical 0 open interval timing can continue The SEL 311C 1 Relay has no intentional open interval timing stall condition circuit breaker 52 1 closes first after ...

Page 200: ...line Or run the synchronism check element 25A1 through a programmable timer before using it in the preceding 79CLS and 79STL settings for the SEL 311C 2 see Figure 7 24 and Figure 7 25 Note the built in three cycle qualification of the synchronism check voltages shown in Figure 3 30 Additional Settings Example 2 Refer to subsection Synchronism Check Elements on page 3 44 Also refer to Figure 6 3 a...

Page 201: ...Relay States and General Operation Reset State Lockout State All Automatic Reclosing Attempts Unsuccessful Unsuccessful Reclose Initiation Other Lockout Conditions Power Up Reset Timer Times Out Reset Timer Times Out Other Lockout Conditions Unsuccessful Reclose Initiation Successful Reclose Initiation Successful Reclose Initiation Maintained Lockout Condition The circuit breaker has been closed f...

Page 202: ...ounter is driven to last shot with SELOGIC control equation setting 79DLS while open interval timing is in progress See Drive to Lockout and Drive to Last Shot Settings 79DTL and 79DLS Respectively on page 6 19 The close failure timer setting CFD times out see Figure 6 1 SELOGIC control equation setting 79DTL logical 1 see Drive to Lockout and Drive to Last Shot Settings 79DTL and 79DLS Respective...

Page 203: ...ing 79RSLD after the settings change and goes to the Reset State if it is not already in the Reset State and the shot counter returns to shot 0 If the relay happens to trip during this reset timing the relay will immediately go to the Lockout State because shot last shot Defeat the Reclosing Relay If any one of the following reclosing relay settings are made Reclose enable setting E79 N Open Inter...

Page 204: ... and 79OI4 are not operable In the example settings both open interval times 79OI3 and 79OI4 are set to zero But if the settings were 79OI3 0 00 cycles 79OI4 900 00 cycles set to some value other than zero open interval time 79OI4 would still be inoperative because a preceding open interval time is set to zero i e 79OI3 0 00 If open interval 1 time setting 79OI1 is set to zero 79OI1 0 00 cycles no...

Page 205: ...et open interval times that precede the first open interval set to zero Observe Shot Counter Operation Observe the reclosing relay shot counter operation especially during testing with the front panel shot counter screen accessed via the OTHER pushbutton See Functions Unique to the Front Panel Interface on page 11 6 Reset Timer The reset timer qualifies circuit breaker closure before taking the re...

Page 206: ...ogical 1 When the relay is not timing on an open interval e g it is in the Reset State or in the Lockout State OPTMN deasserts to logical 0 The relay can only time on an open interval when it is in the Reclose Cycle State but just because the relay is in the Reclose Cycle State does not necessarily mean the relay is timing on an open interval The relay only times on an open interval after successf...

Page 207: ...I senses a rising edge logical 0 to logical 1 transition the relay goes to the Lockout State Settings Example With settings 79RI TRIP 79RIS 52A 79CY the transition of the TRIP Relay Word bit from logical 0 to logical 1 initiates open interval timing only if the 52A 79CY Relay Word bit is at logical 1 52A logical 1 or 79CY logical 1 Input IN101 is assigned as the breaker status input in the factory...

Page 208: ... of reclose initiation on the opening of the circuit breaker Presume input IN101 is connected to a 52a circuit breaker auxiliary contact 52A IN101 With setting 79RI 52A the transition of the 52A Relay Word bit from logical 1 to logical 0 breaker opening initiates open interval timing Setting 79RI looks for a logical 0 to logical 1 transition thus Relay Word bit 52A is inverted in the 79RI setting ...

Page 209: ...sing will never take place the reclosing relay goes directly to the lockout state any time reclosing is initiated The reclosing relay is effectively inoperative Drive to Lockout and Drive to Last Shot Settings 79DTL and 79DLS Respectively When 79DTL logical 1 the reclosing relay goes to the Lockout State Relay Word bit 79LO logical 1 and the front panel LO Lockout LED illuminates 79DTL has a 60 cy...

Page 210: ...l 1 manual trip the relay is driven to the Lockout State 79DTL IN102 LB3 OC NOT IN102 logical 1 OC logical 1 Relay Word bit OC asserts for execution of the OPE command The drive to last shot setting is 79DLS 79LO Two open intervals are also set in the example settings resulting in last shot 2 Any time the relay is in the lockout state Relay Word bit 79LO logical 1 the relay is driven to last shot ...

Page 211: ... the new shot see Table 6 4 If the new shot is the last shot no open interval timing takes place and the relay goes to the Lockout State if the circuit breaker is open see Lockout State on page 6 12 After successful reclose initiation open interval timing does not start until allowed by the stall open interval timing setting 79STL If 79STL logical 1 open interval timing is stalled If 79STL logical...

Page 212: ... the open interval 2 time setting 79OI2 instead In Table 6 6 note that the open interval 1 time setting 79OI1 is a short time while the following open interval 2 time setting 79OI2 is significantly longer For a high magnitude fault greater than the phase instantaneous overcurrent element 50P2 threshold open interval 1 time is skipped and open interval timing proceeds on the following open interval...

Page 213: ...mple showing an application for setting 79STL Other Settings Considerations If no special skip shot or stall open interval timing conditions are desired make the following settings 79SKP 0 numeral 0 79STL 0 numeral 0 Block Reset Timing Setting 79BRS The block reset timing setting 79BRS keeps the reset timer from timing Depending on the reclosing relay state the reset timer can be loaded with eithe...

Page 214: ...ase time overcurrent element 51PT pickup 51P asserts momentarily But this assertion of pickup 51P has no effect on reset timing because the relay is in the Lockout State 79CY logical 0 The relay will time immediately on reset time 79RSLD and take the relay from the Lockout State to the Reset State with no additional delay because 79BRS is deasserted to logical 0 When the relay is in the Reclose Cy...

Page 215: ...SELOGIC control equations variables timers SV1 SV1T SV16 SV16T Output contacts OUT101 OUT107 and ALARM models 0311C00x and 0311C01x OUT201 OUT212 model 0311C01x Rotating default displays display points DP1 DP16 The above items are relay logic inputs and outputs They are combined with the distance overcurrent voltage and reclosing elements in SELOGIC control equation settings to realize numerous pr...

Page 216: ...tion Manual Date Code 20060320 Inputs Outputs Timers and Other Control Logic Overview Serial Port Communications and Commands for more information on viewing and making SELOGIC control equation settings commands SHO L and SET L ...

Page 217: ...and Figure 2 2 and Figure 2 8 through Figure 2 11 Figure 7 1 is used for the following discussion examples The optoisolated inputs in Figure 7 2 operate similarly Figure 7 1 Example Operation of Optoisolated Inputs IN101 Through IN106 Models 0311C00x and 0311C01x Open IN101 IN101 Logical 0 De energized Opto isolated Inputs Example Switch States Built in Debounce Timers Relay Word Bits Relay Word B...

Page 218: ... IN106 are updated every 1 4 cycle The optoisolated input status may assert input debounce timer settings less than 1 4 cycle because these timers run each 1 8 cycle However Relay Word bits IN101 through IN106 may not be available until the next 1 4 cycle relay processing interval If more than 2 cycles of debounce are needed run Relay Word bit INn n 101 through 106 through a SELOGIC control equati...

Page 219: ... setting is changed to 52A IN101 IN101 NOT IN101 See Close Logic on page 6 2 for more information on SELOGIC control equation setting 52A The pickup dropout timer for input IN101 IN101D might be set at IN101D 0 75 cycles to provide input energization de energization debounce Using Relay Word bit IN101 for the circuit breaker status setting 52A does not prevent using Relay Word bit IN101 in other S...

Page 220: ...lated Inputs 79DTL IN102 NOT IN102 NOT logical 1 logical 0 See Section 6 Close and Reclose Logic for more information on SELOGIC control equation setting 79DTL The pickup dropout timer for input IN102 IN102D in this example might be set at IN102D 1 00 cycle to provide input energization de energization debounce ...

Page 221: ... label settings Note the first setting in Table 7 1 NLBn is the overall switch name setting Make each label setting through the serial port using the command SET T View these settings using the serial port command SHO T see Section 9 Setting the Relay and Section 10 Serial Port Communications and Commands Local Control Switch Types Configure any local control switch as one of the following three s...

Page 222: ...gical 1 position for one processing interval 1 4 cycle Figure 7 7 Local Control Switch Configured as an ON OFF MOMENTARY Switch Disable local control switches by nulling out all the label settings for that switch see Section 9 Setting the Relay The local bit associated with this disabled local control switch is then fixed at logical 0 Logical 1 LBn n 1 through 16 ON Position Logical 1 OFF Position...

Page 223: ... Close and Reclose Logic 79DTL LB3 Figure 7 9 Configured Manual Close Switch Drives Local Bit LB4 Local bit LB4 is set to close the circuit breaker in the following SELOGIC control equation setting CL LB4 SELOGIC control equation setting CL is for close conditions other than automatic reclosing or serial port CLOSE command see Figure 6 1 Table 7 3 Local Bits LB3 and LB4 Used for Manual Trip and Cl...

Page 224: ...t is deasserted to logical 0 when power is lost it comes back in the OFF position corresponding local bit is still deasserted to logical 0 when power is restored This feature makes the local bit feature behave the same as a traditional installation with panel mounted control switches If power is lost to the panel the front panel control switch positions remain unchanged Settings Change or Active S...

Page 225: ...ts can be used much as optoisolated inputs are used in operating latch control switches see discussion following Figure 7 15 Pulse momentarily operate the remote bits for this application Remote Bit States Not Retained When Power Is Lost The states of the remote bits Relay Word bits RB1 RB16 are not retained if power to the relay is lost and then restored The remote control switches always come ba...

Page 226: ...erted to logical 0 before a settings change or an active setting group change it comes back in the OFF position corresponding remote bit is still deasserted to logical 0 after the change If settings are changed for a setting group other than the active setting group there is no interruption of the remote bits the relay is not momentarily disabled ...

Page 227: ...lay output contact Pulse the reset input to open reset the latching relay output contact Often the external contacts wired to the latching relay inputs are from remote control equipment e g SCADA RTU Figure 7 11 Traditional Latching Relay The sixteen 16 latch control switches in the SEL 311C provide latching relay type functions Figure 7 12 Latch Control Switches Drive Latch Bits LT1 Through LT16 ...

Page 228: ...is enabled again The control operates in a cyclic manner pulse to enable pulse to disable pulse to enable pulse to disable This reclosing relay logic is implemented in the following SELOGIC control equation settings and displayed in Figure 7 14 SET1 IN104 LT1 rising edge of input IN104 AND NOT LT1 RST1 IN104 LT1 rising edge of input IN104 AND LT1 79DTL LT1 NOT LT1 drive to lockout setting Figure 7...

Page 229: ... e g latch bit LT1 changes state from logical 0 to logical 1 For example in Figure 7 14 if LT1 logical 0 input IN104 is routed to setting SET1 as discussed previously SET1 IN104 rising edge of input IN104 If input IN104 is then asserted for a few cycles by the SCADA contact see Pulse 1 in Figure 7 15 SET1 is asserted to logical 1 for one processing interval This causes latch bit LT1 to change stat...

Page 230: ...ned Power Loss The states of the latch bits LT1 LT16 are retained if power to the relay is lost and then restored If a latch bit is asserted e g LT2 logical 1 when power is lost it comes back asserted LT2 logical 1 when power is restored If a latch bit is deasserted e g LT3 logical 0 when power is lost it comes back deasserted LT3 logical 0 when power is restored This feature makes the latch bit f...

Page 231: ...Figure 7 16 Time Line for Reset of Latch Bit LT2 After Active Setting Group Change In Figure 7 16 latch bit LT2 is reset deasserted to logical 0 when reset setting RST2 asserts to logical 1 for the short time right after setting Group 4 is activated This logic can be repeated for other latch bits Make Latch Control Switch Settings With Care The latch bit states are stored in nonvolatile memory so ...

Page 232: ...application in Figure 7 13 Figure 7 15 that adds more security is a timer with pickup dropout times set the same see Figure 7 17 and Figure 7 18 Suppose that SV6PU and SV6DO are both set to 300 cycles Then the SV6T timer keeps the state of latch bit LT1 from being able to be changed at a rate faster than once every 300 cycles 5 seconds Figure 7 17 Latch Control Switch With Time Delay Feedback Cont...

Page 233: ...ettings SS1 SS6 have priority over the serial port GROUP command and the front panel GROUP pushbutton in selecting the active setting group Operation of SELOGIC Control Equation Settings SS1 SS6 Each setting group has its own set of SELOGIC control equation settings SS1 SS6 The operation of these settings is explained with an example Table 7 4 Definitions for Active Setting Group Indication Relay ...

Page 234: ...nt panel GROUP pushbutton in selecting the active setting group If any one of SS1 SS6 asserts to logical 1 neither the serial port GROUP command nor the front panel GROUP pushbutton can be used to switch the active setting group But if SS1 SS6 all deassert to logical 0 the serial port GROUP command or the front panel GROUP pushbutton can be used to switch the active setting group See Section 10 Se...

Page 235: ...c is implemented in the SELOGIC control equation settings in Table 7 6 SELOGIC control equation timer input setting SV8 in Table 7 6 has logic output SV8T shown in operation in Figure 7 20 for both setting Groups 1 and 4 Figure 7 20 SELOGIC Control Equation Variable Timer SV8T Used in Setting Group Switching Table 7 6 SELOGIC Control Equation Settings for Switching Active Setting Group Between Set...

Page 236: ...ion of setting SS4 Optoisolated input IN105 also has its own built in debounce timer IN105D see Figure 7 1 Note that Figure 7 21 shows both setting Group 1 and setting Group 4 settings The setting Group 1 settings top of Figure 7 21 are enabled only when setting Group 1 is the active setting group and likewise for the setting Group 4 settings at the bottom of the figure Setting Group 4 is now the ...

Page 237: ...s shown in Table 7 7 The SEL 311C can be programmed to operate similarly Use three optoisolated inputs to switch between the six setting groups in the SEL 311C In this example optoisolated inputs IN101 IN102 and IN103 on the relay are connected to a rotating selector switch in Figure 7 22 TGR SV8PU SV8PU 4 1 SV8 SG1 TGR 1 SV8 SG4 SV8T SS1 IN105 SV8T Active Setting Group SV8T SS4 IN105 SV8T Setting...

Page 238: ...ical 1 Inputs IN101 and IN102 are energized and IN103 is de energized SS3 IN103 IN102 IN101 NOT IN103 IN102 IN101 NOT logical 0 logical 1 logical 1 logical 1 To get from the position 3 to position 5 on the selector switch the switch passes through the position 4 The switch is only briefly in position 4 SS4 IN103 IN102 IN101 IN103 NOT IN102 NOT IN101 logical 1 NOT logical 0 NOT logical 0 logical 1 ...

Page 239: ...0 logical 1 logical 1 To get from position 5 to position REMOTE on the selector switch the switch passes through the positions 4 3 2 and 1 The switch is only briefly in the these positions but not long enough to be qualified by time setting TGR in order to change the active setting group to any one of these setting groups Selector Switch Now Rests on Position REMOTE Refer to Figure 7 23 If the sel...

Page 240: ...ed Settings Change If individual settings are changed for the active setting group or one of the other setting groups the active setting group is retained much like in the preceding Power Loss explanation If individual settings are changed for a setting group other than the active setting group there is no interruption of the active setting group the relay is not momentarily disabled If the indivi...

Page 241: ... the limit can result in an EEPROM self test failure An average of 10 setting groups changes per day can be made for a 25 year relay service life This requires that SELOGIC control equation settings SS1 SS6 see Table 7 5 be set with care Settings SS1 SS6 cannot result in continuous cyclical changing of the active setting group Time setting TGR qualifies settings SS1 SS6 before changing the active ...

Page 242: ...able timer outputs as shown in Figure 7 24 and Figure 7 25 Timers SV1T SV6T in Figure 7 24 have a setting range of a little over 4 5 hours 0 00 999999 00 cycles in 0 25 cycle increments Timers SV7T SV16T in Figure 7 25 have a setting range of almost 4 5 minutes 0 00 16000 00 cycles in 0 25 cycle increments These timer setting ranges apply to both pickup and dropout times SVnPU and SVnDO n 1 16 Fig...

Page 243: ...O is set for a 2 cycle dropout SV1DO 2 cycles The output of the timer Relay Word bit SV1T operates output contact OUT103 OUT103 SV1T Additional Settings Example 1 Another application idea is dedicated breaker failure protection see Figure 7 26 SV6 IN101 breaker failure initiate SV7 SV7 IN101 50P1 50G1 OUT101 SV6T retrip OUT102 SV7T breaker failure trip SV7T SV7 SV7 SV7PU SV7D0 SV8 SV8T SV8 SV8PU S...

Page 244: ...0G1 dropout Note that Figure 7 26 suggests the option of having output contacts OUT103 and OUT104 operate as additional breaker failure trip outputs This is done by making the following SELOGIC control equation settings OUT103 SV7T breaker failure trip OUT104 SV7T breaker failure trip Additional Settings Example 2 The seal in logic circuit in the dedicated breaker failure scheme in Figure 7 26 can...

Page 245: ...s If power is lost to the relay settings are changed for the active setting group or the active setting group is changed the seal in logic circuit is broken by virtue of Relay Word bit SV7 being reset to logical 0 assuming input IN101 is not asserted Relay Word bit SV7T is also reset to logical 0 and timer settings SV7PU and SV7DO load up again ...

Page 246: ...key permissive trip see Section 5 Trip and Target Logic OUT107 0 output contact OUT107 not used set equal to zero Operation of Output ContactsforDifferent Output Contact Types Output Contacts OUT101 Through OUT107 Refer to Figure 7 27 The execution of the serial port command PULSE n n OUT101 through OUT107 asserts the corresponding Relay Word bit OUT101 through OUT107 to logical 1 The assertion of...

Page 247: ... the output contact coil is de energized and closed when the output contact coil is energized A b type output contact is closed when the output contact coil is de energized and open when the output contact coil is energized To verify ALARM output contact mechanical integrity execute the serial port command PULSE ALARM Execution of this command momentarily de energizes the ALARM output contact coil...

Page 248: ...on Models 0311C00x and 0311C01x Open OUT101 a De energized Logical 0 OUT101 OUT101 PULSE OUT101 Output Contact Coil States SELOGIC Control Equations Settings Relay Word Bits Example Relay Word Bit States Serial Port Commands see q Output Contacts and example contact types see w Output Contact Terminal States Closed OUT102 a Energized Logical 1 OUT102 OUT102 PULSE OUT102 Open OUT103 a De energized ...

Page 249: ... b OUT206 b Energized De energized De energized De energized Logical 0 Logical 1 OUT201 OUT202 Logical 0 Logical 0 Logical 0 Logical 1 OUT203 OUT204 OUT205 OUT206 PULSE OUT201 PULSE OUT202 PULSE OUT203 PULSE OUT204 PULSE OUT205 PULSE OUT206 OUT201 OUT202 OUT203 OUT204 OUT205 OUT206 see w OUT210 OUT211 OUT212 Serial Closed OUT212 b De energized Logical 0 OUT212 PULSE OUT212 Open OUT211 b Energized ...

Page 250: ...L IN102 NOT IN102 drive to lockout setting Figure 7 29 Traditional Panel Light Installations Note that Figure 7 29 corresponds to Figure 7 3 Reclosing Relay Status Indication In Figure 7 29 the 79 ENABLED panel light illuminates when the 79 Enable switch is closed When the 79 Enable switch is open the 79 ENABLED panel light extinguishes and it is understood that the reclosing relay is disabled Cir...

Page 251: ...mand SHO T see Section 9 Setting the Relay and Section 10 Serial Port Communications and Commands These text settings are displayed on the SEL 311C front panel display on a time variable rotation through use of Global setting SCROLD see Rotating Default Display on page 11 12 for more specific operation information The following settings examples use optoisolated inputs IN101 and IN102 in the displ...

Page 252: ...ponding text setting DP1_0 on the front panel display Circuit Breaker Status Indication Make SELOGIC control equation display point setting DP2 DP2 IN101 Make corresponding complementary text settings DP2_1 BREAKER CLOSED DP2_0 BREAKER OPEN Display point setting DP2 controls the display of the text settings Circuit Breaker Closed In Figure 7 30 optoisolated input IN101 is energized when the 52a ci...

Page 253: ...n the 52a circuit breaker auxiliary contact is closed resulting in DP2 IN101 logical 1 This results in the display of corresponding text setting DP2_1 on the front panel display Circuit Breaker Open In Figure 7 30 optoisolated input IN101 is de energized when the 52a circuit breaker auxiliary contact is open resulting in DP2 IN101 logical 0 Corresponding text setting DP2_0 is not set it is blank s...

Page 254: ...ponding text settings DPn_1 and DPn_0 are made only once and used in all setting groups Refer to Figure 7 30 and the following discussion of an example setting group switching discussion Setting Group 1 Is the Active Setting Group When setting Group 1 is the active setting group optoisolated input IN102 operates as a reclose enable disable switch with the following settings SELOGIC control equatio...

Page 255: ... groups DP1_1 79 ENABLED displayed when DP1 logical 1 DP1_0 79 DISABLED displayed when DP1 logical 0 Because SELOGIC control equation display point setting DP1 is always at logical 0 the corresponding text setting DP1_0 continually displays in the rotating default display Additional Rotating Default Display Example See Figure 5 17 and accompanying text in Section 5 Trip and Target Logic for an exa...

Page 256: ...ow time overcurrent elements in primary units This example will set the 51PP and 51GP to display in the rotating default display Set the following Setting DPn 0 and using the DPn_0 in the text settings allows the setting to permanently rotate in the display The DPn logic equation can be set to control the text display turning it on and off under certain conditions With the relay set as shown above...

Page 257: ...iable from Table 7 10 For example setting DP1_0 OC PU 51PP A will display Or setting DP1_0 OC PU 001 A will display Displaying Metering Quantities on the Rotating Default Display Display points can be programmed to display metering quantities automatically making this information available without the use of pushbuttons The values shown in Table 7 11 can be set to automatically display on the rota...

Page 258: ...x x x K V y y y negative sequence voltage MWA M W A x x x x x A megawatts MWA M W B x x x x x B megawatts MWC M W C x x x x x C megawatts MW3 M W 3 P x x x x x three phase megawatts MVARA M V A R A x x x x x A megavars MVARB M V A R B x x x x x B megavars MVARC M V A R C x x x x x C megavars MVAR3 M V A R 3 P x x x x x three phase megavars PFA P F A x x x L E A D A power factor PFB P F B x x x L A...

Page 259: ...M x x x x C demand megawatts out MWCPO M W C O P K x x x x C peak megawatts out MW3DO M W 3 O D E M x x x x Three phase demand megawatts out MW3PO M W 3 O P K x x x x Three phase peak megawatts out MVRADO M V R A O D E M x x x x A demand megavars out MVRAPO M V R A O P K x x x x A peak megavars out MVRBDO M V R B O D E M x x x x B demand megavars out MVRBPO M V R B O P K x x x x B peak megavars ou...

Page 260: ...in the display The DPn logic equation can be set to control the text display turning it on and off under certain conditions With the relay set as shown above the LCD will show the following then Displaying Breaker Monitor Output Information on the Rotating Default Display Display points can be programmed to display breaker monitor output information automatically making this information available ...

Page 261: ... the display The DPn logic equation can be set to control the text display turning it on and off under certain conditions With the relay set as shown above the LCD will show the following Table 7 13 Mnemonic Settings for Self Check Status on the Rotating Default Display Mnemonic Display Description BRKDATE R S T D A T m m d d y y last reset date BRKTIME R S T T I M h h m m s s last reset time CTRL...

Page 262: ...struction Manual Date Code 20060320 Inputs Outputs Timers and Other Control Logic Rotating Default Display Only on Models With LCD then and then EXT TRIPS XXXXX CTRL TRIPS XXXXX CTRL IA XXXXXX kA EXT IA XXXXXX kA WEAR A XXX ...

Page 263: ...C Relay monitoring functions include Breaker Monitor on page 8 2 Station DC Battery Monitor on page 8 15 The SEL 311C metering functions include Demand Metering on page 8 20 Energy Metering on page 8 28 Maximum Minimum Metering on page 8 29 Synchrophasor Metering on page 8 31 This section explains these functions in detail ...

Page 264: ...1 provides an example of breaker maintenance information for an example circuit breaker The breaker maintenance information in Table 8 1 is plotted in Figure 8 1 Connect the plotted points in Figure 8 1 for a breaker maintenance curve To estimate this breaker maintenance curve in the SEL 311C breaker monitor three set points are entered Set Point 1 maximum number of close open operations with corr...

Page 265: ...d Metering Functions Breaker Monitor Figure 8 1 Plotted Breaker Maintenance Points for an Example Circuit Breaker 10 000 1000 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 50 40 30 20 10 5 Number of Close Open Operations kA Interrupted per Operation ...

Page 266: ...t curve fit with the plotted breaker maintenance points in Figure 8 1 Each phase A B and C has its own breaker maintenance curve like that in Figure 8 2 because the separate circuit breaker interrupting contacts for phases A B and C do not necessarily interrupt the same magnitude current depending on fault type and loading Table 8 2 Breaker Monitor Settings and Settings Ranges Setting Definition R...

Page 267: ...er maintenance curve levels off horizontally to the left of set point KASP1 COSP1 This is the close open operation limit of the circuit breaker COSP1 10000 regardless of interrupted current value 10 000 100 1000 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 50 40 30 20 10 5 Number of Close Open Operations kA Interrupted per Operation KASP1 1 2 COSP1 10000 KASP2 8 0 COSP2...

Page 268: ...onitor maintenance curve and the breaker monitor accumulated currents trips As detailed in Figure 8 3 the breaker monitor actually reads in the current values 1 5 cycles after the assertion of BKMON This helps especially if an instantaneous trip occurs The instantaneous element trips when the fault current reaches its pickup setting level The fault current may still be climbing to its full value a...

Page 269: ... Percent Breaker Wear Refer to Figure 8 6 The current value changes from 2 5 kA to 12 0 kA and 12 0 kA is interrupted 11 times 11 close open operations 24 13 pushing the breaker maintenance curve from the 25 percent wear level to the 50 percent wear level Compare the 100 percent and 50 percent curves and note that for a given current value the 50 percent curve has only 1 2 of the close open operat...

Page 270: ...nitor and Metering Functions Breaker Monitor Figure 8 4 Breaker Monitor Accumulates 10 Percent Wear 10 000 100 10 1000 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 50 40 30 20 10 5 Number of Close Open Operations kA Interrupted per Operation ...

Page 271: ...tor and Metering Functions Breaker Monitor Figure 8 5 Breaker Monitor Accumulates 25 Percent Wear 10 000 100 10 1000 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 50 40 30 20 10 5 Number of Close Open Operations kA Interrupted per Operation 25 ...

Page 272: ...itor and Metering Functions Breaker Monitor Figure 8 6 Breaker Monitor Accumulates 50 Percent Wear 10 000 100 1000 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 50 40 30 20 10 5 Number of Close Open Operations kA Interrupted per Operation 25 50 ...

Page 273: ...r Breaker Monitor Output When the breaker maintenance curve for a particular phase A B or C reaches the 100 percent wear level see Figure 8 7 a corresponding Relay Word bit BCWA BCWB or BCWC asserts 10 000 100 1000 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 50 40 30 20 10 5 Number of Close Open Operations kA Interrupted per Operation 50 ...

Page 274: ...BRE R command See BRE n Command Preload Reset Breaker Wear on page 10 34 The BRE W command allows the internal trips and currents the external trips and currents and the percent breaker wear to be preloaded for each individual phase The BRE R command resets the accumulated values and the percent wear for all three phases For example if breaker contact wear has reached the 100 percent wear level fo...

Page 275: ...gic output of Figure 5 1 If TRIP is asserted TRIP logical 1 the current and trip count information is accumulated under relay initiated trips Rly Trips If TRIP is deasserted TRIP logical 0 the current and trip count information is accumulated under externally initiated trips Ext Trips Regardless of whether the current and trip count information is accumulated under relay initiated trips or externa...

Page 276: ...rip This is because when BKMON is newly asserted input IN106 energized the TRIP Relay Word bit is asserted Thus the current and trip count information is accumulated under relay initiated trips Rly Trips If the control switch trip or some other external trip asserts energizing the trip bus the breaker monitor will deem it an externally initiated trip This is because when BKMON is newly asserted in...

Page 277: ...gs DCLOP and DCHIP is OFF 20 to 300 Vdc 01 Vdc increments This range allows the SEL 311C to monitor nominal battery voltages of 24 48 110 125 and 250 V When testing the pickup settings DCLOP and DCHIP do not operate the SEL 311C outside of the power supply limits listed in Specifications on page 1 10 Figure 8 9 DC Under and Overvoltage Elements Logic outputs DCLO and DCHI in Figure 8 9 operate as ...

Page 278: ...utput contacts deassert on total loss of power Thus the resultant dc voltage element at the bottom of Figure 8 10 would probably be a better choice see following discussion DCLO DCHI Bottom of Figure 8 10 Output contact OUT106 asserts when DCHIP Vdc DCLOP Pickup settings DCLOP and DCHIP are set such that output contact OUT106 asserts when dc battery voltage stays between allowable limits If the re...

Page 279: ...onal Application Other than alarming the dc voltage elements can be used to disable reclosing For example if the station dc batteries have a problem and the station dc battery voltage is declining drive the reclosing relay to lockout 79DTL SV4T NOT SV4T Timer output SV4T is from the bottom of Figure 8 10 When dc voltage falls below pickup DCHIP timer output SV4T drops out logical 0 driving the rel...

Page 280: ... control equation event report generation setting ER OUT102 In this example output contact OUT102 is set to close OUT102 CLOSE CLOSE is the logic output of Figure 6 1 When output contact OUT102 closes and energizes the circuit breaker close coil any change in station dc battery voltage can be observed in column Vdc in the event report This event report generation setting ER OUT102 might be made ju...

Page 281: ...ected to the rear panel terminals labeled POWER When powering the relay with ac voltage the dc voltage elements in Figure 8 9 see the average of the sampled ac voltage powering the relay which is very near zero volts as displayed in column Vdc in event reports Pickup settings DCLOP and DCHIP should be set off DCLOP OFF DCHIP OFF since they are of no real use If a raw event report is displayed with...

Page 282: ...L 311C provides demand and peak demand metering for the following values Depending on enable setting EDEM these demand and peak demand values are thermal demand or rolling demand values The differences between thermal and rolling demand metering are explained in the following discussion Comparison of Thermal and Rolling Demand Meters The example in Figure 8 11 shows the response of thermal and rol...

Page 283: ...response of the thermal demand meter in Figure 8 11 middle to the step current input top is analogous to the parallel RC circuit in Figure 8 12 Thermal Demand Meter Response EDEM THM Thermal Demand Current per unit 0 0 5 10 15 0 5 0 9 1 0 Time Minutes Rolling Demand Meter Response EDEM ROL Rolling Demand Current per unit DMTC 15 minutes 0 0 5 10 15 33 67 1 0 Time Minutes Step Current Input Instant...

Page 284: ...percent 0 9 per unit of full applied value 1 0 per unit after a time period equal to setting DMTC 15 minutes referenced to when the step current input is first applied The SEL 311C updates thermal demand values approximately every two seconds Rolling Demand Meter Response EDEM ROL The response of the rolling demand meter in Figure 8 11 bottom to the step current input top is calculated with a slid...

Page 285: ...e totals Rolling demand meter response at Time 5 minutes 1 0 3 0 33 per unit Time 10 Minutes The 3 five minute intervals in the sliding time window at Time 10 minutes each integrate into the following five minute totals Rolling demand meter response at Time 10 minutes 2 0 3 0 67 per unit Time 15 Minutes The 3 five minute intervals in the sliding time window at Time 15 minutes each integrate into t...

Page 286: ...DMTC Demand meter time constant 5 10 15 30 or 60 minutes PDEMP Phase demand current pickup OFF GDEMP Residual ground demand current pickup 0 10 3 20 A 1 A nominal 0 50 16 0 A 5 A nominal QDEMP Negative sequence demand current pickup in 0 01 A steps NOTE Changing setting EDEM or DMTC resets the demand meter values to zero This also applies to changing the active setting group and setting EDEM or DM...

Page 287: ...overcurrent element settings and SELOGIC control equation torque control setting 51GTC EDEM THM DMTC 5 GDEMP 1 0 51GP 1 50 50G2P 2 30 51GTC GDEM GDEM 50G2 Refer to Figure 8 13 Figure 8 14 and Figure 3 25 Figure 8 14 Raise Pickup of Residual Ground Time Overcurrent Element for Unbalance Current Residual Ground Demand Current Below Pickup GDEMP When unbalance current IG is low unbalance demand curre...

Page 288: ...2 Thus the residual ground time overcurrent element 51GT operates with an effective less sensitive pickup 50G2P 2 30 A secondary The reduced sensitivity keeps the residual ground time overcurrent element 51GT from tripping on higher unbalance current IG Residual Ground Demand Current Goes Below Pickup GDEMP Again When unbalance current IG decreases again unbalance demand current IG DEM follows goi...

Page 289: ...ring Updating and Storage The SEL 311C updates demand values approximately every two seconds The relay stores peak demand values to nonvolatile storage once per day it overwrites the previous stored value if it is exceeded Should the relay lose control power it will restore the peak demand values saved by the relay at 23 50 hours on the previous day Demand metering updating and peak recording is m...

Page 290: ...ree phase megawatt and megavar hours Via Front Panel The information and reset functions available via the previously discussed serial port commands MET E and MET RE are also available via the front panel METER pushbutton See Figure 11 2 Energy Metering Updating and Storage The SEL 311C updates energy values approximately every two seconds The relay stores energy values to nonvolatile storage once...

Page 291: ... if the following conditions are met SELOGIC control equation setting FAULT is deasserted logical 0 The factory default setting is set with time overcurrent and distance element pickups FAULT 51G 51Q M2P Z2G If there is a fault these elements pick up and block updating of maximum minimum metering values The metering value is above the previous maximum or below the previous minimum for two cycles F...

Page 292: ...s Maximum Minimum Metering The SEL 311C stores maximum minimum values to nonvolatile storage once per day it overwrites the previous stored value if it is exceeded Should the relay lose control power it will restore the maximum minimum values saved by the relay at 23 50 hours on the previous day ...

Page 293: ...ons Synchrophasor Metering Synchrophasor Metering View Synchrophasor Metering Information Via Serial Port See MET Command Metering Data on page 10 20 The MET PM command displays the synchrophasor measurements For more information see View Synchrophasors by Using the MET PM Command on page G 12 ...

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Page 295: ... Port SET Commands Command Settings Type Description Settings Sheetsa a Located at the end of this section SET m Relay Distance overcurrent and voltage elements reclosing relay timers etc for settings group m m 1 2 3 4 5 6 1 15 SET L m Logic SELOGIC control equations for settings group m m 1 2 3 4 5 6 16 21 SET G Global Battery and breaker monitors optoisolated input debounce timers synchrophasors...

Page 296: ... Front Panel The relay front panel SET pushbutton provides access to the Relay Global and Port settings only Thus the corresponding Relay Global and Port settings sheets that follow in this section can also be used when making these settings via the front panel Refer to Figure 11 3 for information on settings changes via the front panel ...

Page 297: ...gic settings for the active setting group see Table 9 1 the relay is disabled while it saves the new settings The ALARM contact closes momentarily for b contact opens for an a contact see Figure 7 27 and the EN LED extinguishes see Table 5 1 while the relay is disabled The relay is disabled for about one second If Logic settings are changed for the active group the relay can be disabled for up to ...

Page 298: ... made to the Relay or Logic settings for a setting group other than the active setting group see Table 9 1 the relay is not disabled while it saves the new settings The ALARM contact closes momentarily for b contact opens for an a contact see Figure 7 27 but the EN LED remains on see Table 5 1 while the new settings are saved ...

Page 299: ... time Tr M 1 Table 9 3 Equations Associated With U S Curves Curve Type Operating Time Reset Time Figure U1 Moderately Inverse Figure 9 1 U2 Inverse Figure 9 2 U3 Very Inverse Figure 9 3 U4 Extremely Inverse Figure 9 4 U5 Short Time Inverse Figure 9 5 Table 9 4 Equations Associated With I E C Curves Curve Type Operating Time Reset Time Figure C1 Standard Inverse Figure 9 6 C2 Very Inverse Figure 9 ...

Page 300: ... 00 5 00 4 00 3 00 2 00 1 00 15 00 12 00 10 00 8 00 01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 30 25 60 50 600 500 150 125 300 250 1500 1250 3000 2500 6000 5000 ...

Page 301: ...00 4 00 3 00 2 00 1 00 15 00 12 00 10 00 8 00 01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 30 25 60 50 600 500 150 125 300 250 1500 1250 3000 2500 6000 5000 ...

Page 302: ...0 0 50 10 00 8 00 6 00 5 00 4 00 3 00 2 00 15 00 01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 30 25 60 50 600 500 150 125 300 250 1500 1250 3000 2500 6000 5000 ...

Page 303: ...00 1 00 0 50 15 00 12 00 10 00 8 00 6 00 5 00 4 00 01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 30 25 60 50 600 500 150 125 300 250 1500 1250 3000 2500 6000 5000 ...

Page 304: ... 00 2 00 6 00 3 00 4 00 5 00 10 00 8 00 12 00 15 00 01 5 6 7 8 1 9 02 03 04 05 06 07 1 08 09 2 3 4 5 6 1 7 8 9 2 3 4 5 6 7 8 10 9 20 30 50 40 60 100 90 70 80 80 9 2 3 4 5 6 7 8 10 20 30 40 50 60 70 90 100 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 60 50 30 25 150 125 300 250 1500 1250 600 500 3000 2500 6000 5000 ...

Page 305: ...0 60 0 05 0 50 0 40 0 30 0 20 0 10 1 00 0 90 0 80 0 70 01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 30 25 60 50 600 500 150 125 300 250 1500 1250 3000 2500 6000 5000 ...

Page 306: ...30 0 20 0 10 0 05 1 00 0 90 0 80 0 70 0 60 0 50 0 40 01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 30 25 60 50 600 500 150 125 300 250 1500 1250 3000 2500 6000 5000 ...

Page 307: ...01 5 6 7 8 9 1 02 03 04 05 09 07 06 08 1 2 3 4 5 7 6 9 8 1 4 2 3 5 6 7 8 9 10 40 20 30 70 50 60 80 90 100 80 10 2 3 6 4 5 7 9 8 20 50 30 40 60 70 100 90 0 20 0 10 0 05 1 00 0 90 0 80 0 70 0 60 0 50 0 40 0 30 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 3 2 5 6 5 15 12 5 30 25 60 50 600 500 150 125 300 250 1500 1250 3000 2500 6000 5000 ...

Page 308: ...0 0 90 0 80 0 70 0 60 0 50 0 40 0 30 7 6 5 1 9 8 1 4 2 3 5 6 8 7 9 1 2 3 4 5 7 6 4 2 3 7 6 5 10 9 8 40 20 30 70 50 60 80 90 100 50 9 8 10 20 30 40 300 200 100 80 60 70 90 1000 900 800 700 600 500 400 Time in Seconds Multiples of Pickup Time in Cycles 60 Hz 50Hz 30 25 60 50 150 125 300 250 3000 2500 600 500 1500 1250 6000 5000 15000 12500 30000 25000 60000 50000 ...

Page 309: ...20 30 40 50 60 70 80 90 100 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 01 02 03 04 05 06 07 08 09 100 1 2 3 4 5 6 7 8 9 5 6 7 8 9 90 80 70 60 50 40 30 20 10 Time in Seconds Time in Cycles 60 Hz 50 Hz 6000 5000 3000 2500 1500 1250 600 500 300 250 150 125 60 50 30 25 15 12 5 6 5 3 2 5 Multiples of Pickup 0 05 0 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 1 00 ...

Page 310: ...Z1GT M2P M2PT Z2G Z2GT 3 Z1T Z2T 50P1 67P1 67P1T 50G1 67G1 67G1T 4 51G 51GT 51GR LOP ILOP ZLOAD ZLOUT ZLIN 5 LB1 LB2 LB3 LB4 LB5 LB6 LB7 LB8 6 LB9 LB10 LB11 LB12 LB13 LB14 LB15 LB16 7 RB1 RB2 RB3 RB4 RB5 RB6 RB7 RB8 8 RB9 RB10 RB11 RB12 RB13 RB14 RB15 RB16 9 LT1 LT2 LT3 LT4 LT5 LT6 LT7 LT8 10 LT9 LT10 LT11 LT12 LT13 LT14 LT15 LT16 11 SV1 SV2 SV3 SV4 SV1T SV2T SV3T SV4T 12 SV5 SV6 SV7 SV8 SV5T SV6T...

Page 311: ... RMB6B RMB5B RMB4B RMB3B RMB2B RMB1B 50 TMB8B TMB7B TMB6B TMB5B TMB4B TMB3B TMB2B TMB1B 51 LBOKB CBADB RBADB ROKB LBOKA CBADA RBADA ROKA 52 81D1 81D2 81D3 81D4 81D5 81D6 27B81 53 81D1T 81D2T 81D3T 81D4T 81D5T 81D6T a See Figure 7 1 for more information on the operation of optoisolated inputs IN101 through IN106 See Figure 7 2 for more information on the operation of optoisolated inputs IN201 throu...

Page 312: ...re 3 16 Z2G Zone 2 mho and or quad distance instantaneous see Figure 3 8 Z2GT Zone 2 ground distance time delayed see Figure 3 16 3 Z1T Zone 1 phase and or ground distance time delayed see Figure 3 16 Z2T Zone 2 phase and or ground distance time delayed see Figure 3 16 50P1 Level 1 phase instantaneous overcurrent element A B or C above pickup setting 50P1P see Figure 3 19 67P1 Level 1 torque contr...

Page 313: ...itches LB2 Local Bit 2 asserted see Figure 7 4 LB3 Local Bit 3 asserted see Figure 7 4 LB4 Local Bit 4 asserted see Figure 7 4 LB5 Local Bit 5 asserted see Figure 7 4 LB6 Local Bit 6 asserted see Figure 7 4 LB7 Local Bit 7 asserted see Figure 7 4 LB8 Local Bit 8 asserted see Figure 7 4 6 LB9 Local Bit 9 asserted see Figure 7 4 LB10 Local Bit 10 asserted see Figure 7 4 LB11 Local Bit 11 asserted se...

Page 314: ...LT10 Latch Bit 10 asserted see Figure 7 12 LT11 Latch Bit 11 asserted see Figure 7 12 LT12 Latch Bit 12 asserted see Figure 7 12 LT13 Latch Bit 13 asserted see Figure 7 12 LT14 Latch Bit 14 asserted see Figure 7 12 LT15 Latch Bit 15 asserted see Figure 7 12 LT16 Latch Bit 16 asserted see Figure 7 12 11 SV1 SELOGIC control equation variable timer input SV1 asserted see Figure 7 24 Testing Seal in f...

Page 315: ...input SV11 asserted see Figure 7 25 SV12 SELOGIC control equation variable timer input SV12 asserted see Figure 7 25 SV9T SELOGIC control equation variable timer output SV9T asserted see Figure 7 25 Control SV10T SELOGIC control equation variable timer output SV10T asserted see Figure 7 25 SV11T SELOGIC control equation variable timer output SV11T asserted see Figure 7 25 SV12T SELOGIC control equ...

Page 316: ...undervoltage element see Figure 8 9 17 BCW BCWA BCWB BCWC BCWA A phase breaker contact wear has reached 100 wear level see Breaker Monitor on page 8 2 BCWB B phase breaker contact wear has reached 100 wear level see Breaker Monitor on page 8 2 BCWC C phase breaker contact wear has reached 100 wear level see Breaker Monitor on page 8 2 FIDEN Fault Identification Logic Enabled Internal control FSA A...

Page 317: ... contact assignment 50QF Forward direction negative sequence overcurrent threshold exceeded see Figure 4 5 Figure 4 6 and Figure 4 14 Directional threshold 50QR Reverse direction negative sequence overcurrent threshold exceeded see Figure 4 5 Figure 4 6 and Figure 4 14 50GF Forward direction residual ground overcurrent threshold exceeded see Figure 4 5 and Figure 4 7 50GR Reverse direction residua...

Page 318: ...e Figure 7 1 IN103 Optoisolated input IN103 asserted see Figure 7 1 IN102 Optoisolated input IN102 asserted see Figure 7 1 IN101 Optoisolated input IN101 asserted see Figure 7 1 24 ALARM ALARM output contact indicating that relay failed or PULSE ALARM command executed see Figure 7 27 Relay output status Control OUT107 Output contact OUT107 asserted see Figure 7 27 OUT106 Output contact OUT106 asse...

Page 319: ... overcur rent element derived from 50G2 see Figure 3 22 67G2T Level 2 residual ground definite time overcurrent element 67G2T timed out derived from 67G2 see Figure 3 22 50G3 Level 3 residual ground instantaneous overcurrent element resid ual ground current above pickup setting 50G3P see Figure 3 22 67G3 Level 3 torque controlled residual ground instantaneous overcur rent element derived from 50G3...

Page 320: ... Reclosing Relay on page 6 11 RSTMN Reset timer is timing see Reclosing Relay on page 6 11 PMDOK Phasor Measurement Data OK see Synchrophasor Relay Word Bits on page G 11 31 79RS Reclosing relay in the Reset State see Figure 6 5 and Table 6 1 79CY Reclosing relay in the Reclose Cycle State see Figure 6 5 79LO Reclosing relay in the Lockout State see Figure 6 5 SH0 Reclosing relay shot counter 0 se...

Page 321: ...sitive Sequence current above threshold to enable OOS logic see Figure 3 17 Indication 35 X5ABC Zone 5 out of step distance element instantaneous see Figure 3 17 Testing X6ABC Zone 6 out of step distance element instantaneous see Figure 3 17 OSB Out of step block condition declaration see Figure 3 18 OSB1 Out of step Block Zone 1 see Figure 3 18 OSB2 Out of step Block Zone 2 see Figure 3 18 OSB3 O...

Page 322: ...nce instantaneous overvoltage element zero sequence voltage above pickup setting 59N2P see Figure 3 28 38 50Q3a Level 3 negative sequence instantaneous overcurrent element negative sequence current above pickup setting 50Q3P see Figure 3 23 67Q3 Level 3 torque controlled negative sequence instantaneous overcur rent element derived from 50Q3 see Figure 3 23 67Q3T Level 3 torque controlled negative ...

Page 323: ...ogic see Figure 5 7 UBB1 Unblocking block 1 from DCUB logic see Figure 5 10 UBB2 Unblocking block 2 from DCUB logic see Figure 5 10 UBB Unblocking block to trip logic see Figure 5 11 WFC Weak infeed condition detected PT Permissive trip signal to POTT logic see Figure 5 5 PTRX1 Permissive trip 2 signal from DCUB logic see Figure 5 10 PTRX2 Permissive trip 2 signal from DCUB logic see Figure 5 10 4...

Page 324: ... 7 28 OUT205 Output contact OUT205 asserted see Figure 7 28 OUT206 Output contact OUT206 asserted see Figure 7 28 OUT207 Output contact OUT207 asserted see Figure 7 28 OUT208 Output contact OUT208 asserted see Figure 7 28 45 OUT209 Output contact OUT209 asserted see Figure 7 28 OUT210 Output contact OUT2010 asserted see Figure 7 28 OUT211 Output contact OUT2011 asserted see Figure 7 28 OUT212 Outp...

Page 325: ... Channel B received bit 7 RMB6B Channel B received bit 6 RMB5B Channel B received bit 5 RMB4B Channel B received bit 4 RMB3B Channel B received bit 3 RMB2B Channel B received bit 2 RMB1B Channel B received bit 1 50 TMB8B Channel B transmit bit 8 TMB7B Channel B transmit bit 7 TMB6B Channel B transmit bit 6 TMB5B Channel B transmit bit 5 TMB4B Channel B transmit bit 4 TMB3B Channel B transmit bit 3...

Page 326: ...tage element for frequency element blocking any phase voltage below pickup setting 27B81P see Figure 3 33 53 81D1T Level 1 definite time frequency element 81D1T timed out derived from 81D1 see Figure 3 34 Tripping Control 81D2T Level 2 definite time frequency element 81D2T timed out derived from 81D2 see Figure 3 34 81D3T Level 3 definite time frequency element 81D3T timed out derived from 81D3 se...

Page 327: ...e following characters 0 9 A Z space These two settings cannot be made via the front panel interface Current Transformer Ratios Refer to Relay Settings Serial Port Command SET and Front Panel Phase and polarizing current transformer ratios are set independently Line Settings Refer to Relay Settings Serial Port Command SET and Front Panel Line impedance settings Z1MAG Z1ANG Z0MAG and Z0ANG are used...

Page 328: ...er of settings that need to be made Each setting subgroup on Settings Sheets 2 15 has a reference back to the controlling enable setting For example the residual time overcurrent element settings on Settings Sheet 8 settings 51GP through 51GRS are controlled by enable setting E51G Other System Parameters Refer to Global Settings Serial Port Command SET G and Front Panel on page SET 22 The global s...

Page 329: ...gs Sheets The settings sheets that follow include the definition and input range for each setting in the relay Refer to Relay Element Settings Ranges and Accuracies on page 1 11 for information on 5 A nominal and 1 A nominal ordering options and how they influence overcurrent element setting ranges ...

Page 330: ...This page intentionally left blank ...

Page 331: ...00 10000 00 PTR Synchronism Voltage VS Potential Transformer Ratio 1 00 10000 00 PTRS Line Settings See Settings Explanations on page 9 33 Positive sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z1MAG Positive sequence line impedance angle 5 00 90 00 degrees Z1ANG Zero sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00...

Page 332: ...1 E32 Out of Step Y N see Figure 3 18 EOOS Load encroachment Y N see Figure 4 3 ELOAD Switch onto fault Y N see Figure 5 3 ESOTF Voltage elements Y N see Figure 3 27 Figure 3 28 Figure 3 29 and Figure 3 30 EVOLT Synchronism check Y N see Figure 3 30 and Figure 3 31 E25 Frequency elements N 1 6 see Figure 3 33 and Figure 3 34 E81 Fault location Y N see Table 12 1 and Fault Location on page 12 5 EFL...

Page 333: ...e to phase current FD Setting is active when advanced user setting enable EADVS Y Otherwise setting is made automatically 0 5 170 00 A secondary 5 A nom 0 1 34 00 A secondary 1 A nom see Figure 3 5 50PP2 Zone 3 phase to phase current FD Setting is active when advanced user setting enable EADVS Y Otherwise setting is made automatically 0 5 170 00 A secondary 5 A nom 0 1 34 00 A secondary 1 A nom se...

Page 334: ...nom see Figure 3 12 RG3 Zone 4 resistance 0 05 50 00 Ω secondary 5 A nom 0 25 250 00 Ω secondary 1 A nom see Figure 3 12 RG4 Quadrilateral ground polarizing quantity I2 IG Setting is active when advanced user setting enable EADVS Y Otherwise setting is made automatically see Figure 3 10 Figure 3 12 XGPOL Non homogenous correction angle 45 0 to 45 0 Setting is active when advanced user setting enab...

Page 335: ...0 1 20 00 A secondary 1 A nom see Figure 3 9 and Figure 3 12 50GZ3 Zone 4 residual current FD Setting is active when advanced user setting enable EADVS Y Otherwise setting is made automatically 0 5 100 00 A secondary 5 A nom 0 1 20 00 A secondary 1 A nom see Figure 3 9 and Figure 3 12 50GZ4 Zero Sequence Compensation ZSC Settings see Ground Distance Elements on page 3 10 Zone 1 ZSC factor magnitud...

Page 336: ...elay OFF 0 16000 cycles Z4D Phase Inst Def Time Overcurrent Elements See Figure 3 19 Number of phase element pickup settings dependent on preceding enable setting E50P 1 3 Level 1 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50P1P Level 2 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50P2P Level 3 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary...

Page 337: ...nce Overcurrent Elements for information on setting negative sequence overcurrent elements Number of negative sequence element time delay settings dependent on preceding enable setting E50Q 1 4 Level 1 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50Q1P Level 2 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50Q2P Level 3 OFF 0 25 100 00 A secondary 5 A nom ...

Page 338: ...rough Figure 9 10 51GC Time Dial 0 50 15 00 for curves U1 U5 0 05 1 00 for curves C1 C5 51GTD Electromechanical Reset Y N 51GRS Negative Sequence Time Overcurrent Element See Figure 3 26 See Appendix F Setting Negative Sequence Overcurrent Elements for information on setting negative sequence overcurrent elements Make the following settings if preceding enable setting E51Q Y Pickup OFF 0 25 16 00 ...

Page 339: ...A nom X1B5 Zone 6 resistance Left Setting is active when advanced user setting enable EADVS Y Otherwise setting is made automatically 70 00 to 0 05 Ω secondary 5 A nom 350 00 to 0 25 Ω secondary 1 A nom R1L6 Zone 5 resistance Left Setting is active when advanced user setting enable EADVS Y Otherwise setting is made automatically 70 00 to 0 05 Ω secondary 5 A nom 350 00 to 0 25 Ω secondary 1 A nom ...

Page 340: ...ondary 1 A nom Z2R Forward directional 3I2 pickup 0 25 5 00 A secondary 5 A nom 0 05 1 00 A secondary 1 A nom 50QFP Reverse directional 3I2 pickup 0 25 5 00 A secondary 5 A nom 0 05 1 00 A secondary 1 A nom 50QRP Positive sequence current restraint factor I2 I1 0 02 0 50 unitless a2 Zero sequence current restraint factor I2 I0 0 10 1 20 unitless k2 Make settings 50GFP 50GRP and a0 if preceding ena...

Page 341: ... 59V1P Channel VS undervoltage pickup OFF 0 0 150 0 V secondary 27SP Channel VS overvoltage pickup OFF 0 0 150 0 V secondary 59SP Phase to phase undervoltage pickup OFF 0 0 260 0 V secondary 27PP Phase to phase overvoltage pickup OFF 0 0 260 0 V secondary 59PP Synchronism Check Elements See Figure 3 30 and Figure 3 31 Make the following settings if preceding enable setting E25 Y Voltage window low...

Page 342: ...Reclosing Relay See Table 6 2 and Table 6 3 Make the following settings if preceding enable setting E79 1 4 Open interval 1 time 0 00 999999 00 cycles in 0 25 cycle steps 79OI1 Open interval 2 time 0 00 999999 00 cycles in 0 25 cycle steps 79OI2 Open interval 3 time 0 00 999999 00 cycles in 0 25 cycle steps 79OI3 Open interval 4 time 0 00 999999 00 cycles in 0 25 cycle steps 79OI4 Reset time from ...

Page 343: ...ttings See Figure 5 10 Make the following settings if preceding enable setting ECOMM DCUB1 or DCUB2 Guard present security time delay 0 00 16000 00 cycles in 0 25 cycle steps GARD1D DCUB disabling time delay 0 25 16000 00 cycles in 0 25 cycle steps UBDURD DCUB duration time delay 0 00 16000 00 cycles in 0 25 cycle steps UBEND Channel A MIRRORED BITS Settings These settings are available when a Ser...

Page 344: ...OL Time constant 5 10 15 30 60 minutes DMTC Phase pickup OFF 0 50 16 00 A secondary 5 A nom 0 10 3 20 A secondary 1 A nom PDEMP Residual ground pickup OFF 0 50 16 00 A secondary 5 A nom 0 10 3 20 A secondary 1 A nom GDEMP Negative sequence pickup OFF 0 50 16 00 A secondary 5 A nom 0 10 3 20 A secondary 1 A nom QDEMP Other Settings Minimum trip duration time 2 00 16000 00 cycles in 0 25 cycle steps...

Page 345: ...n 0 25 cycle steps SV7DO SV8 Pickup Time 0 00 16000 00 cycles in 0 25 cycle steps SV8PU SV8 Dropout Time 0 00 16000 00 cycles in 0 25 cycle steps SV8DO SV9 Pickup Time 0 00 16000 00 cycles in 0 25 cycle steps SV9PU SV9 Dropout Time 0 00 16000 00 cycles in 0 25 cycle steps SV9DO SV10 Pickup Time 0 00 16000 00 cycles in 0 25 cycle steps SV10PU SV10 Dropout Time 0 00 16000 00 cycles in 0 25 cycle ste...

Page 346: ... conditions TR Communications assisted trip conditions TRCOMM Switch onto fault trip conditions TRSOTF Direct transfer trip conditions DTT Unlatch trip conditions ULTR Communications Assisted Trip Scheme Input Equations Permissive trip 1 used for ECOMM POTT DCUB1 or DCUB2 see Figure 5 5 Figure 5 7 and Figure 5 10 PT1 Loss of guard 1 used for ECOMM DCUB1 or DCUB2 see Figure 5 10 LOG1 Permissive tri...

Page 347: ...h Bit LT2 RST2 Set Latch Bit LT3 SET3 Reset Latch Bit LT3 RST3 Set Latch Bit LT4 SET4 Reset Latch Bit LT4 RST4 Set Latch Bit LT5 SET5 Reset Latch Bit LT5 RST5 Set Latch Bit LT6 SET6 Reset latch Bit LT6 RST6 Set Latch Bit LT7 SET7 Reset Latch Bit LT7 RST7 Set Latch Bit LT8 SET8 Reset Latch Bit LT8 RST8 Set Latch Bit LT9 SET9 Reset Latch Bit LT9 RST9 Set Latch Bit LT10 SET10 Reset Latch Bit LT10 RST...

Page 348: ... 22 67G3TC Level 4 residual ground see Figure 3 22 67G4TC Level 1 negative sequence see Figure 3 23 67Q1TC Level 2 negative sequence see Figure 3 23 67Q2TC Level 3 negative sequence see Figure 3 23 67Q3TC Level 4 negative sequence see Figure 3 23 67Q4TC Torque Control Equations for Time Overcurrent Elements Note torque control equation settings cannot be set directly to logical 0 Phase see Figure ...

Page 349: ...on Variable SV15 SV15 SELOGIC control equation Variable SV16 SV16 Output Contact Equations See Figure 7 27 Output Contact OUT101 OUT101 Output Contact OUT102 OUT102 Output Contact OUT103 OUT103 Output Contact OUT104 OUT104 Output Contact OUT105 OUT105 Output Contact OUT106 OUT106 Output Contact OUT107 OUT107 Output Contact Equations Extra I O Board See Figure 7 28 Output Contact OUT201 OUT201 Outp...

Page 350: ...isplay Point DP11 DP11 Display Point DP12 DP12 Display Point DP13 DP13 Display Point DP14 DP14 Display Point DP15 DP15 Display Point DP16 DP16 Setting Group Selection Equations See Table 7 4 Select Setting Group 1 SS1 Select Setting Group 2 SS2 Select Setting Group 3 SS3 Select Setting Group 4 SS4 Select Setting Group 5 SS5 Select Setting Group 6 SS6 Other Equations Event report trigger conditions...

Page 351: ...BITS Transmit Equations See Appendix J MIRRORED BITS Communications Channel A transmit bit 1 TMB1A Channel A transmit bit 2 TMB2A Channel A transmit bit 3 TMB3A Channel A transmit bit 4 TMB4A Channel A transmit bit 5 TMB5A Channel A transmit bit 6 TMB6A Channel A transmit bit 7 TMB7A Channel A transmit bit 8 TMB8A Channel B transmit bit 1 TMB1B Channel B transmit bit 2 TMB2B Channel B transmit bit...

Page 352: ...me out occurs and display remains on last display screen e g continually display metering Front panel display update rate 1 60 seconds SCROLD Event Report Parameters See Section 12 Standard Event Reports and SER Length of event report 15 30 60 180 cycles LER Length of pre fault in event report 1 14 cycles in 1 cycle steps for LER 15 1 29 cycles in 1 cycle steps for LER 30 1 59 cycles in 1 cycle st...

Page 353: ... steps IN204D Input IN205 debounce time 0 00 2 00 cycles in 0 25 cycle steps IN205D Input IN206 debounce time 0 00 2 00 cycles in 0 25 cycle steps IN206D Input IN207 debounce time 0 00 2 00 cycles in 0 25 cycle steps IN207D Input IN208 debounce time 0 00 2 00 cycles in 0 25 cycle steps IN208D Breaker Monitor Settings See Breaker Monitor on page 8 2 Breaker monitor enable Y N EBMON Make the followi...

Page 354: ...l Date Code 20060320 Date________________ Make the following settings if preceding enable setting EPMU Y PMU Hardware ID PMID Phasor Data Set Voltages V1 ALL PHDATAV Voltage Angle Comp Factor 179 99 to 180 degrees VCOMP Phasor Data Set Currents ALL NA PHDATAI Current Angle Comp Factor 179 99 to 180 deg ICOMP Time Source Type IRIG IEEE TS_TYPE ...

Page 355: ...uential Events Recorder Settings Serial Port Command SET R Sequential Events Recorder settings are comprised of three trigger lists Each trigger list can include up to 24 Relay Word bits delimited by commas Enter NA to remove a list of these Relay Word bit settings See Sequential Events Recorder SER Report on page 12 28 SER Trigger List 1 SER1 SER Trigger List 2 SER2 SER Trigger List 3 SER3 ...

Page 356: ... SLB2 Pulse Local Bit LB2 Label 7 characters PLB2 Local Bit LB3 Name 14 characters NLB3 Clear Local Bit LB3 Label 7 characters CLB3 Set Local Bit LB3 Label 7 characters SLB3 Pulse Local Bit LB3 Label 7 characters PLB3 Local Bit LB4 Name 14 characters NLB4 Clear Local Bit LB4 Label 7 characters CLB4 Set Local Bit LB4 Label 7 characters SLB4 Pulse Local Bit LB4 Label 7 characters PLB4 Local Bit LB5 ...

Page 357: ...10 Local Bit LB11 Name 14 characters NLB11 Clear Local Bit LB11 Label 7 characters CLB11 Set Local Bit LB11 Label 7 characters SLB11 Pulse Local Bit LB11 Label 7 characters PLB11 Local Bit LB12 Name 14 characters NLB12 Clear Local Bit LB12 Label 7 characters CLB12 Set Local Bit LB12 Label 7 characters SLB12 Pulse Local Bit LB12 Label 7 characters PLB12 Local Bit LB13 Name 14 characters NLB13 Clear...

Page 358: ...lay if DP3 logical 0 16 characters DP3_0 Display if DP4 logical 1 16 characters DP4_1 Display if DP4 logical 0 16 characters DP4_0 Display if DP5 logical 1 16 characters DP5_1 Display if DP5 logical 0 16 characters DP5_0 Display if DP6 logical 1 16 characters DP6_1 Display if DP6 logical 0 16 characters DP6_0 Display if DP7 logical 1 16 characters DP7_1 Display if DP7 logical 0 16 characters DP7_0...

Page 359: ...16 characters DP14_1 Display if DP14 logical 0 16 characters DP14_0 Display if DP15 logical 1 16 characters DP15_1 Display if DP15 logical 0 16 characters DP15_0 Display if DP16 logical 1 16 characters DP16_1 Display if DP16 logical 0 16 characters DP16_0 Reclosing Relay Labels See Functions Unique to the Front Panel Interface on page 11 6 Reclosing Relay Last Shot Label 14 characters 79LL Reclosi...

Page 360: ...le when PROTO SEL or LMD Set T_OUT to the number of minutes of serial port inactivity for an automatic log out Set T_OUT 0 for no port time out T_OUT DTA Meter Format Y N Set DTA Y to allow an SEL DTA or SEL DTA2 to communicate with the relay This setting is available when PROTO SEL or LMD DTA Send Auto Messages to Port Y N This setting is available when PROTO SEL or LMD Set AUTO Y to allow automa...

Page 361: ...o confirm 1 15 DRETRY Data Link Time out interval seconds 0 5 DTIMEO Minimum Delay from DCD to transmission seconds 0 00 1 00 MINDLY Maximum Delay from DCD to transmission seconds 0 00 1 00 MAXDLY Transmission delay from RTS assertion seconds OFF 0 00 30 00 PREDLY Post transmit RTS deassertion delay seconds 0 00 30 00 PSTDLY Analog reporting dead band counts 0 32767 ANADB Allow Unsolicited Reporti...

Page 362: ...RMB_ Pickup Debounce msgs 1 8 RMB7PU MIRRORED BITS RMB_ Dropout Debounce msgs 1 8 RMB7DO MIRRORED BITS RMB_ Pickup Debounce msgs 1 8 RMB8PU MIRRORED BITS RMB_ Dropout Debounce msgs 1 8 RMB8DO MIRRORED BITS Transmit Identifier 1 4 This setting is unavailable if PROTO is set to MBGA or MBGB TXID MIRRORED BITS Receive Default State string of 1s 0s or Xs 87654321 RXDFLT MIRRORED BITS RMB_ Pickup Debou...

Page 363: ...SEL 2100 Logic Processor SEL DTA2 Display Transducer Adapter You can use a variety of terminal emulation programs on your personal computer to communicate with the relay Examples of PC based terminal emulation programs include the following CROSSTALK Microsoft Windows Terminal and HyperTerminal ProComm Plus Relay Gold SmartCOM For the best display use VT 100 terminal emulation or the closest varia...

Page 364: ...Port 2 and vice versa The following cable diagrams show several types of EIA 232 serial communications cables that connect the SEL 311C to other devices SEL provides fiber optic transceivers and cable for communications links with improved safety noise immunity and distance as compared to copper links The equivalent fiber cables are listed following each copper cable description These and other ca...

Page 365: ...311C to Computer SEL 311C to Modem or Other DCE SEL 311C Relay 9 Pin Male D Subconnector 9 Pin Female D Subconnector 2 3 5 8 3 2 5 8 7 1 4 6 RXD TXD GND CTS TXD RXD GND CTS RTS DCD DTR DSR Pin Func Pin Func Pin Pin Cable SEL C234A 9 Pin DTE Device DTE Data Terminal Equipment Computer Terminal Printer etc SEL 311C Relay 9 Pin Male D Subconnector 25 Pin Female D Subconnector 5 3 2 9 8 7 3 2 1 4 5 6 ...

Page 366: ...r 9 Pin Male D Subconnector 2 3 5 7 8 3 2 5 7 8 RXD TXD GND RTS CTS TXD RXD GND RTS CTS Pin Func Pin Func Pin Pin Cable SEL C272A SEL 311C Relay Table 10 3 Serial Communications Port Pin Terminal Function Definitions Pin Function Definition N C No Connection 5 Vdc 0 5 A limit 5 Vdc Power Connection RXD RX Receive Data TXD TX Transmit Data IRIG B IRIG B Time Code Input GND Ground SHIELD Grounded Sh...

Page 367: ...l Port Communications and Commands Port Connector and Communications Cables For communications up to 80 kilometers and for electrical isolation of communications ports use the SEL 2800 family of fiber optic transceivers Contact SEL for more details on these devices ...

Page 368: ... with the SEL DTA2 Display Transducer Adapter See Port Settings Serial Port Command SET P and Front Panel on page SET 30 To select SEL ASCII protocol set the port PROTO setting to SEL To select SEL Distributed Port Switch Protocol LMD set PROTO LMD To select DNP protocol set PROTO DNP SEL Fast Meter and SEL Compressed ASCII commands are active when PROTO is set to either SEL or LMD The commands ar...

Page 369: ...e at the end of the message in progress when XOFF is received and may resume when the relay sends XON 4 You can use the XON XOFF protocol to control the relay during data transmission When the relay receives XOFF during transmission it pauses until it receives an XON character If there is no message in progress when the relay receives XOFF it blocks transmission of any message presented to its buf...

Page 370: ...ASCII commands The protocol is described in Appendix E Compressed ASCII Commands Distributed Network Protocol DNP3 The relay provides Distributed Network Protocol DNP3 slave support DNP is an optional protocol and is described in Appendix I DNP Communications MIRRORED BITS Communications The SEL 311C supports MIRRORED BITS relay to relay communications on two ports simultaneously See Appendix J MI...

Page 371: ...ducer Adapter Table 10 4 Serial Port Automatic Messages Condition Description Power Up The relay sends a message containing the present date and time Relay and Terminal Identifiers and the Access Level 0 prompt when the relay is turned on Event Trigger The relay sends an event summary each time an event report is triggered See Section 12 Standard Event Reports and SER Group Switch The relay displa...

Page 372: ...ACC Enter The ACC command takes the relay to Access Level 1 see ACC Command Go to Access Level 1 on page 10 14 and 2AC and BAC Commands on page 10 15 for more detail Access Level 1 When the relay is in Access Level 1 the relay sends the following prompt Commands 2AC through TRI in Table 10 5 are available from Access Level 1 For example enter the MET command at the Access Level 1 prompt to view me...

Page 373: ... CLO Enter While the relay is in Access Level B any of the Access Level 1 and Access Level 0 commands are also available commands ACC through TRI in Table 10 5 The 2AC command allows the relay to go to Access Level 2 Enter the 2AC command at the Access Level B prompt 2AC Enter Access Level 2 When the relay is in Access Level 2 the relay sends the prompt Commands CON through VER in Table 10 5 are a...

Page 374: ...ccess Level 2 commands primarily allow the user to change relay settings Again a higher access level can access the serial port commands in a lower access level The commands are shown in uppercase letters but they can also be entered with lowercase letters Table 10 5 Serial Port Command Summary Sheet 1 of 2 Access Level Prompt Serial Port Command Command Description Corresponding Front Panel Pushb...

Page 375: ... 2 LOO Enable loopback testing of MIRRORED BITS channels 2 PAS View change passwords SET 2 SET Change settings SET 2 VER Display version and configuration information Table 10 5 Serial Port Command Summary Sheet 2 of 2 Access Level Prompt Serial Port Command Command Description Corresponding Front Panel Pushbutton SEL 311C Response Definition SEL 311C POTT This is the RID setting the relay is ship...

Page 376: ...ge Passwords on page 10 38 for more information on passwords The factory default passwords for Access Levels 1 B and 2 are Access Level Attempt Password Required Assume the following conditions Password jumper OFF not in place Access Level 0 At the Access Level 0 prompt enter the ACC command ACC Enter Because the Password jumper is not in place the relay asks for the Access Level 1 password to be ...

Page 377: ...command ACC Enter Because the Password jumper is in place the relay does not ask for a password it goes directly to Access Level 1 The relay responds SEL 311C POTT Date 10 12 99 Time 16 22 04 372 EXAMPLE BUS B BREAKER 3 Level 1 The prompt indicates the relay is now in Access Level 1 The above two examples demonstrate how to go from Access Level 0 to Access Level 1 The procedure to go from Access L...

Page 378: ...s performance data For more information on MIRRORED BITS see Appendix J MIRRORED BITS Communications To get a summary report enter the COM command with the channel parameter A or B COM A Enter SEL 311C POTT Date 10 12 99 Time 16 24 01 623 EXAMPLE BUS B BREAKER 3 FID SEL 311C R100 V0 Z001001 D19991118 CID FF27 Summary for Mirrored Bits channel A For 10 05 99 18 36 09 279 to 10 10 99 18 36 11 746 To...

Page 379: ...0 L Enter To display all the COMM records that started on a particular day supply that date as a parameter i e COM 2 8 98 L Enter To display all the COMM records that started between a range of dates supply both dates as parameters i e COM 2 21 98 2 7 98 L Enter Reversing the order of the dates will reverse the order of the records in the report To receive a summary report for a subset of the reco...

Page 380: ...r the relay displays the most recent event summaries in reverse chronological order If x is the letter E HIS E Enter the relay displays the most recent event summaries in reverse chronological order The leading number is a unique event identifier between 1 and 32767 that can be used with the SUM or CSU commands to view event summaries for that event If x is a number HIS x Enter the relay displays ...

Page 381: ...report a T is appended to the event type e g AG T If the fault locator is disabled or does not run successfully is listed in the LOCAT column For either of these cases where the fault locator does not run the event type listed in the EVENT column is one of the following The TARGETS column will display any of the following illuminated front panel target LEDs if the event report is generated by a tr...

Page 382: ...or if the code cannot be read successfully the relay responds IRIG B DATA ERROR If an IRIG B signal is present the relay synchronizes its internal clock with IRIG B It is not necessary to issue the IRI command to synchronize the relay clock with IRIG B Use the IRI command to determine if the relay is properly reading the IRIG B signal In addition the Relay Word bit TIRIG logical 1 when the relay i...

Page 383: ... 11 695 V ANG DEG 0 00 119 79 120 15 0 05 A B C 3P MW 2 259 2 228 2 288 6 774 MVAR 0 319 0 322 0 332 0 973 PF 0 990 0 990 0 990 0 990 LAG LAG LAG LAG I1 3I2 3I0 V1 V2 3V0 MAG 195 283 4 630 4 880 11 682 0 007 0 056 ANG DEG 8 06 103 93 81 22 0 12 80 25 65 83 FREQ Hz 60 00 VDC V 129 5 Currents IA B C P IG Input currents A primary Residual ground current A primary IG 3I0 IA IB IC Voltages VA B C S Wye...

Page 384: ...238 LAST PEAK RESET 01 27 97 15 31 56 239 Reset the accumulated demand values using the MET RD command Reset the peak demand values using the MET RP command For more information on demand metering see Demand Metering on page 8 20 MET E Energy Metering The MET E command displays the following quantities To view energy metering values enter the command MET E Enter Currents IA B C IG 3I2 Input curren...

Page 385: ... 195 0 10 01 99 15 05 19 558 31 8 10 01 99 14 50 55 536 IC A 200 4 10 01 99 15 00 42 578 52 2 10 01 99 14 51 02 332 IP A 42 6 10 01 99 14 51 02 328 42 6 10 01 99 14 51 02 328 IG A 42 0 10 01 99 14 50 55 294 42 0 10 01 99 14 50 55 294 VA kV 11 7 10 01 99 15 01 01 576 3 4 10 01 99 15 00 42 545 VB kV 11 7 10 01 99 15 00 42 937 2 4 10 01 99 15 00 42 541 VC kV 11 7 10 01 99 15 00 42 578 3 1 10 01 99 15...

Page 386: ... truncated If the TSOK relay word bit is not set when at the specified trigger time the relay responds Aborted Relay word bit TSOK is not set When valid time parameters are entered the relay responds Synchronized Phasor Measurement Data Will be Displayed at hh mm ss 000 One MET PM time command may be pending on a single port at any one time If a MET PM time command is entered while another command...

Page 387: ...mand to view relay settings SELOGIC control equations global settings serial port settings sequential events recorder SER settings and text label settings Below are the SHO command options You may append a setting name to each of the commands to specify the first setting to display e g SHO 1 E50P displays the setting Group 1 relay settings starting with setting E50P The default is the first settin...

Page 388: ...D Y ESOTF Y EVOLT N E25 N E81 N EFLOC Y ELOP Y ECOMM POTT E79 N EZ1EXT N ECCVT N ESV N ELAT 16 EDP 16 EDEM THM EADVS N Z1P 6 24 Z2P 9 36 Z3P 1 87 50PP1 0 50 Z1MG 6 24 Z2MG 9 36 Z3MG 1 87 XG1 6 24 XG2 9 36 XG3 1 87 Press RETURN to continue RG1 2 50 RG2 5 00 RG3 6 00 50L1 0 50 50GZ1 0 50 k0M1 0 726 k0A1 3 69 Z1PD OFF Z2PD 20 00 Z3PD OFF Z1GD OFF Z2GD 20 00 Z3GD OFF Z1D OFF Z2D OFF Z3D OFF 50P1P 11 2...

Page 389: ...52A IN101 CL CC ULCL TRIP SET1 0 RST1 0 SET2 0 RST2 0 SET3 0 RST3 0 SET4 0 RST4 0 Press RETURN to continue SET5 0 RST5 0 SET6 0 RST6 0 SET7 0 RST7 0 SET8 0 RST8 0 SET9 0 RST9 0 SET10 0 RST10 0 SET11 0 RST11 0 SET12 0 RST12 0 SET13 0 RST13 0 SET14 0 RST14 0 Press RETURN to continue SET15 0 RST15 0 SET16 0 RST16 0 67P1TC 1 51GTC 1 51QTC 1 OUT101 TRIP OUT102 TRIP OUT103 CLOSE OUT104 KEY OUT105 0 OUT1...

Page 390: ...32IV 1 SHO G Enter Global Settings TGR 180 00 NFREQ 60 PHROT ABC DATE_F MDY FP_TO 15 00 SCROLD 5 LER 15 PRE 4 DCLOP OFF DCHIP OFF IN101D 0 00 IN102D 0 00 IN103D 0 00 IN104D 0 00 IN105D 0 00 IN106D 0 00 IN201D 0 00 IN202D 0 00 IN203D 0 00 IN204D 0 00 IN205D 0 00 IN206D 0 00 IN207D 0 00 IN208D 0 00 EBMON N SHO P Enter Port F PROTO SEL SPEED 2400 BITS 8 PARITY N STOP 1 T_OUT 15 DTA N AUTO N RTSCTS N ...

Page 391: ... DP1_1 BREAKER CLOSED DP1_0 BREAKER OPEN Press RETURN to continue DP2_1 DP2_0 DP3_1 DP3_0 DP4_1 DP4_0 DP5_1 DP5_0 DP6_1 DP6_0 DP7_1 DP7_0 DP8_1 DP8_0 DP9_1 DP9_0 DP10_1 DP10_0 DP11_1 DP11_0 DP12_1 DP12_0 DP13_1 DP13_0 DP14_1 DP14_0 DP15_1 DP15_0 DP16_1 DP16_0 79LL 79SL STA Command Relay Self Test Status The STA command displays the status report showing the relay self test information To view a st...

Page 392: ...efinition FID FID is the firmware identifier string It identifies the firmware revision CID CID is the firmware checksum identifier OS OS Offset displays measured dc offset voltages in millivolts for the current and voltage channels The MOF master status is the dc offset in the A D circuit when a grounded input is selected PS PS Power Supply displays power supply voltages in Vdc for the power supp...

Page 393: ...CK n N ext Enter TAR Command Display Relay Element Status The TAR command displays the status of front panel target LEDs or relay elements whether they are asserted or deasserted The elements are represented as Relay Word bits and are listed in rows of eight called Relay Word rows The first two rows correspond to Table 10 10 All rows of the Relay Word are described in Section 9 Setting the Relay A...

Page 394: ...pe TIM and the desired setting then press Enter Separate the hours minutes and seconds with colons semicolons spaces commas or slashes To set the clock to 11 30 PM enter TIM 23 30 00 Enter 23 30 00 Table 10 9 TAR Command Options TAR n k Shows Relay Word row number n 0 51 k is an optional parameter to specify the number of times 1 32767 to repeat the Relay Word row display If k is not specified the...

Page 395: ...tered without the time parameter will not affect any pending TRI time commands The following shows the output from an SEL 311C Triggered If the serial port AUTO setting Y the relay sends the summary event report SEL 311C POTT Date 10 13 99 Time 10 12 45 627 EXAMPLE BUS B BREAKER 3 Event TRIG Location Trip Time 00002 Shot Freq 60 00 Group 1 Close Time Targets Breaker Open PreFault IA IB IC IP IG 3I...

Page 396: ...kA Ext Trips 3 IA 0 8 IB 0 8 IC 1 1 kA Percent wear A 25 B 28 C 24 LAST RESET 00 00 00 00 00 00 Use the BRE R command to reset the breaker monitor BRE R Enter Reset Trip Counters and Accumulated Currents Wear Are you sure Y N Y Enter SEL 311C POTT Date 10 13 99 Time 10 12 45 627 EXAMPLE BUS B BREAKER 3 Rly Trips 0 IA 0 0 IB 0 0 IC 0 0 kA Ext Trips 0 IA 0 0 IB 0 0 IC 0 0 kA Percent wear A 0 B 0 C 0...

Page 397: ...e Y N Y Enter Changing Active Group 2 The relay switches to Group 2 and pulses the ALARM contact If the serial port AUTO setting Y the relay sends the group switch report SEL 311C POTT Date 10 13 99 Time 10 12 45 627 EXAMPLE BUS B BREAKER 3 Active Group 2 If any of the SELOGIC control equations settings SS1 through SS6 are asserted to logical 1 the active setting group may not be changed with the ...

Page 398: ...per see Table 2 4 If the Breaker jumper is not in place Breaker jumper OFF the relay does not execute the OPE command and responds Aborted No Breaker Jumper PUL Command Pulse Output Contact The PUL command allows you to pulse any of the output contacts for a specified length of time The command format is PUL x y To pulse OUT101 for 5 seconds PUL OUT101 5 Enter Are you sure Y N Y Enter If the respo...

Page 399: ... SELOGIC control equation settings from setting Group m to setting Group n with the COP m n command Setting group numbers range from 1 to 6 After entering settings into one setting group with the SET and SET L commands copy them to the other groups with the COP command Use the SET and SET L commands to modify the copied settings The ALARM output pulses if you copy settings into the active group Fo...

Page 400: ...ter To allow the looped back data to modify the RMB values include the DATA parameter LOO 10 DATA Enter Loopback will be enabled on Mirrored Bits channel A for the next 10 minutes The RMB values will be allowed to change while loopback is enabled Are you sure Y N N Enter Canceled To disable looped back mode before the selected number of minutes re issue the LOO command with the R parameter If both...

Page 401: ...12345 If the passwords are lost or you want to operate the relay without password protection put the main board Password jumper in place Password jumper ON Refer to Table 2 4 for Password jumper information If you want to disable password protection for a specific access level even if Password jumper is not in place Password jumper OFF simply set the password to DISABLE For example PAS 1 DISABLE d...

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Page 403: ...LER 1 for raw event reports defaults to LER if not specified L 16 samples per cycle overridden by the Sx parameter if present R specifies raw unfiltered data defaults to 16 samples per cycle unless overridden by the Sx parameter Defaults to LER 1 cycles in length unless overridden with the Ly parameter C specifies 16 samples per cycle LER cycle length P precise to synchrophasor level accuracy CHIS...

Page 404: ...vel 0 Terminates SEL Distributed Port Switch Protocol LMD protocol connection Available in all access levels SER n Show the latest n rows in the Sequential Events Recorder SER event report SER m n Show rows m through n in the Sequential Events Recorder SER event report SER d1 Show rows in the Sequential Events Recorder SER event report from date d1 SER d1 d2 Show rows in the Sequential Events Reco...

Page 405: ... contacts All Access Level 1 and Access Level B commands are available from Access Level 2 The screen prompt is CON n Control Remote Bit RBn Remote Bit n n 1 through 8 Execute CON n and the relay responds CONTROL RBn Then reply with one of the following SRB n set Remote Bit n assert RBn CRB n clear Remote Bit n deassert RBn PRB n pulse Remote Bit n assert RBn for 1 4 cycle COP m n Copy relay and l...

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Page 407: ...h LCD Overview This section describes how to get information make settings and execute control operations from the relay front panel It also describes the default displays NOTE This section only applies to SEL 311C Relay models with an LCD Disregard this section for relays ordered with Targets Only no LCD ...

Page 408: ...al setting FP_TO in Global Settings Serial Port Command SET G and Front Panel on page SET 22 the relay is shipped with FP_TO 15 minutes q See Figure 11 4 Figure 11 1 SEL 311C Front Panel Pushbuttons Overview Primary Functions Note in Figure 11 2 and Figure 11 3 that the front panel pushbutton primary functions correspond to serial port commands both retrieve the same information or perform the sam...

Page 409: ...on passwords To enter the Access Level B and Access Level 2 passwords from the front panel if required use the left right arrow pushbuttons to underscore a password digit position Then use the up down arrow pushbuttons to change the digit Press the SELECT pushbutton once the correct Access Level B or Access Level 2 password is ready to enter The factory default passwords for Access Level 1 B and 2...

Page 410: ...rom the front panel t Local control is not available through the serial port and does not require the entry of a password Figure 11 3 SEL 311C Front Panel Pushbuttons Primary Functions Continued Secondary Functions After a primary function is selected see Figure 11 2 and Figure 11 3 the pushbuttons then revert to operating on their secondary functions see Figure 11 4 Use the left right arrows to u...

Page 411: ...ted again see Figure 11 2 and Figure 11 3 Figure 11 4 SEL 311C Front Panel Pushbuttons Secondary Functions Provides Help Screen Information When Viewing or Changing Settings with Pushbutton SET SELECT CANCEL Select Displayed Option or Setting EXIT Exit Entirely and Return to Default Display Function Description The front panel display gives indication of the arrow button to use Displays symbols Ca...

Page 412: ...o see the progression of the shot counter during reclosing relay testing Access the reclosing relay shot counter screen via the OTHER pushbutton The following screen appears Scroll right with the right arrow button and select function 79 Upon selecting function 79 the following screen appears shown here with demonstration settings or If the reclosing functions are disabled see Reclosing Relay on p...

Page 413: ...o the present shot value If the breaker is closed and the reclosing relay is reset RS LED on front panel is illuminated RECLOSE COUNT 0 If the breaker is open and the reclosing relay is locked out after a reclose sequence LO LED on front panel is illuminated RECLOSE COUNT 2 Reclosing Relay Shot Counter Screen Operation With the breaker closed and the reclosing relay in the reset state front panel ...

Page 414: ...r returns to 0 The reclosing relay shot counter screen appears as Local Control Use local control to enable disable schemes trip close breakers etc via the front panel In more specific terms local control asserts sets to logical 1 or deasserts sets to logical 0 what are called local bits LB1 LB16 These local bits are available as Relay Word bits and are used in SELOGIC control equations see Rows 5...

Page 415: ...xist i e corresponding switch position label settings were made the following message displays with the rotating default display messages Assume the following settings TR LB3 Trip setting includes LB3 CL LB4 Close setting includes LB4 NLB3 MANUAL TRIP CLB3 RETURN PLB3 TRIP NLB4 MANUAL CLOSE CLB4 RETURN PLB4 CLOSE Press the CNTRL pushbutton and the first set local control switch displays Press the ...

Page 416: ... MANUAL TRIP switch returns to the RETURN position after momentarily being in the TRIP position Technically the MANUAL TRIP switch being an OFF MOMENTARY type switch is in the TRIP position for one processing interval 1 4 cycle long enough to assert the corresponding local bit LB3 to logical 1 and then returns to the RETURN position local bit LB3 deasserts to logical 0 again On the display the MAN...

Page 417: ...utput LB1 is configured as an ON OFF type switch see Figure 11 5 Additionally suppose it is used to enable disable reclosing If local bit LB1 is at logical 1 reclosing is enabled If power to the relay is turned off and then turned on again local bit LB1 remains at logical 1 and reclosing is still enabled This is similar to a traditional panel where enabling disabling of reclosing and other functio...

Page 418: ...ault metering screen if at least one local control switch is operational It is a reminder of how to access the local control function See the preceding discussion in this section and Local Control Switches on page 7 7 for more information on local control If display point labels e g 79 DISABLED and BREAKER OPEN are enabled for display they also enter into the display rotation display time SCROLD R...

Page 419: ...l setting SCROLD for each screen The display point example settings are DP2 LB1 local bit LB1 DP4 IN101 optoisolated input IN101 Local bit LB1 is used as a recloser enable disable Optoisolated input IN101 is used as a circuit breaker status input a 52a circuit breaker auxiliary contact is connected to input IN101 see Optoisolated Inputs on page 7 3 RECLOSER 9 1 B C G TIME TRIP COMM ZONE LEVEL 1 2 ...

Page 420: ...LO 4 79 DISABLED BREAKER OPEN Press CNTRL for Local Control IA 50 IB 50 IC 50 DP2 LB1 logical 1 DP2_1 79 ENABLED DP2_0 79 DISABLED DP4_1 BREAKER CLOSED DP4_0 BREAKER OPEN DP4 IN101 logical 1 B C G TIME TRIP COMM ZONE LEVEL 1 2 3 FAULT TYPE A EN 79 ENABLED BREAKER CLOSED Press CNTRL for Local Control IA 50 IB 50 IC 50 DP2 LB1 logical 0 DP2_1 79 ENABLED DP2_0 79 DISABLED DP4_1 BREAKER CLOSED DP4_0 B...

Page 421: ...ontrol with the OTHER pushbutton Select LCD for Scroll Lock Control mode The rotating display will then appear and the scroll mode reminder screen will appear every eight seconds for one second as a reminder that the display is in Scroll Lock Control mode Stop Scrolling Lock When in the Scroll Lock Control mode press the SELECT key to stop display rotation Scrolling can be stopped on any of the di...

Page 422: ...ting Default Display Cancel Press the CANCEL key to return to the OTHER menu Additional Rotating Default Display Example See Figure 5 17 and accompanying text in Section 5 Trip and Target Logic for an example of resetting a rotating default display with the TARGET RESET pushbutton DATE TIME 79 TAR BRK_MON LCD ...

Page 423: ...s show information for 15 30 60 or 180 continuous cycles At least forty three 15 cycle twenty five 30 cycle thirteen 60 cycle or four 180 cycle reports are maintained if more reports are triggered the latest event report overwrites the oldest event report See Figure 12 3 for an example standard 15 cycle event report The relay adds lines in the sequential events recorder SER report for a change of ...

Page 424: ...P asserts Programmable SELOGIC control equation setting ER asserts TRI Trigger Event Reports serial port command executed Output contacts OUT101 OUT107 Models 311C00x and 311C01x pulsed via the serial port or front panel PUL Pulse output contact command Relay Word Bit TRIP Refer to Figure 5 1 If Relay Word bit TRIP asserts to logical 1 an event report is automatically generated Any trip condition ...

Page 425: ...TRI serial port command is to generate standard event reports primarily for testing purposes The PUL command asserts the output contacts for testing purposes or for remote control Additionally the relay triggers a standard event report if output contacts OUT101 OUT107 Models 311C00x and 311C01x assert via the PUL command the relay triggers a standard event report The PUL command is available at th...

Page 426: ...E BUS B BREAKER 3 Event BCG T Location 48 84 Trip Time 08 53 34 930 00008 Shot Freq 60 01 Group 1 Close Time Targets ZONE1 Breaker Closed PreFault IA IB IC IP IG 3I2 VA VB VC MAG A kV 199 200 201 0 2 0 131 500 131 610 131 730 ANG DEG 0 04 120 27 120 04 59 15 149 15 165 15 0 00 120 03 119 94 Fault MAG A kV 200 2478 2480 0 212 4294 131 570 113 930 113 980 ANG DEG 0 46 172 34 6 65 59 15 11 30 94 15 0...

Page 427: ...ttings Event Summary Number Unique event identifier of the event summary found in the HIS E command See Section 10 Serial Port Communications and Commands Shot Reclosing Shot Count at trigger time See Section 6 Close and Reclose Logic Frequency Sampling frequency at trigger time Group Active settings group at trigger time Trip and Close Times Trip and close times follow 52A Relay Word bit contact ...

Page 428: ...lements contact outputs and optoisolated inputs Communications and MIRRORED BITS elements Event summary Group SELOGIC control equations and global settings Use the EVE command to retrieve the reports There are several options to customize the report format The general command format is EVE n Sx Ly L R A D C M P where n Event number 1 to number of events stored corresponding to the number displayed...

Page 429: ...rement backwards in time The DT value for rows following the trigger point is referenced to the previous row so they increment forwards in time If TSOK logical 0 this event report display option is not available Figure 12 2 shows how an event report is modified with the P parameter M Specifies only that the communication elements section of the event is displayed P Precise to synchrophasor level a...

Page 430: ...23 981 650 383 9 51 103 6 121 2 15 3 0 0 1042 23 955 263 731 10 40 126 3 95 0 30 3 0 0 1041 23 811 85 936 9 40 130 2 49 7 81 6 0 0 1046 23 476 497 1022 10 49 114 6 3 0 111 9 0 0 98 4 0000 23 5 165 759 956 10 32 80 6 50 6 130 7 0 0 1040 23 283 955 726 10 54 35 8 90 7 128 2 0 0 1043 23 580 982 424 9 22 16 5 121 5 103 6 0 0 1038 23 881 847 17 9 51 64 0 131 3 69 7 0 0 87 0 1043 23 Figure 12 2 Example ...

Page 431: ...ved with the EVE command The columns contain ac current ac voltage station dc battery voltage and directional polarizing voltage V1Mem Current Voltage and Frequency Columns Table 12 3 summarizes the event report current voltage and frequency columns Note that the ac values change from positive to negative in Figure 12 3 indicating the sinusoidal nature of the waveforms NOTE Figure 12 3 is on multi...

Page 432: ...nt MAB4 set not ZAB1 or ZAB2 or ZAB3 ZPPb MPP1 MPP2 MPP3 MPP4 1 2 3 4 If Zone 1 phase phase distance element MPP1 set If Zone 2 phase phase distance element MPP2 set not ZPP1 If Zone 3 phase phase distance element MPP2 set not ZPP1 or ZPP2 If Zone 4 phase phase distance element MPP4 set not ZPP1 ZPP2 or ZPP3 ZBCa MBC1 MBC2 MBC3 MBC4 1 2 3 4 If Zone 1 BC phase phase distance element MBC1 set If Zon...

Page 433: ...chanical reset 50P 1 2 50P1 50P2 1 2 b 50P1 asserted 50P2 asserted both 50P1 and 50P2 asserted 50P 3 50P3 3 50P3 asserted 50G 1 2 50G1 50G2 1 2 b 50G1 asserted 50G2 asserted both 50G1 and 50G2 asserted 50G 3 4 50G3 50G4 3 4 b 50G3 asserted 50G4 asserted both 50G3 and 50G4 asserted 50Q 1 2 50Q1 50Q2 1 2 b 50Q1 asserted 50Q2 asserted both 50Q1 and 50Q2 asserted 50Q 3 4 50Q3 50Q4 3 4 b 50Q3 asserted ...

Page 434: ...tage element 27B picked up C C phase instantaneous undervoltage element 27C picked up a 27A and 27B elements picked up b 27B and 27C elements picked up c 27C and 27A elements picked up 3 27A 27B and 27C elements picked up 27 PP 27AB 27BC 27CA A AB phase to phase instantaneous undervoltage element 27AB picked up B BC phase to phase instantaneous undervoltage element 27BC picked up C CA phase to pha...

Page 435: ...ltage window element 59VS picked up used in synchronism check b Both 59VP and 59VS picked up 25 SF SF Slip frequency element SF picked up used in synchronism check 25 A 25A1 25A2 1 First synchronism check element 25A1 picked up 2 Second synchronism check element 25A2 picked up b Both 25A1 and 25A2 picked up 27B 27B81 Undervoltage element for frequency element blocking any phase asserted 81 1 2 81D...

Page 436: ...4 b Output contact OUT103 asserted Output contact OUT104 asserted Both OUT103 and OUT104 asserted Out1 5 6c OUT105d OUT106d 5 6 b Output contact OUT105 asserted Output contact OUT106 asserted Both OUT105 and OUT106 asserted Out1 7 Ac OUT107d ALARMd 7 A b Output contact OUT107 asserted Output contact ALARM asserted Both OUT107 and ALARM asserted Out2 1 2c OUT201e OUT202e 1 2 b Output contact OUT201...

Page 437: ...rted Optoisolated input IN208 asserted Both IN207 and IN208 asserted a This column is visible only when positive sequence polarized phase mho elements are enabled E21P does not contain C b This column is visible only when compensator distance mho elements are enabled E21P contains C c Output contacts can be A or B type contacts see Table 2 2 and Figure 7 27 and Figure 7 28 d Models 311C00x and 311...

Page 438: ...hannel A transmit bit 8 TMB8A asserted b Both TMB7A and TMB8A asserted RMB A 1 2 RMB1A RMB2A 1 MIRRORED BITS channel A receive bit 1 RMB1A asserted 2 MIRRORED BITS channel A receive bit 2 RMB2A asserted b Both RMB1A and RMB2A asserted RMB A 3 4 RMB3A RMB4A 3 MIRRORED BITS channel A receive bit 3 RMB3A asserted 4 MIRRORED BITS channel A receive bit 4 RMB4A asserted b Both RMB3A and RMB4A asserted R...

Page 439: ... ROKB A MIRRORED BITS channel A receive OK ROKA asserted B MIRRORED BITS channel B receive OK ROKB asserted b Both ROKA and ROKB asserted RBAD RBADA RBADB A MIRRORED BITS channel A extended outage RBADA asserted B MIRRORED BITS channel B extended outage RBADB asserted b Both RBADA and RBADB asserted CBAD CBADA CBADB A MIRRORED BITS channel A unavailability CBADA asserted B MIRRORED BITS channel B ...

Page 440: ..._ asserted timer timing on pickup time timer output SV_T not asserted SELOGIC control equation variable timer input SV_ asserted timer timed out on pickup time timer output SV_T asserted SELOGIC control equation variable timer input SV_ not asserted timer pre viously timed out on pickup time timer output SV_T remains asserted while timer timing on dropout time a Hexadecimal values are constructed ...

Page 441: ...arrow in the column following the V1Mem column identifies the trigger row This is the row that corresponds to the Date and Time values at the top of the event report The asterisk in the column following the V1Mem column identifies the row corresponding to the fault values listed in the event summary report See Currents and Voltages on page 12 6 The phase current is calculated from the row identifi...

Page 442: ...27 105 1538 1507 1 74 68 6 113 8 47 5 68 6 63 3 60 01 27 171 1940 1970 0 201 112 2 5 1 103 7 112 5 103 8 60 01 27 8 104 1539 1506 1 71 68 7 113 8 47 4 68 7 63 1 60 01 27 170 1941 1968 1 197 112 2 5 1 103 7 112 4 103 4 60 01 27 105 1540 1509 1 74 68 8 113 8 47 3 68 8 63 0 60 01 27 171 1939 1968 0 200 112 1 5 0 103 7 112 4 103 0 60 01 27 9 104 1543 1510 0 71 68 9 113 8 47 2 68 9 62 9 60 01 27 170 19...

Page 443: ...V o 1 V o 1 V o 1 4 V o 1 V 1 V p QQ 1 V pp QQ 1 5 1 V pp 1 QQ 1 b4 1 1 V pp 1 QQ 1 b4 1 1 V pp 1 QQ 1 b4 1 1 V pp 1 QQ 1 b4 1 6 1 V pp 1 QQ 1 b4 1 1 V pp 1 QQ 1 b4 1 1 V pp 1 QQ 1 b4 1 1 V pp 1 QQ 1 b4 1 7 1 V pp 1 QQ 1 b4 1 1 V pp 1 QQ 1 b4 1 1 V pp 1 QQ 1 b4 1 1 V pp 1 QQ 1 b4 1 8 1 V pp 1 QQ 1 b4 1 1 V pp 1 QQ 1 b4 1 1 V pp 1 QQ 1 b4 1 1 V pp 1 QQ 1 b4 1 9 1 V pp 1 QQ 1 b4 1 1 V pp 1 QQ 1 b4 1...

Page 444: ...00 00 00 40 00 00 00 00 00 40 00 5 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 6 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 7 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 8 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 9 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 ...

Page 445: ...1 87 XG1 6 24 XG2 9 36 XG3 1 87 RG1 2 50 RG2 5 00 RG3 6 00 50L1 0 50 50GZ1 0 50 k0M1 0 726 k0A1 3 69 Z1PD OFF Z2PD 20 00 Z3PD OFF Z1GD OFF Z2GD 20 00 Z3GD OFF Z1D OFF Z2D OFF Z3D OFF 50P1P 11 25 67P1D 0 00 51GP 0 75 51GC U3 51GTD 2 00 51GRS Y 51QP 2 20 51QC U3 51QTD 2 00 51QRS N ZLF 9 22 ZLR 9 22 PLAF 30 00 NLAF 30 00 PLAR 150 00 NLAR 210 00 DIR3 R DIR4 F ORDER QVI CLOEND OFF 52AEND 10 00 SOTFD 30...

Page 446: ... column data can be converted to phasor rms values Voltages are processed similarly Continued from previous page RST13 0 SET14 0 RST14 0 SET15 0 RST15 0 SET16 0 RST16 0 67P1TC 1 51GTC 1 51QTC 1 OUT101 TRIP OUT102 TRIP OUT103 CLOSE OUT104 KEY OUT105 0 OUT106 0 OUT107 0 DP1 52A DP2 0 DP3 0 DP4 0 DP5 0 DP6 0 DP7 0 DP8 0 DP9 0 DP10 0 DP11 0 DP12 0 DP13 0 DP14 0 DP15 0 DP16 0 SS1 0 SS2 0 SS3 0 SS4 0 SS...

Page 447: ...ent Waveform In Figure 12 4 note that any two rows of current data from the event report in Figure 12 3 1 4 cycle apart can be used to calculate rms current values 2475 1531 2 1945 2 2478 1532 2 1948 2 event report column 2478 1948 2 1531 2 1532 1948 1531 1945 1945 1531 1948 1532 IB RMS 2477 A 3503 Apeak 2 1 2 multiply by 2 1 multiply by 1945 1948 1531 1532 2165 2755 2167 2751 t peak peak 3503 A I...

Page 448: ...ple Standard 15 Cycle Event Report Figure 12 5 Derivation of Phasor RMS Current Values From Event Report Current Values 38 2 Arctan 1531 1945 Angle Arctan Y X Y 1531 X 1945 Magnitude Y previous 1 4 cycle X present sample 2475 1945 2 1531 2 event report column 1945 1531 1948 1532 IB t 1 4 cyc IB ...

Page 449: ...ote that two rows of current data from the event report in Figure 12 3 1 4 cycle apart can be used to calculate phasor rms current values In Figure 12 5 at the present sample the phasor rms current value is IB 2475 A 38 2 The present sample IB 1945 A is a real rms current value that relates to the phasor rms current value 2475 A cos 38 2 1945 A ...

Page 450: ... state Making SER Trigger Settings Enter up to 24 element names in each of the SER settings via the SET R command See Table 9 5 and Table 9 6 for references to valid relay element Relay Word bit names See the SET R command in Table 9 1 and corresponding Sequential Events Recorder Settings Serial Port Command SET R on page SET 25 Use commas to delimit the elements For example if you enter setting S...

Page 451: ...on through the report is down the page and in descending row number SER 47 22 If SER is entered with two numbers following it 47 and 22 in this example 47 22 all the rows between and including rows 47 and 22 are displayed if they exist They display with the newest row row 22 at the beginning top of the report and the oldest row row 47 at the end bottom of the report Reverse chronological progressi...

Page 452: ... Standard Event Reports and SER Sequential Events Recorder SER Report Clearing SER Report Clear the SER report from nonvolatile memory with the SER C command as shown in the following example SER C Enter Clear the SER Are you sure Y N Y Enter Clearing Complete ...

Page 453: ...14 99 08 53 35 079 OUT101 Deasserted 1 10 14 99 08 53 35 079 OUT102 Deasserted Figure 12 6 Example Sequential Events Recorder SER Event Report The SER event report rows in Figure 12 6 are explained in Table 12 7 numbered in correspondence to the column The circled numbered comments in Figure 12 3 also correspond to the column numbers in Figure 12 6 The SER event report in Figure 12 6 may contain r...

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Page 455: ...Troubleshooting Overview This section provides guidelines for determining and establishing test routines for the SEL 311C Relay Included are discussions on testing philosophies methods and tools Relay self tests and troubleshooting procedures are shown at the end of the section ...

Page 456: ...he relay meets the requirements of the intended application c Gain familiarity with relay settings and capabilities 3 What to test a All protection elements and logic functions critical to the intended application SEL performs detailed acceptance testing on all new relay models and versions We are certain the relays we ship meet their published specifications It is important for you to perform acc...

Page 457: ...input operation Maintenance Testing 1 When a At regularly scheduled intervals or when there is an indication of a problem with the relay or system 2 Goals a Ensure that the relay is measuring ac quantities accurately b Ensure that scheme logic and protection elements are functioning correctly c Ensure that auxiliary equipment is functioning correctly 3 What to test a Anything not shown to have ope...

Page 458: ... data to determine areas requiring attention Slow breaker auxiliary contact operations and increasing or varying breaker operating time can be detected through detailed analysis of relay event reports Because SEL relays are microprocessor based their operating characteristics do not change over time Time overcurrent operating times are affected only by the relay settings and applied signals It is ...

Page 459: ...d Event Reports and SER SUM The relay generates an event summary for each oscillographic event report Use the SUM command to view and acknowledge the event summaries Use the event summary to quickly verify proper relay operation Compare the reported fault current and voltage magni tudes and angles against the reported fault location and fault type If you question the relay response or your test me...

Page 460: ... Test the pickup and dropout of relay elements using one of three methods target command indication output contact closure sequential events recorder SER The examples below show the settings necessary to route the phase time overcurrent element 51PT to the output contacts and the SER The 51PT element like many in the SEL 311C is controlled by enable settings and or torque control SELOGIC control e...

Page 461: ...the Relay Word row containing the 51PT element Review TAR command descriptions in Section 10 Serial Port Communications and Commands and Section 11 Front Panel Interface Only on Models With LCD for further details on displaying element status via the TAR commands Testing Via Output Contacts You can set the relay to operate an output contact for testing a single element Use the SET L command SELOGI...

Page 462: ...when phase current is above the pickup of the phase time overcurrent element Element 51PT asserts when the phase time overcurrent element times out The assertion and deassertion of these elements is time stamped in the SER report Use this method to verify timing associated with time overcurrent elements reclosing relay operation etc Do not forget to reenter the correct relay settings when you are ...

Page 463: ...appropriate for the relay under test Method Step 1 Refer to the information sticker on the rear panel of the relay The Power options include 24 volts dc 48 volts dc and 250 volts ac dc Step 2 Refer to the sticker attached to your relay to determine the magnitude of voltage you should apply to the relay power supply input terminals The voltage source should be capable of providing 12 watts continuo...

Page 464: ... front panel Method Step 1 Turn on the voltage source connected to the relay power supply inputs Step 2 If you are using a battery simulator as the relay power supply voltage source be sure the simulator voltage level is stabilized a The relay front panel Enable target EN should illuminate b EN should appear in the relay LCD screen c The relay output labeled ALARM is typically configured as a norm...

Page 465: ...lied phase voltages Purpose Verify correct voltage and current connections and levels Method Step 1 Turn relay power on Step 2 Press the front panel METER pushbutton Step 3 Use the arrow keys to examine the METER data The relay displays the measurements of the voltages and currents applied in the steps listed above in Purpose Connect voltage and current sources to the relay With applied voltages o...

Page 466: ...n to select the first letter c Use the arrow buttons to select the remaining letters The blank character precedes the second letter of the password d When the lower line of the display reads the following where XYZ represents the current password PASSWORD XYZ press the SELECT button to enter Access Level 2 The relay then resumes the default display e Press the pushbutton labeled SET f The display ...

Page 467: ...te You can use the front panel LCD functions to examine the short form fault data following each test Table 13 3 shows the expected results Table 13 2 Fault Locator Test Values Location Type VA VB VC IA IB IC Units 75 miles AG 52 89 0 00 69 97 124 30 70 34 124 10 5 24 82 40 0 00 0 00 0 00 0 00 V or A Degrees BC 67 00 0 00 56 75 126 20 56 75 126 20 0 00 0 00 7 83 174 00 7 83 6 00 V or A Degrees 85 ...

Page 468: ...he A B C and G targets indicate the phase involvement The COMM and SOTF targets indicate when the trip occurred as part of a Communications based operation or a Switch Onto Fault operation respectively Section 5 Trip and Target Logic includes detailed information regarding operation of the relay targets Front Panel LCD Explanation The relay generates an event report for each fault To see the summa...

Page 469: ...element tests Three Voltage Source and Three Current Source Connections Figure 13 2 shows connections to use when three voltage sources and three current sources are available Any protective element may be tested and any fault type simulated through use of these connections Figure 13 2 Three Voltage Source and Three Current Source Test Connections Relay Rear Panel Voltage and Current Inputs IB IA ...

Page 470: ...e ground and two phase ground faults may be simulated through use of the connections shown in Figure 13 3 Three phase faults may be simulated through use of the connections shown in Figure 13 4 Figure 13 3 Phase to Phase Phase to Ground and Two Phase to Ground Fault Test Connections Using Two Current Sources Relay Rear Panel Voltage and Current Inputs IB IA VA VB IB VA N VC Three Phase Voltage Two...

Page 471: ...ure 13 6 show connections to use when three voltage sources and a single current source are available Phase ground faults may be simulated through use of the connections shown in Figure 13 5 Phase to phase faults may be simulated through use of the connections shown in Figure 13 6 Relay Rear Panel Voltage and Current Inputs IB IA VA VB IB VA N VC Three Phase Voltage and Current Test Sources IC VC ...

Page 472: ...leshooting Test Setup Figure 13 5 Phase to Ground Fault Test Connections Using a Single Current Source Relay Rear Panel Voltage and Current Inputs IB IA VA VB IB VA N VC Three Phase Voltage and Current Test Sources IC VC IC IA IC VB IB IA 121 120 119 118 106 105 104 103 102 101 ...

Page 473: ... 311C Port F Complete details regarding serial communications with the relay may be found in Section 10 Serial Port Communications and Commands Figure 13 7 Communications Connections Between the SEL 311C and a Terminal Relay Rear Panel Voltage and Current Inputs IB IA VA VB IB VA N VC IC VC IC IA IC VB IB IA 121 120 119 118 106 105 104 103 102 101 WARNING Use only serial communications cables manu...

Page 474: ...WSET command via a terminal connected to a relay serial port or by examining the relay settings via the front panel LCD display through use of the Access Level 2 SET command Step 3 Select the method used to indicate assertion of the element under test Typically this is accomplished by monitoring an output contact programmed to indicate only the condition under test Step 4 Make test source connecti...

Page 475: ...s example we use the OUT106 output a From Access Level 2 execute the SET L n command to configure output OUT106 to close for assertion of the 50P1 overcurrent element SET L 1 OUT106 Enter SELogic group 1 OUT106 0 50P1 Enter OUT107 0 END Enter b After you type END Enter to end the set procedure the relay displays the current logic settings You must continue to type Enter to review the full group of...

Page 476: ...tage and current and the second uses three voltages and one current Examples of both methods are provided below following an explanation of the equations that define the element Negative Sequence Directional Element Based Upon Negative Sequence Impedance The SEL 311C calculates the magnitude and angle of negative sequence voltage and current applied to the relay From that information the relay cal...

Page 477: ...2F and Z2R relay settings and the magnitude of negative sequence voltage divided by the magnitude of negative sequence current When Z2c is less than the forward Z2 threshold Z2FT the fault is in the forward direction so the relay sets the F32Q and F32QG elements if other supervisory conditions permit When Z2c is greater than the reverse Z2 threshold Z2RT the fault is in the reverse direction so th...

Page 478: ...ement If the magnitude of applied 3I2 is not greater than the 50QFP setting the F32Q and F32QG elements do not assert to indicate direction If the magnitude of 3I2 applied is not greater than the 50QRP setting the R32Q and R32QG elements do not assert Magnitude Comparison of Positive Sequence Current to Negative Sequence Current The relay multiplies the measured positive sequence current I1 magnit...

Page 479: ...the following settings Z1MAG 7 8 Ω Z1ANG 83 97 Z2F 0 77 Ω 50QF 0 5 amps secondary Z2R 5 45 Ω 50QR 0 5 amps secondary a2 0 07 k2 0 2 Step 2 Execute the SET command and change the example ELOP setting from Y to N Step 3 Select output contacts to indicate operation of the F32Q and R32Q elements In this example we use the OUT106 and OUT107 outputs Step 4 From Access Level 2 execute the SET L n command...

Page 480: ...ollowing equations Equation 13 9 Using single phase signals simplifies the V2 and I2 calculations VB VC 0 volts IB IC 0 amps Equation 13 10 Assume that you apply a test voltage VA 18 0 180 volts secondary Equation 13 11 Determine the test angle of A phase current from the Z1ANG relay setting Equation 13 1 yields a positive result when I2 lags V2 by the angle of Z1ANG Equation 13 1 yields a negativ...

Page 481: ...ss than Z2RT so R32Q deasserts For Z2F 0 77 Ω Equation 13 16 Calculate Z2m Equation 13 17 Because Z2F is positive use Equation 13 5 to calculate Z2FT Equation 13 18 The F32Q element asserts when Z2c is less than Z2FT As the magnitude of IA increases the magnitudes of Z2c and Z2m decrease For magnitudes of IA less than 23 4 amps F32Q should not assert given the other test quantities For IA magnitud...

Page 482: ...ts closing OUT106 when IA 23 4 amps indicating that Z2c is less than Z2FT d Verify the performance described above by calculating Z2c through use of Equation 13 1 and the test quantities listed above For VA 18 0 V 180 IA 3 3 A 96 V2 6 0 180 I2 1 10 1 Z1ANG 1 83 97 Equation 13 19 For VA 18 0 V 180 IA 23 4 A 96 and using the equation above V2 6 0 V 180 I2 7 80 1 Z1ANG 1 83 97 Equation 13 20 Z2c Re V...

Page 483: ...Level 2 execute the SET L n command to configure Output 6 and Output 7 to close for assertion of the F32Q and R32Q elements respectively SET L 1 OUT106 Enter SELogic group 1 OUT106 0 F32Q Enter OUT107 0 R32Q Enter DP1 52A END Enter Step 5 After you type END Enter to end the set procedure the relay displays the current logic settings Step 6 At the prompt type Y Enter to accept those settings Step 7...

Page 484: ...als shown above V2 is 180 out of phase from VA Take this into account and calculate the angle of IA with respect to the angle of VA Equation 13 1 yields a positive result when IA leads VA by 180 Z1ANG Equation 13 1 yields a negative result when IA lags VA by Z1ANG We are testing for positive values of Z2c so IA should lead VA by 180 Z1ANG Assuming that VA 49 0 0 volts the angle of IA for this test...

Page 485: ...ep 15 Calculate Z2m Equation 13 29 Step 16 Because Z2F is positive use Equation 13 5 to calculate Z2FT Equation 13 30 The F32Q element asserts when Z2c is less than Z2FT As the magnitude of IA increases the magnitudes of Z2c and Z2m decrease For magnitudes of IA less than 23 4 amps F32Q should not assert given the other test quantities For IA magnitudes greater than 23 4 amps Z2c applied is less t...

Page 486: ...ing that Z2c is less than Z2FT Step 21 Verify that the relay operated properly by calculating Z2c through use of Equation 13 1 and the test quantities listed below For IA 3 30 A 96 VA 49 0 V 0 VB 67 0 V 120 VC 67 0 V 120 V2 6 0 V 180 I2 1 10 1 Z1ANG 1 83 97 Equation 13 31 For IA 23 4 A 96 VA 49 0 V 0 VB 67 0 120 VC 67 0 V 120 V2 6 0 V 180 I2 7 80 1 Z1ANG 1 83 97 Equation 13 32 Z2c Re V2 1 Z1ANG I2...

Page 487: ...t associated with the faulted phase pair and zone under test Phase Distance Element Supervisory Conditions There are a number of supervisory conditions that must be fulfilled before the relay allows a phase distance element to pick up These supervisory conditions are described below Phase to Phase Nondirectional Overcurrent Element 50PPn Each phase to phase distance element is supervised by a nond...

Page 488: ...ce Step 1 Execute the SHOWSET command and verify the following relay settings Z1MAG Z1ANG PMHOZ Z2P 50PP2 Z2F and 50QF The example relay settings use the following settings Z1MAG 7 8 Z1ANG 83 97 PMHOZ 3 Z2P 9 36 Ω 50PP2 2 22 Z2F 0 77 Ω 50QF 0 5 amps secondary Step 2 Execute the SET command and change the example ELOP setting from Y to N This prevents the relay Loss of Potential logic from blocking...

Page 489: ...nts of the relay settings but are within the ability of the voltage and current test sources to produce accurately The Zone 2 phase distance element is forward reaching Thus it is supervised by the forward directional element 32QF as well as the 50PP2 phase to phase overcurrent elements For the distance element to assert the applied phase to phase current must exceed the 50PP2 setting and applied ...

Page 490: ...d 3I2 4 33 amps This selection fulfills the supervisory overcurrent conditions described above The reach of the distance element under test is defined by the element setting In this case Z2P 9 36 secondary ohms Step 12 Calculate the magnitude of VBC through use of Equation 13 37 Equation 13 37 Refer to Figure 13 8 and use the equations below to calculate the magnitude and angle of VB and VC based ...

Page 491: ...ample settings the magnitude of VBC equals 46 8 volts From the equations above select the following test voltage magnitudes and angles VA 67 0 V 0 volts VB 46 8 150 volts VC 46 8 150 volts The phase distance element maximum reach is measured when faulted phase to phase current lags faulted phase to phase voltage by the distance element maximum torque angle In the SEL 311C the phase distance elemen...

Page 492: ...m Table 13 5 VA 67 0 V 0 volts VB 46 8 V 150 volts VC 46 8 V 150 volts Equation 13 43 Because of the test connections used IB IC ITEST IA 0 0 A 0 IB 2 5 A 173 97 IC 2 5 A 6 03 Equation 13 44 Using Equation 13 40 to calculate Z2c the result is Equation 13 45 The Z2FT threshold is 2 91 Ω The value of Z2c applied 15 47 Ω is less than the Z2FT threshold based upon the Z2F setting 0 77 Ω and Z2m 15 47 ...

Page 493: ...distance element at an angle of 38 97 First the new desired impedance angle 38 97 is 45 less than the original test impedance angle 83 97 Add 45 to the angle of ITEST1 Equation 13 47 e Calculate the magnitude of ITEST2 through use of Equation 13 48 Equation 13 48 Ground Mho Distance Elements The SEL 311 includes up to four zones of mho ground distance protection Enable the number of ground distanc...

Page 494: ...nt element For example the relay may assert the Zone 3 A ground distance element only if the A phase current is greater than the 50L3 setting and the residual current is greater than the 50GZ3 setting Ground Directional Element The ground distance protection function is supervised by the ground directional element to provide improved directional security Forward reaching distance elements may not ...

Page 495: ...ep 3 Select an output contact to indicate operation of the Z2G element In this example we use the OUT106 output Step 4 From Access Level 2 execute the SET L n command to configure Output 6 to close for assertion of the Z2G element SET L 1 OUT106 Enter SELogic group 1 OUT106 0 Z2G Enter OUT107 0 END Enter Step 5 After you type END Enter to end the set procedure the relay displays the current logic ...

Page 496: ...t is supervised by the forward directional element 32GF as well as the 50L2 and 50GZ2 phase and residual overcurrent elements Applied phase current must exceed the 50L2 setting applied residual current must exceed the 50GZ2 setting and applied 3I2 must exceed the 50QF setting The 50L overcurrent elements operate based upon the magnitude of the phase current Using the current connections shown in F...

Page 497: ...quence current compensation factor k0 The SEL 311C uses k0M1 and k0A1 settings to define the zero sequence current compensation factor for Zone 1 ground distance elements When the advanced user settings are not enabled EADVS N the remaining zone settings k0M and k0A follow k0M1 and k0A1 The impedance measured by the relay ground mho distance element for a Zone 2 fault is defined by the following e...

Page 498: ...p 14 Select VB 67 120 volts and VC 67 120 volts With the above settings the ground distance elements are supervised by the negative sequence directional element It is important to check the negative sequence quantities applied and verify that the 32GF element should assert allowing the forward reaching distance element to operate Step 15 Calculate the magnitude and angle of negative sequence volta...

Page 499: ...VC at the magnitudes and angles listed in Table 13 6 b Turn on the current test source c Set the current angle to 82 Slowly increase the magnitude of current applied until the Z2G element asserts causing OUT106 to close This occurs when current applied is approximately 2 5 amps You might want to test the distance element characteristic at impedance angles other than the line positive sequence impe...

Page 500: ...G1 6 24 XG2 9 36 XG3 1 87 RG1 2 5 RG2 5 0 and RG3 6 0 Changing the E21MG setting prevents the relay ground mho distance elements from interfering with the test Step 3 Select output contacts to indicate operation of the Z2G element In this example we use the OUT106 output ITEST2 ITEST1 45 173 97 45 128 97 NOTE As you perform this test other protection elements can assert causing the relay to close ...

Page 501: ...e example relay settings The following text describes a hand calculation method you can use to calculate relay distance element voltage and current test signals If you do not want to review this information go to Step 14 The relay ground distance elements operate based upon the magnitude of applied phase ground impedance The impedance calculation is supervised by the functions described To effecti...

Page 502: ...e following identity Equation 13 68 If we select a value for VA it then becomes possible to use Equation 13 68 to calculate the magnitude and angle of IA required to test the Zone 2 ground quadrilateral distance element reactive reach For the example select VA 40 0 0 To simplify the reactance calculation select the angle of IA 90 with respect to VA For the Zone 2 element XG2 9 36 Ω Z1ANG 83 97 and...

Page 503: ...d upon the magnitude of the residual current Through use of the current connections shown in Figure 13 5 we can see that the magnitude of IR is equal to the magnitude of the applied test current With a 50GZ2 setting of 0 50 amps 50GZ2 picks up when ITEST is greater than 0 50 amps The 50QF negative sequence overcurrent element operates based upon the magnitude of 3I2 applied Through use of the curr...

Page 504: ... 0 IC 0 0 A 0 0 Equation 13 80 Through use of Equation 13 76 to calculate Z2c we obtain the following result Equation 13 81 The relay example Z2F setting is 0 77 Ω The value of Z2c applied 10 84 Ω is less than the Z2FT threshold 4 46 Ω so the 32GF element asserts when these signals are applied If Z2c applied is greater than the Z2FT setting select new test current and voltages through performance ...

Page 505: ...ollowing settings a Change E21MG to N E21XG to 3 and ELOP from Y to N Changing the E21MG setting prevents the relay ground mho distance elements from interfering with the test Changing the ELOP setting prevents the Loss of Potential logic from blocking operation of the relay distance elements if the test signals fulfill Loss of Potential conditions Step 3 Select an output contact to indicate opera...

Page 506: ...nals If you do not want to review this information go to Step 14 The relay ground distance elements operate based upon the magnitude of applied phase ground impedance The impedance calculation is supervised by the functions described To effectively test the distance elements select test signals that fulfill the impedance and supervisory requirements of the relay but are within the ability of the t...

Page 507: ...tion 13 84 Because the angle of IA equals 0 simplify the equation above Equation 13 85 Canceling the imaginary terms and rearranging the equation to calculate IA yields Equation 13 86 The Zone 2 ground distance element is forward Thus it is supervised by the forward directional element 32GF as well as the 50L2 and 50GZ2 phase and residual overcurrent elements where k0 k01M k01A for Zone 1 2 3 and ...

Page 508: ...T is greater than 0 50 amps The 50QF negative sequence overcurrent element operates based upon the magnitude of 3I2 applied Through use of the current connections shown in Figure 13 5 calculate the magnitude of 3I2 applied based upon the magnitude of ITEST Equation 13 87 so Equation 13 88 With a 50QF setting of 0 5 amps 50QF picks up when ITEST is greater than 0 5 amps We calculated IA ITEST 8 0 a...

Page 509: ... test current and voltages through performance of the steps outlined above Step 14 Turn on the voltage sources a Apply VA VB and VC at the magnitudes and angles listed in Table 13 8 b Turn on the current test source c Set the current angle to 0 0 d Slowly increase the magnitude of current applied until the Z2G element asserts causing OUT106 to close This occurs when current applied is approximatel...

Page 510: ...elements that are enabled to trip Check the settings of elements that supervise elements that are enabled to trip Incorrect Distance Element Characteristic Shape Check the voltage and current connections by applying small signals to the connected current and voltage inputs Trigger an event report through use of the TRIGGER command Plot the magnitude and angle of measured currents and voltages Veri...

Page 511: ...hooting Test Results Check the event report to determine which elements asserted during the event Check the connections and test signals to ensure that the appropriate signals were applied to cause the element under test to assert Table 13 9 Test Result Problems Sheet 2 of 2 Symptom What to Check ...

Page 512: ...nent Latched The relay generates automatic STATUS reports at the serial port for warnings and failures The relay displays failure messages on the relay LCD display for failures Use the serial port STATUS command or front panel STATUS pushbutton to view relay self test status Table 13 10 Relay Self Tests Sheet 1 of 2 Self Test Condition Limits Protection Disabled ALARM Output Description IA IB IC I...

Page 513: ...ettings every 10 seconds EEPROM Failure checksum Yes Latched Performs a checksum test on the non volatile copy of the relay settings every 10 seconds The following self tests are performed by dedicated circuitry in the microprocessor and the SEL 311C main board Failures in these tests shut down the microprocessor and are not shown in the STATUS report Microprocessor Crystal Failure Yes Latched The...

Page 514: ...elay should turn on the LCD back lighting Locate the contrast adjust potentiometer adjacent to the serial port con nector Use a small screwdriver to adjust the potentiometer Replace the relay front panel Relay Does Not Respond to Commands From Device Connected to Serial Port Ensure that the communications device is connected to the relay Verify relay or communications device baud rate setting and ...

Page 515: ...0060320 Instruction Manual SEL 311C Relay Testing and Troubleshooting Relay Calibration Relay Calibration The SEL 311C is factory calibrated If you suspect that the relay is out of calibration please contact the factory ...

Page 516: ...tory Assistance Factory Assistance We appreciate your interest in SEL products and services If you have questions or comments please contact us at Schweitzer Engineering Laboratories Inc 2350 NE Hopkins Court Pullman WA USA 99163 5603 Tel 509 332 1890 Fax 509 332 7990 Internet www selinc com ...

Page 517: ...ngs Conversion Guide on page 14 32 SEL 221C to SEL 311C Settings Conversion Guide on page 14 39 SEL 221 16 to SEL 311C Settings Conversion Guide on page 14 47 SEL 2PG10 to SEL 311C Settings Conversion Guide on page 14 53 Following this section you will find a series of Settings Sheets that explain how to set the SEL 311C so that it will function as a specific SEL 221 Series Relay SEL 311C Settings...

Page 518: ...settings are modified If SEL 311C functions are used after setting APP is changed from 221G to 311C do not change setting APP back to 221G As described above when setting APP 221G the user is presented only with SEL 311C settings associated with the features found in an SEL 221G This section explains how to make SEL 311C settings directly from the settings used in an SEL 221G There are mainly two ...

Page 519: ...tep characteristic Zone 4 The SEL 311C uses a quadrilateral out of step characteristic Zone 6 The Zone 6 reach is calculated from the Zone 3 phase mho reach as shown in Figure 14 1 Figure 14 1 SEL 221G and SEL 311C Out of Step Characteristics Application Settings From Access Level 2 set the SEL 311C application setting to 221G as shown below SET APP TERSE Enter Line Parameter Settings Application ...

Page 520: ... manual references are to subsection headings rather than to section headings where Z1 the SEL 221G distance reach setting Z1MAG the SEL 311C positive sequence line impedance setting in secondary ohms Z1P the SEL 311C Zone 1 reach setting in secondary ohms Z1P Z1 100 Z1MAG Table 14 1 SEL 311C Settings Calculated From SEL 221G Settings Sheet 1 of 3 SEL 311C Settinga Calculated From SEL 221G Setting...

Page 521: ... 2 Logic Diagrams 50G2P 50N2P CTR 50G3P 50N3P CTR 67G1D Z1DG Residual Ground Instantaneous Definite Time Overcurrent Ele ments on page 3 28 Section 5 Choice of Zones 1 2 and 3 Residual Overcurrent Pickup Settings 67G2D Z2DG 67G3D Z3DG 51GP 51NP CTR Residual Ground Time Overcur rent Element on page 3 36 Section 2 51N Residual Time Overcurrent Element 51GC U1b U2 U3 U4 51NC 1 2 3 4 51GTD 51NTD 51GTC...

Page 522: ...2 79OI3 79OI3 79RSD None SEL 221G setting 79RS serves a slightly different purpose Reclosing Relay Timer Settings on page 6 14 Section 6 79RS Timer Eliminates Standing Close 79RSLD None 52AEND 52BT Pickup Switch Onto Fault Trip Logic on page 5 7 Section 5 High Set Phase Over current Setting 50H SOTFD 52BT Dropout TDURD TDUR Unlatch Trip on page 5 4 Section 5 Trip Duration Timer TDUR SV1PU 50MFD a ...

Page 523: ...ord Bits SEL 221G Relay Word Bit Equivalent SEL 311C SELOGIC Expression 1ABC M1P 32QF or M1PT 32QF if Z1PD is set 2ABC M2P 32QF 3ABC M3P 32QF if DIR3 F M3P 32QR if DIR3 R 4ABC None LOP ILOP 50H 50P1 50M 50P2 50L None 51NT 51GT 67N1 67G1 or 67G1T if 67G1D is set 67N2 67G2 67N3 67G3 51NP 51G Z1P M1P or M1PT if Z1PD is set Z2P M2P Z3P M3P Z2PT M2PT Z3PT M3PT OSB OSB 3P50 None 50MF SV1T SV1 50P2 ILOP ...

Page 524: ...APP 221G When setting APP 221G the SEL 311C automatically sets the following SELOGIC control equations Change the settings just as you would change the Mask Logic settings in an SEL 221G to customize the relay logic Default Tripping Logic Equations TR M1P M2PT M3PT 67G1 67G2T 67G3T 51GT OC SV1T TRSOTF M1P M2P 67G1 67G2 51GT 50P1 DTT IN101 SV2 IN102 SV3 IN103 Default Reclose Logic Equations 79RI M1...

Page 525: ...SV2 0 reserved for MPT SV3 0 reserved for MBT The following contact input assignments are made automatically by the SEL 311C when setting APP 221G These assignments cannot be changed unless setting APP is changed back to APP 311C Default Contact Input Functions IN101 DT Direct trip IN102 PT Permit trip IN103 BT Block trip IN104 CL Close breaker IN105 52A IN106 EXT External event report trigger ...

Page 526: ...gs are modified If SEL 311C functions are used after setting APP is changed from 221G5 to 311C do not change setting APP back to 221G5 As described above when setting APP 221G5 the user is presented only with SEL 311C settings associated with the features found in an SEL 221G 5 This section explains how to make SEL 311C settings directly from the settings used in an SEL 221G 5 There are mainly two...

Page 527: ...f step characteristic Zone 4 The SEL 311C uses a quadrilateral out of step characteristic Zone 6 The Zone 6 reach is calculated from the Zone 3 phase mho reach as shown in Figure 14 2 Figure 14 2 SEL 221G 5 and SEL 311C Out of Step Characteristics Application Settings From Access Level 2 set the SEL 311C application setting to 221G5 as shown below SET APP TERSE Enter Line Parameter Settings Applic...

Page 528: ...on manual references are to subsection headings rather than to section headings where Z1 the SEL 221G 5 distance reach setting Z1MAG the SEL 311C positive sequence line impedance setting in secondary ohms Z1P the SEL 311C Zone 1 reach setting in secondary ohms Z1P Z1 100 Z1MAG Table 14 5 SEL 311C Settings Calculated From SEL 221G 5 Settings Sheet 1 of 3 SEL 311C Settinga Calculated From SEL 221G 5...

Page 529: ...2 Logic Diagrams 50G2P 50N2P CTR 50G3P 50N3P CTR 67G2D Z2DG Residual Ground Instantaneous Definite Time Overcurrent Ele ments on page 3 28 Section 5 Choice of Zones 1 2 and 3 Residual Overcurrent Pickup Settings 67G3D Z3DG 51GP 51NP CTR Residual Ground Time Overcur rent Element on page 3 36 Section 2 51N Residual Time Overcurrent Element 51GC U1b U2 U3 U4 51NC 1 2 3 4 51GTD 51NTD 51GTC 1 32GF 51NT...

Page 530: ...ropout Z3XPU None 221G 5 fixed at 2 cycles Directional Comparison Block ing Logic on page 5 25 Section 5 Zone 2 Short Phase Time Delay Zone 2 Short Residual Overcurrent Time Delay Z3XD None 221G 5 fixed at 5 cycles BTXD None 221G 5 fixed at 0 5 cycles 21SD Z2SP 67SD Z2SG TDURD TDUR Unlatch Trip on page 5 4 Section 5 Trip Duration Timer TDUR SV1PU 50MFD a SEL 311C phase to phase fault detector sett...

Page 531: ...ate SEL 221G 5 Relay Word bit equivalent expression Table 14 7 and enter the resultant expression in the related SELOGIC control equation listed in Table 14 6 Table 14 7 SELOGIC Equivalent to SEL 221G 5 Relay Word Bits SEL 221G 5 Relay Word Bit Equivalent SEL 311C SELOGIC Expression 1ABC M1P 32QF 2ABC M2P 32QF 3ABC M3P 32QF if DIR3 F M3P 32QR if DIR3 R 4ABC None LOP ILOP 50H 50P1 50M 50P2 50L None...

Page 532: ...n setting APP 221G5 the SEL 311C automatically sets the following SELOGIC control equations Change the settings just as you would change the Mask Logic settings in an SEL 221G 5 to customize the relay logic Default Tripping Logic Equations TR M1P M2PT M3PT 67G1 67G2T 67G3T 51GT OC SV1T TRCOMM Z2PGS 67QG2S TRSOTF M1P M2P 67G1 67G2 51GT 50P1 DTT IN101 SV2 IN102 Default Reclose Logic Equations 79RI M...

Page 533: ...1 50P2 ILOP SV2 0 Reserved for MPT The following contact input assignments are made automatically by the SEL 311C when setting APP 221G5 These assignments cannot be changed unless setting APP is changed back to APP 311C Default Contact Input Functions IN101 DT Direct trip IN102 PT Permit trip IN103 BT Block trip IN104 CL Close breaker IN105 52A IN106 EXT External event report trigger ...

Page 534: ...o hidden settings are modified If SEL 311C functions are used after setting APP is changed from 221H to 311C do not change setting APP back to 221H As described above when setting APP 221H the user is presented only with SEL 311C settings associated with the features found in an SEL 221H This section explains how to make those remaining SEL 311C settings directly from the settings used in an SEL 2...

Page 535: ...as Equation 14 3 Convert SEL 221H Settings to SEL 311C Settings Table 14 9 shows all the SEL 311C settings that must be entered for the relay to perform protection similar to the SEL 221H when APP 221H Calculate each SEL 311C setting from SEL 221H settings using the formula shown Instruction manual references are to subsection headings rather than to section headings where Z1 the SEL 221H distance...

Page 536: ... Onto Fault Trip Logic on page 5 7 Section 5 50H High Set Phase Overcurrent Element 50P2P 50M CTR Loss of Potential Logic on page 4 1 Section 5 50 M Medium Set Phase Overcurrent Element 50G1P 50N1P CTR Instantaneous Definite Time Overcurrent Elements on page 3 26 Section 2 Logic Diagrams 50G2P 50N2P CTR 50G3P 50N3P CTR 67G2D Z2DG 67G3D Z3DG 51GP 51NP Residual Ground Time Overcur rent Element on pa...

Page 537: ...5 7 Section 5 High Set Phase Over current Setting 50H SOTFD 52BT Dropout Z3RBD Z3RBT Permissive Overreaching Trans fer Trip Logic on page 5 13 Section 5 Zone 3 Reverse Block Timer Setting Z3RBT EBLKD None ETDPU ETDPU EDURD EDUR EWFC WFCE 27PPW 27PP 59NW 59N TDURD TDUR Unlatch Trip on page 5 4 Section 5 Trip Duration Timer TDUR SV1PU A1TP SV1DO A1TD SV2PU 50MFD a SEL 311C phase to phase fault detec...

Page 538: ...ally OR each appropriate SEL 221H Relay Word bit equivalent expression Table 14 11 and enter the resultant expression in the related SELOGIC control equation listed in Table 14 10 Table 14 11 SELOGIC Equivalent to SEL 221H Relay Word Bits SEL 221H Relay Word Bit Equivalent SEL 311C SELOGIC Expression 1ABC M1P 32QF 2ABC M2P 32QF 3ABC M3P 32QF if DIR3 F M3P 32QR if DIR3 R 4ABC None LOP ILOP 50H 50P1...

Page 539: ...on for TRCOMM when APP 221H When setting APP 221H the SEL 311C automatically sets the following SELOGIC control equations Change the settings just as you would change the Mask Logic settings in an SEL 221H to customize the relay logic Default Tripping Logic Equations TR M1P M2PT M3PT 67G1 67G2T 67G3T 51GT OC SV2T TRCOMM M2P 67G2 TRSOTF M1P M2P 67G1 67G2 51GT 50P1 DTT IN101 SV4 IN103 Default Output...

Page 540: ...e The following contact input assignments are made automatically by the SEL 311C when setting APP 221H These assignments cannot be changed unless setting APP is changed back to APP 311C Default Contact Input Functions IN101 DT Direct trip IN102 PT Permit trip IN103 BT Block trip IN104 CL Close breaker IN105 52A IN106 EXT External event report trigger ...

Page 541: ...s are modified If SEL 311C functions are used after setting APP is changed from 221F to 311C do not change setting APP back to 221F As described above when setting APP 221F the user is presented only with SEL 311C settings associated with the features found in an SEL 221F This section explains how to make those remaining SEL 311C settings directly from the settings used in an SEL 221F There are ma...

Page 542: ...ed for the relay to perform protection similar to the SEL 221F when APP 221F Calculate each SEL 311C setting from the corresponding SEL 221F setting using the formula shown Instruction manual references are to subsection headings rather than to section headings Carefully note the difference between the SEL 311C and SEL 221F in the implementation of certain protection and logic schemes For example ...

Page 543: ... Phase and Ground Time Delay Z3D 50P1P 50H CTR Switch Onto Fault Trip Logic on page 5 7 Section 5 High Set Phase Over current Element Setting 50G1P 67NP CTR Residual Ground Instantaneous Definite Time Overcurrent Ele ments on page 3 28 Section 5 67NP Residual Over current Settings 67NP 67NTC N A 67G1TC 1 67NTC in the SEL 311C 50G1P is fixed forward 51GP 51NP CTR Residual Ground Time Overcur rent E...

Page 544: ...n 5 Trip Duration Timer TDUR SV1PU A1TP SELOGIC Control Equation Variables Timers on page 7 28 Section 2 Miscellaneous Timers SV1DO A1TD SV2PU VCT Voltage Elements on page 3 40 SV2DO None Latch Control Switches on page 7 13 a SEL 311C phase to phase fault detector settings 50PP1 50PP2 and 50PP3 are set to their minimum values and hidden This corresponds to SEL 221F setting 50P SEL 311C phase to gr...

Page 545: ...ay Word bit equivalent expression Table 14 15 and enter the resultant expression in the related SELOGIC control equation Table 14 14 MA2 OUT105 MA3 OUT106 MA4 OUT107 MRI 79RI MRC 79DTL Table 14 15 SELOGIC Equivalent to SEL 221F Relay Word Bits Sheet 1 of 2 SEL 221F Relay Word Bit Equivalent SEL 311C SELOGIC Expression Z1P M1P Z1G Z1G Z2PT M2PT Z2GT Z2GT Z3 M3P M3G Z3T Z3T 3P21 M3P 32QF 32Q 32GF 32...

Page 546: ...e the settings just as you would change the Mask Logic settings in an SEL 221F to customize the relay logic Default Tripping Logic Equations TR M1P Z1G M2PT Z2GT Z3T 67G1 51GT OC TRSOTF M1P Z1G M2PT Z2GT M3P Z3G Z3T 67G1 51GT 50P1 DTT IN101 SV3 IN102 SV4 IN103 Default Reclose Logic Equations 79RI M1P Z1G M2PT Z2GT 67G1 79DTL Z3T 51GT OC Default Output Contact Logic Equations OUT101 TRIP OUT102 TRI...

Page 547: ...settings P S and E The following contact input assignments are made automatically by the SEL 311C when setting APP 221F These assignments cannot be changed unless setting APP is changed back to APP 311C Default Contact Input Functions IN101 Programmable Input Direct Trip IN102 PT Permit trip IN103 BT Block trip IN104 CL Close breaker IN105 52A IN106 EXT External event report trigger Table 14 17 SE...

Page 548: ...no hidden settings are modified If SEL 311C functions are used after setting APP is changed from 221F3 to 311C do not change setting APP back to 221F3 As described above when setting APP 221F3 the user is presented only with SEL 311C settings associated with the features found in an SEL 221F 3 This section explains how to make those remaining SEL 311C settings directly from the settings used in an...

Page 549: ...d for the relay to perform protection similar to the SEL 221F 3 when APP 221F3 Calculate each SEL 311C setting from the corresponding SEL 221F 3 setting using the formula shown Instruction manual references are to subsection headings rather than to section headings Carefully note the difference between the SEL 311C and SEL 221F 3 in the implementation of certain protection and logic schemes For ex...

Page 550: ...0P1P 50H CTR Switch Onto Fault Trip Logic on page 5 7 Section 5 High Set Phase Over current Element Setting 50P2P None Breaker failure phase overcurrent pickup 50G1P 67NP CTR Residual Ground Instantaneous Definite Time Overcurrent Ele ments on page 3 28 Section 5 67NP Residual Over current Settings 67NP 67NTC N A 67G1TC 1 67NTC in the SEL 311C 50G1P is fixed forward 50G2P None Breaker failure resi...

Page 551: ...ch Onto Fault Protection SOTFD 52BT Dropout TDURD TDUR Unlatch Trip on page 5 4 Section 5 Trip Duration Timer TDUR SV1PU BFTD Instantaneous Definite Time Overcurrent Elements on page 3 26 Section 2 Breaker Failure Fea tures of the SEL 221 3 121F 3 and 221F 4 Relays SV1DO None Latch Control Switches on page 7 13 SV2PU VCT Voltage Elements on page 3 40 SV2DO None Latch Control Switches on page 7 13 ...

Page 552: ...ay Word bit equivalent expression Table 14 20 and enter the resultant expression in the related SELOGIC control equation Table 14 19 Table 14 19 SEL 311C SELOGIC Control Equation Equivalent to Each SEL 221F 3 Mask Logic Setting SEL 221F 3 Settings Mask SEL 311C SELOGIC Control Equations MTU TR MPT SV3 DTT MTB SV4 DTT MTO TRSOTF MA1 OUT104 MA2 OUT105 MA3 OUT106 MA4 OUT107 MRI 79RI MRC 79DTL Table 1...

Page 553: ...tings just as you would change the Mask Logic settings in an SEL 221F 3 to customize the relay logic Default Tripping Logic Equations TR M1P Z1G M2PT Z2GT Z3T 67G1 51GT OC TRSOTF M1P Z1G M2PT Z2GT M3P Z3G Z3T 67G1 51GT 50P1 DTT IN101 SV3 IN102 SV4 IN103 Default Reclose Logic Equations 79RI M1P Z1G M2PT Z2GT 67G1 79DTL Z3T 51GT OC Default Output Contact Logic Equations OUT101 TRIP OUT102 TRIP OUT10...

Page 554: ... emulates the SEL 221F 3 setting BFIN1 The following contact input assignments are made automatically by the SEL 311C when setting APP 221F3 These assignments cannot be changed unless setting APP is changed back to APP 311C Default Contact Input Functions IN101 Programmable Input Direct Trip IN102 PT Permit trip IN103 BT Block trip IN104 CL Close breaker IN105 52A IN106 EXT External event report t...

Page 555: ...functions are used after setting APP is changed from 221C to 311C do not change setting APP back to 221C As described above when setting APP 221C the user is presented only with SEL 311C settings associated with the features found in an SEL 221C This section explains how to make those remaining SEL 311C settings directly from the settings used in an SEL 221C There are mainly two kinds of settings ...

Page 556: ...P is calculated as Equation 14 6 Convert SEL 221C Settings to SEL 311C Settings Table 14 24 shows all the SEL 311C settings that must be entered for the relay to perform protection similar to the SEL 221C when APP 221C Calculate each SEL 311C setting from SEL 221C settings using the formula shown Instruction manual references are to subsection headings rather than to section headings where Z1 the ...

Page 557: ...TR Loss of Potential Logic on page 4 1 Section 5 Medium Set Phase Overcurrent Setting 50M 50G1P 50N1P CTR Instantaneous Definite Time Overcurrent Elements on page 3 26 Section 5 Residual Overcurrent Setting 50N1P 50G2P 50N2P CTR Section 5 Residual Overcurrent Setting 50N2P 50G3P 50N3P CTR Section 5 Residual Overcurrent Setting 50N3P 67G2D Z2DG Residual Ground Instantaneous Definite Time Overcurren...

Page 558: ...ion 2 Functional Descrip tion Directional Elements 27P Voltage Elements on page 3 40 Section 2 Reclosing Relay 59P 27PP 59PP 79OI1 79OI1 Section 6 Close and Reclose Logic Section 2 Reclosing Relay 79OI2 79O12 79O13 79O13 79RSD None SEL 221C setting 79RS serves a slightly different purpose Reclosing Relay Timer Settings on page 6 14 79RSLD None 52AEND 52BT Pickup Switch Onto Fault Trip Logic on pag...

Page 559: ...d SELOGIC control equation listed in Table 14 25 SV1PU 50MFD Section 5 Medium Set Overcur rent Setting 50M SV9DO VCT Section 2 Reclosing Relay a SEL 311C phase to phase fault detector settings 50PP1 50PP2 and 50PP3 are set to 0 1 INOM and are hidden This corresponds to SEL 221C setting 50L b Curve U1 in the SEL 311C is slightly different from curve 1 in the SEL 221C Time dial adjustments may be ne...

Page 560: ...on becomes TR M1P M3PT 67G1 67G2T 67G3T 51PT 51GT OC which is the default SELOGIC control equation for TR when APP 221C When setting APP 221C the SEL 311C automatically sets the following SELOGIC control equations Change the settings just as you would change the Mask Logic settings in an SEL 221C to customize the relay logic 51NT 51GT 67N1 67G1 67N2 67G2 67N3 67G3 51NP 51G Z1P MPP1 Z2P MPP2 Z3P MP...

Page 561: ... of SEL 221C voltage supervised reclosing in the SEL 311C These settings are made automatically by the SEL 311C when setting APP 221C These assignments cannot be changed unless setting APP is changed back to APP 311C SELOGIC variables SV4 SV7 are used for SEL 221C settings DLC LLC CVC and VSA SELOGIC variable SV13 must be entered into the 79DTL equation or voltage supervised reclosing will misoper...

Page 562: ...SEL 311C when setting APP 221C These assignments cannot be changed unless setting APP is changed back to APP 311C Default Input Logic Equations IN101 DT DIRECT TRIP IN102 PT PERMIT TO TRIP IN103 BT BLOCK TRIP IN104 DC DIRECT CLOSE IN105 52A IN106 ET EXTERNAL EVENT TRIGGER TRIP 52A 3P27 27AB 27BC 27CA DLC SV4 LLC SV5 59AB 59BC 59CA 3P59 VSA SV7 SHO CVC SV6 SV8 0 VCT 1 CYC 0 SV10 SV10 SV11 SV10 SV14...

Page 563: ...ns are used after setting APP is changed from 221 16 to 311C do not change setting APP back to 221 16 As described above when setting APP 221 16 the user is presented only with SEL 311C settings associated with the features found in an SEL 221 16 This section explains how to make those remaining SEL 311C settings directly from the settings used in an SEL 221 16 There are mainly two kinds of settin...

Page 564: ...st be entered for the relay to perform protection similar to the SEL 221 16 when APP 221 16 Calculate each SEL 311C setting from the corresponding SEL 221 16 setting using the formula shown Instruction manual references are to subsection headings rather than to section headings Carefully note the difference between the SEL 311C and SEL 221 16 in the implementation of certain protection and logic s...

Page 565: ...se and Ground Time Delay Z3D 50P1P 50H CTR Switch Onto Fault Trip Logic on page 5 7 Section 5 High Set Phase Over current Element Setting 50G1P 67NP CTR Residual Ground Instantaneous Definite Time Overcurrent Ele ments on page 3 28 Section 5 67NP Residual Over current Settings 67NP 67NTC N A 67G1TC 1 67NTC In the SEL 311C 50G1P is fixed forward 51GP 51NP CTR Residual Ground Time Overcur rent Eleme...

Page 566: ...ing 52BT and Switch Onto Fault Protection SOTFD 52BT Dropout TDURD TDUR Unlatch Trip on page 5 4 Section 5 Trip Duration Timer TDUR SV1PU A1TP SELOGIC Control Equation Variables Timers on page 7 28 Section 2 Miscellaneous Timers SV1DO A1TD a SEL 311C phase to phase fault detector settings 50PP1 50PP2 and 50PP3 are set to their minimum values and hidden This corresponds to SEL 221 16 setting 50P SE...

Page 567: ...1GT Include the open command OC 79DTL Z3T 51GT OC This is the default SELOGIC control equation for 79DTL when APP 221 16 When setting APP 221 16 the SEL 311C automatically sets the following SELOGIC control equations Change the settings just as you would change the Mask Logic settings in an SEL 221 16 to customize the relay logic Table 14 30 SELOGIC Equivalent to SEL 221 16 Relay Word Bits SEL 221...

Page 568: ...51GT OC SELOGIC Torque Control Equations 51GTC M2P Setting 51NTC 1 SELOGIC Variables Equations SV1 0 Reserved for MA1 Default Contact Input Functions Default Output Contact Logic Equations OUT101 TRIP OUT102 TRIP OUT103 CLOSE OUT104 0 Reserved for MA1 OUT105 0 Reserved for MA2 OUT106 M1P Z1G M2PT Z2GT 67G1 Reserved for MA3 OUT107 Z3T 51GT Reserved for MA4 SEL 311C Input IN101 IN102 IN103 IN104 IN1...

Page 569: ...r setting APP is changed from 2PG10 to 311C do not change setting APP back to 2PG10 As described above when setting APP 2PG10 the user is presented only with SEL 311C settings associated with the features found in an SEL 2PG10 This section explains how to make those remaining SEL 311C settings directly from the settings used in an SEL 2PG10 There are mainly two kinds of settings in the SEL 311C re...

Page 570: ...EL 2PG10 Settings to SEL 311C Settings Table 14 32 shows all the SEL 311C settings that must be entered for the relay to perform protection similar to the SEL 2PG10 when APP 2PG10 Calculate each SEL 311C setting from the corresponding SEL 2PG10 setting using the formula shown Instruction manual references are to subsection headings rather than to section headings Carefully note the difference betw...

Page 571: ...D 51GTC 67NC 51GTC is an SEL 311C SELOGIC setting 1 Nondirectional 32GF Torque Controlled ORDER Directional Control for Ground Distance and Residual Ground Overcurrent Elements on page 4 9 Q 32QE V 32VE I 32IE a SEL 311C phase to phase fault detector settings 50PP1 is set to its minimum value and hidden This corresponds to SEL 2PG10 setting 50L b Curve U1 in the SEL 311C is slightly different from...

Page 572: ...control equation Table 14 33 For example the factory default setting for MT in the SEL 2PG10 is shown in Table 14 35 From Table 14 33 the equivalent SEL 311C SELOGIC control equation to MT is TR Constructing the logical OR of the equivalent of each element selected in the MT mask from Table 14 34 gives TR MABC1 MPP1 51GT 67G1T Include the open command OC TR MABC1 MPP1 51GT 67G1T OC This is the def...

Page 573: ...current timer Default Contact Input Functions Default Output Contact Logic Equations OUT101 TRIP OUT102 TRIP OUT103 MABC1 Reserved for A1 OUT104 MPP1 Reserved for A2 OUT105 51G Reserved for A3 OUT106 51GT Reserved for A4 OUT107 67G1T Reserved for A5 Table 14 35 Default SEL 2PG10 Mask Logic Setting for MT 50L ZABC ZP ZPT 67NP 67NT 67NI 67DT 0 1 1 0 0 1 1 0 SEL 311C Input IN101 IN102 IN103 IN104 IN1...

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Page 575: ...mer Ratio 1 00 10000 00 PTRS Line Settings See Settings Explanations on page 9 33 Positive sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z1MAG Positive sequence line impedance angle 5 00 90 00 degrees Z1ANG Zero sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z0MAG Zero sequence line impedance a...

Page 576: ...ime Overcurrent Elements See Figure 3 22 Level 1 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G1P Level 2 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G2P Level 3 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G3P Residual Ground Definite Time Overcurrent Element Time Delay See Figure 3 22 Level 1 0 00 16000 00 cycles in 0 25 cy...

Page 577: ... 79OI3 Reset time from reclose cycle 0 00 999999 00 cycles in 0 25 cycle steps 79RSD Reset time from lockout 0 00 999999 00 cycles in 0 25 cycle steps 79RSLD Switch Onto Fault See Figure 5 3 52 A enable time delay OFF 0 00 16000 00 cycles in 0 25 cycle steps 52AEND SOTF duration 0 50 16000 00 cycles in 0 25 cycle steps SOTFD Other Settings Minimum trip duration time 2 00 16000 00 cycles in 0 25 cy...

Page 578: ...utput Contact Equations See Figure 7 27 Output Contact OUT101 OUT101 Output Contact OUT102 OUT102 Output Contact OUT103 OUT103 Output Contact OUT104 OUT104 Output Contact OUT105 OUT105 Output Contact OUT106 OUT106 Output Contact OUT107 OUT107 Protocol Settings See Below Protocol SEL LMD DNP MBA MBB MB8A MB8B MBGA MBGB PROTO PROTOCOL SETTINGS Set PROTO SEL for standard SEL ASCII protocol For SEL Di...

Page 579: ...et RTSCTS Y to enable hardware handshaking With RTSCTS Y the relay will not send characters until the CTS input is asserted Also if the relay is unable to receive characters it deasserts the RTS line Setting RTSCTS is not applicable to serial Port 1 EIA 485 or a port configured for SEL Distributed Port Switch Protocol Set FASTOP Y to enable binary Fast Operate messages at the serial port Set FASTO...

Page 580: ...________ Event Report Parameters See Section 12 Standard Event Reports and SER Length of event report 15 30 60 180 cycles LER Length of pre fault in event report 1 14 cycles in 1 cycle steps for LER 15 1 29 cycles in 1 cycle steps for LER 30 1 59 cycles in 1 cycle steps for LER 60 1 179 cycles in 1 cycle steps for LER 180 PRE ...

Page 581: ...rmer Ratio 1 00 10000 00 PTRS Line Settings See Settings Explanations on page 9 33 Positive sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z1MAG Positive sequence line impedance angle 5 00 90 00 degrees Z1ANG Zero sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z0MAG Zero sequence line impedance ...

Page 582: ...ments See Figure 3 22 Level 1 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G1P Level 2 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G2P Level 3 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G3P Residual Ground Definite Time Overcurrent Element Time Delay See Figure 3 22 Level 2 0 00 16000 00 cycles in 0 25 cycle steps 67G2D Lev...

Page 583: ...reclose cycle 0 00 999999 00 cycles in 0 25 cycle steps 79RSD Reset time from lockout 0 00 999999 00 cycles in 0 25 cycle steps 79RSLD Switch Onto Fault See Figure 5 3 52 A enable time delay OFF 0 00 16000 00 cycles in 0 25 cycle steps 52AEND SOTF duration 0 50 16000 00 cycles in 0 25 cycle steps SOTFD DCB Trip Scheme Settings See Figure 5 14 Zone level 3 reverse pickup time delay 0 00 16000 00 cy...

Page 584: ...ult trip conditions TRSOTF Direct transfer trip conditions DTT Reclosing Relay Equations See Reclosing Relay on page 6 11 Reclose initiate 79RI Drive to lockout 79DTL Torque Control Equations for Inst Def Time Overcurrent Elements Note torque control equation settings cannot be set directly to logical 0 Residual Ground see Figure 3 25 51GTC SELOGIC Control Equation Variable Timer Input Equations S...

Page 585: ...Meter Format Y N DTA Send auto messages to port Y N AUTO Enable hardware handshaking Y N MBT MBT is available when PROTO MBA or MBB RTSCTS Fast Operate Enable Y N FASTOP OTHER PORT SETTINGS Set T_OUT to the number of minutes of serial port inactivity for an automatic log out Set T_OUT 0 for no port time out This setting is available when PROTO SEL or LMD Set DTA Y to allow an SEL DTA or SEL DTA2 t...

Page 586: ...t settings as indicated below If the text settings listed below are not programmed as indicated the front panel display points will not display the correct information for these display points Display if DP1 logical 1 16 characters DP1_1 BREAKER CLOSED Display if DP1 logical 0 16 characters DP1_0 BREAKER OPEN Event Report Parameters See Section 12 Standard Event Reports and SER Length of event rep...

Page 587: ... Transformer Ratio 1 00 10000 00 PTRS Line Settings See Settings Explanations on page 9 33 Positive sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z1MAG Positive sequence line impedance angle 5 00 90 00 degrees Z1ANG Zero sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z0MAG Zero sequence line im...

Page 588: ...vel 1 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G1P Level 2 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G2P Level 3 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G3P Residual Ground Definite Time Overcurrent Element Time Delay See Figure 3 22 Level 2 0 00 16000 00 cycles in 0 25 cycle steps 67G2D Level 3 0 00 16000 00 cycle...

Page 589: ...secondary 27PPW WIF zero sequence 3V0 overvoltage 0 0 150 0 V secondary 59NW Other Settings Minimum trip duration time 2 00 16000 00 cycles in 0 25 cycle steps TDURD SELOGIC Control Equation Variable Timers See Figure 7 24 and Figure 7 25 SELOGIC control equation settings consist of Relay Word bits see Table 9 5 and SELOGIC control SV1 Pickup Time 0 00 999999 00 cycles in 0 25 cycle steps SV1PU SV...

Page 590: ...OUT107 OUT107 Protocol Settings See Below Protocol SEL LMD DNP MBA MBB MB8A MB8B MGBA MGBB PROTO PROTOCOL SETTINGS Set PROTO SEL for standard SEL ASCII protocol For SEL Distributed Port Switch Protocol LMD set PROTO LMD Do not use MIRRORED BITS MBx protocol in Application Settings Refer to Appendix C SEL Distributed Port Switch Protocol LMD for details on the LMD protocol The following settings ar...

Page 591: ...ort Switch Protocol Set FASTOP Y to enable binary Fast Operate messages at the serial port Set FASTOP N to block binary Fast Operate messages Refer to Appendix D Configuration Fast Meter and Fast Operate Commands for the description of the SEL 311C Relay Fast Operate commands This setting is available when PROTO SEL or LMD Power System Configuration See Settings Explanations on page 9 33 Phase rot...

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Page 593: ... Ratio 1 00 10000 00 PTRS Line Settings See Settings Explanations on page 9 33 Positive sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z1MAG Positive sequence line impedance angle 5 00 90 00 degrees Z1ANG Zero sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z0MAG Zero sequence line impedance angl...

Page 594: ...rcurrent Elements See Figure 3 19 Level 1 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50P1P Residual Ground Inst Def Time Overcurrent Elements See Figure 3 22 Level 1 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G1P Residual Ground Time Overcurrent Element See Figure 3 25 Pickup OFF 0 25 16 00 A secondary 5 A nom 0 05 3 20 A secondary 1 A nom 51GP Cur...

Page 595: ...imum trip duration time 2 00 16000 00 cycles in 0 25 cycle steps TDURD SELOGIC Control Equation Variable Timers See Figure 7 24 and Figure 7 25 SV1 Pickup Time 0 00 999999 00 cycles in 0 25 cycle steps SV1PU SV1 Dropout Time 0 00 999999 00 cycles in 0 25 cycle steps SV1DO SV2 Pickup Time 0 00 999999 00 cycles in 0 25 cycle steps SV2PU SV2 Dropout Time 0 00 999999 00 cycles in 0 25 cycle steps SV2D...

Page 596: ...tput Contact OUT101 OUT101 Output Contact OUT102 OUT102 Output Contact OUT103 OUT103 Output Contact OUT104 OUT104 Output Contact OUT105 OUT105 Output Contact OUT106 OUT106 Output Contact OUT107 OUT107 Protocol Settings See Below Protocol SEL LMD DNP MBA MBB MB8A MB8B MBGA MBGB PROTO PROTOCOL SETTINGS Set PROTO SEL for standard SEL ASCII protocol For SEL Distributed Port Switch Protocol LMD set PRO...

Page 597: ...ay will not send characters until the CTS input is asserted Also if the relay is unable to receive characters it deasserts the RTS line Setting RTSCTS is not applicable to serial Port 1 EIA 485 or a port configured for SEL Distributed Port Switch Protocol Set FASTOP Y to enable binary Fast Operate messages at the serial port Set FASTOP N to block binary Fast Operate messages Refer to Appendix D Co...

Page 598: ...________ Event Report Parameters See Section 12 Standard Event Reports and SER Length of event report 15 30 60 180 cycles LER Length of pre fault in event report 1 14 cycles in 1 cycle steps for LER 15 1 29 cycles in 1 cycle steps for LER 30 1 59 cycles in 1 cycle steps for LER 60 1 179 cycles in 1 cycle steps for LER 180 PRE ...

Page 599: ...r Ratio 1 00 10000 00 PTRS Line Settings See Settings Explanations on page 9 33 Positive sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z1MAG Positive sequence line impedance angle 5 00 90 00 degrees Z1ANG Zero sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z0MAG Zero sequence line impedance ang...

Page 600: ...ements See Figure 3 19 Level 1 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50P1P Level 2 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50P2P Residual Ground Inst Def Time Overcurrent Elements See Figure 3 22 Level 1 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G1P Level 2 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary ...

Page 601: ...e steps 52AEND SOTF duration 0 50 16000 00 cycles in 0 25 cycle steps SOTFD Other Settings Minimum trip duration time 2 00 16000 00 cycles in 0 25 cycle steps TDURD SELOGIC Control Equation Variable Timers See Figure 7 24 and Figure 7 25 SV1 Pickup Time 0 00 999999 00 cycles in 0 25 cycle steps SV1PU SV1 Dropout Time 0 00 999999 00 cycles in 0 25 cycle steps SV1DO SV2 Pickup Time 0 00 999999 00 cy...

Page 602: ...V2 SV2 SELOGIC control equation Variable SV3 SV3 SELOGIC control equation Variable SV4 SV4 SELOGIC control equation Variable SV5 SV5 Output Contact Equations See Figure 7 27 Output Contact OUT101 OUT101 Output Contact OUT102 OUT102 Output Contact OUT103 OUT103 Output Contact OUT104 OUT104 Output Contact OUT105 OUT105 Output Contact OUT106 OUT106 Output Contact OUT107 OUT107 Protocol Settings See B...

Page 603: ...for no port time out This setting is available when PROTO SEL or LMD Set DTA Y to allow an SEL DTA or SEL DTA2 to communicate with the relay This setting is available when PROTO SEL or LMD Set AUTO Y to allow automatic messages at the serial port This setting is available when PROTO SEL or LMD Set RTSCTS Y to enable hardware handshaking With RTSCTS Y the relay will not send characters until the CT...

Page 604: ...gs listed below are not programmed as indicated the front panel display points will not display the correct information for these display points Display if DP1 logical 1 16 characters DP1_1 BREAKER CLOSED Display if DP1 logical 0 16 characters DP1_0 BREAKER OPEN Event Report Parameters See Section 12 Standard Event Reports and SER Length of event report 15 30 60 180 cycles LER Length of pre fault ...

Page 605: ...mer Ratio 1 00 10000 00 PTRS Line Settings See Settings Explanations on page 9 33 Positive sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z1MAG Positive sequence line impedance angle 5 00 90 00 degrees Z1ANG Zero sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z0MAG Zero sequence line impedance a...

Page 606: ... 5 A nom 0 05 20 00 A secondary 1 A nom 50G1P Level 2 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G2P Level 3 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G3P Residual Ground Definite Time Overcurrent Element Time Delay See Figure 3 22 Level 2 0 00 16000 00 cycles in 0 25 cycle steps 67G2D Level 3 0 00 16000 00 cycles in 0 25 cycle steps 67G3D Phase...

Page 607: ...ay See Table 6 2 and Table 6 3 Open interval 1 time 0 00 999999 00 cycles in 0 25 cycle steps 79OI1 Open interval 2 time 0 00 999999 00 cycles in 0 25 cycle steps 79OI2 Open interval 3 time 0 00 999999 00 cycles in 0 25 cycle steps 79OI3 Reset time from reclose cycle 0 00 999999 00 cycles in 0 25 cycle steps 79RSD Reset time from lockout 0 00 999999 00 cycles in 0 25 cycle steps 79RSLD Switch Onto...

Page 608: ...trol equation settings cannot be set directly to logical 0 Residual Ground see Figure 3 25 51GTC SELOGIC Control Equation Variable Timer Input Equations See Figure 7 24 and Figure 7 25 SELOGIC control equation Variable SV1 SV1 SELOGIC control equation Variable SV2 SV2 SELOGIC control equation Variable SV3 SV3 SELOGIC control equation Variable SV4 SV4 SELOGIC control equation Variable SV5 SV5 SELOG...

Page 609: ...Meter Format Y N DTA Send auto messages to port Y N AUTO Enable hardware handshaking Y N MBT MBT is available when PROTO MBA or MBB RTSCTS Fast Operate Enable Y N FASTOP OTHER PORT SETTINGS Set T_OUT to the number of minutes of serial port inactivity for an automatic log out Set T_OUT 0 for no port time out This setting is available when PROTO SEL or LMD Set DTA Y to allow an SEL DTA or SEL DTA2 t...

Page 610: ...indicated below If the text settings listed below are not programmed as indicated the front panel display points will not display the correct information for these display points Display if DP1 logical 1 16 characters DP1_1 BREAKER CLOSED Display if DP1 logical 0 16 characters DP1_0 BREAKER OPEN Display if DP2 logical 1 16 characters DP2_1 ERROR DLC LCC 1 Event Report Parameters See Section 12 Sta...

Page 611: ...000 00 PTRS Line Settings See Settings Explanations on page 9 33 Positive sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z1MAG Positive sequence line impedance angle 5 00 90 00 degrees Z1ANG Zero sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z0MAG Zero sequence line impedance angle 5 00 90 00 d...

Page 612: ...0 16000 cycles Z3D Phase Inst Def Time Overcurrent Element See Figure 3 19 Level 1 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50P1P Residual Ground Inst Def Time Overcurrent Element See Figure 3 20 Level 1 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50G1P Residual Ground Time Overcurrent Element See Figure 3 25 Pickup OFF 0 25 16 00 A secondary 5 A no...

Page 613: ...s TR Switch onto fault trip conditions TRSOTF Reclosing Relay Equations See Reclosing Relay on page 6 11 Reclose initiate 79RI Drive to lockout 79DTL Torque Control Equations for Inst Def Time Overcurrent Elements Note torque control equation settings cannot be set directly to logical 0 Level 1 residual ground see Figure 3 22 67G1TC Residual Ground see Figure 3 25 51GTC SELOGIC Control Equation Va...

Page 614: ...Meter Format Y N DTA Send auto messages to port Y N AUTO Enable hardware handshaking Y N MBT MBT is available when PROTO MBA or MBB RTSCTS Fast Operate Enable Y N FASTOP OTHER PORT SETTINGS Set T_OUT to the number of minutes of serial port inactivity for an automatic log out Set T_OUT 0 for no port time out This setting is available when PROTO SEL or LMD Set DTA Y to allow an SEL DTA or SEL DTA2 t...

Page 615: ...programmed the text settings as indicated below If the text settings listed below are not programmed as indicated the front panel display points will not display the correct information for these display points Display if DP1 logical 1 16 characters DP1_1 BREAKER CLOSED Display if DP1 logical 0 16 characters DP1_0 BREAKER OPEN Event Report Parameters See Section 12 Standard Event Reports and SER L...

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Page 617: ...Potential Transformer Ratio 1 00 10000 00 PTRS Line Settings See Settings Explanations on page 9 33 Positive sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z1MAG Positive sequence line impedance angle 5 00 90 00 degrees Z1ANG Zero sequence line impedance magnitude 0 05 255 00 Ω secondary 5 A nom 0 25 1275 00 Ω secondary 1 A nom Z0MAG Zero sequenc...

Page 618: ... Directional Control Settings on page 4 21 Ground directional element priority combination of Q V or I ORDER SELOGIC Control Equation Variable Timers See Figure 7 24 and Figure 7 25 SELOGIC control equation settings consist of Relay Word bits see Table 9 5 and SELOGIC control SV1 Pickup Time 0 00 999999 00 cycles in 0 25 cycle steps SV1PU Trip Logic Equations See Figure 5 1 Direct trip conditions ...

Page 619: ...s setting is available when PROTO SEL or LMD PARITY Stop Bits 1 2 This setting is available when PROTO SEL or LMD STOP Other Port Settings See Below Time out 0 30 minutes T_OUT DTA Meter Format Y N DTA Send auto messages to port Y N AUTO Enable hardware handshaking Y N RTSCTS Fast Operate Enable Y N MBT MBT is available when PROTO MBA or MBB FASTOP OTHER PORT SETTINGS Set T_OUT to the number of mi...

Page 620: ...otating Default Display Only on Models With LCD on page 7 36 and Rotating Default Display on page 11 12 NOTE This application assumes that the user has programmed the text settings as indicated below If the text settings listed below are not programmed as indicated the front panel display points will not display the correct information for these display points Display if DP1 logical 1 16 character...

Page 621: ...onds to firmware versions The most recent firmware version is listed first where RN Revision Number e g 100 VS Version Specification ES External Software Version e g 001001 RD Release Date e g YYYYMMDD 19991203 Table A 1 Firmware Revision History Sheet 1 of 3 Firmware Part Revision No Description of Firmware Manual Date Code This firmware differs from the previous versions as follows SEL 311C R110...

Page 622: ...en accessed through the front panel or ASCII port All Energy Values rollover at 100000 COMMUNICATION Lowered Port 1 maximum speed from 38 4 kbps to 19 2 kbps Added new Protocol settings MBGA and MBGB which when set move MIRRORED BITS related settings into Group settings structure for more flexible operation such as in bus transfer schemes Improved password security This firmware differs from the p...

Page 623: ...5 Manual Update Only See Table A 3 for summary of manual updates 20010820 This firmware differs from the previous versions as follows SEL 311C R104 V0 Z002002 D20010625 Modified SEL 311 relays to record consecutive event reports Added STA C command Modified the SUM command so that the Breaker Status reports the status from the last row of the event report Changed the E21P default setting to 3C in ...

Page 624: ...Settings Change History Firmware Part Revision No Settings Change Description Manual Date Code SEL 311C R110 V0 Z005004 D20060320 Modified Time Overcurrent Element settings to allow for 0 05 INOM A minimum pickup Added Channel A MIRRORED BITS Settings EMBA RXIDA TXIDA to the Group settings Added Channel B MIRRORED BITS Settings EMBB RXIDB TXIDB to the Group settings Added Synchronized Phasor Setti...

Page 625: ...d synchrophasor accuracy Modified metering accuracy Section 2 Modified Figure 2 1 SEL 311C Relay Dimensions and Panel Mount Cutout to explain projection rack mounting option Rotated the rear panel drawing in Figure 2 3 Under IRIG B Time Code Input added a note that the IRIG B time signal does not update the relay internal year Section 3 Modified Time Overcurrent element pickup range in Table 3 9 T...

Page 626: ...cted Figure 11 4 SEL 311C Front Panel Pushbuttons Secondary Functions Section 12 Added a subsection Make SER Settings With Care Added P parameter to EVE command Added Synchrophasor Level Accuracy in Event Reports section Added P parameter note and DT column information to Table 12 3 Added Figure 12 2 Example Synchrophasor Level Precise Event Report 1 16 Cycle Resolution Section 14 Application Sett...

Page 627: ...rsions as follows 20050114 Appendix A Updated firmware and Firmware Revision History table Table A 1 This manual differs from the previous versions as follows 20030728 Appendix A Updated firmware and Firmware Revision History table This manual differs from the previous versions as follows 20020703 Removed Manual Change Information section and incorporated the information into the Instruction Manua...

Page 628: ...ng Section 7 Updated Input Debounce Timers section Added Displaying Time Overcurrent Elements on the Rotating Default Display and following sections Added descriptions of the ELAT ESV and EDP settings Section 8 Modified breaker reset options to include the internal and external trips and currents in the Via Serial Port subsection in the View or Reset Breaker Monitor Information section Section 9 U...

Page 629: ...orts the status from the last row of the event report Changed the E21P default setting to 3C in application settings 221G 221G5 and 221H This manual differs from the previous versions as follows 20010516 Appendix A Improved overflow supervision for distance elements This manual differs from the previous versions as follows 20010124 Reissued entire manual to reflect the following changes Added caut...

Page 630: ...23 in the Relay Summary Event Data subsection This manual differs from the previous versions as follows 20000922 Reissued entire manual to reflect updated format and added the following changes Added frequency elements Added compensator distance elements Added Application Settings Sheets for the SEL 221C SEL 221 16 and SEL 2PG10 Relays This manual differs from the previous versions as follows 2000...

Page 631: ...re from a remote location problems can arise that you will not be able to address from a distance When upgrading at the substation do not attempt to load the firmware into the relay through an SEL communications processor Perform the firmware upgrade process in the following sequence A Prepare the Relay B Establish a Terminal Connection C Save Settings and Other Data D Start SELBOOT E Download Exi...

Page 632: ...relay front panel press the SET pushbutton Step 4 Use the arrow pushbuttons to navigate to PORT Step 5 Press the SELECT pushbutton Step 6 Use the arrow pushbuttons to navigate to the relay serial port you plan to use usually the front port Step 7 Press the SELECT pushbutton Step 8 With SHOW selected press the SELECT pushbutton Step 9 Press the Down Arrow pushbutton to scroll through the port setti...

Page 633: ...rTerminal On a personal computer running Windows you would typically click Start Programs Accessories Step 4 Enter a name select any icon and click OK Figure B 1 Figure B 1 Establishing a Connection Step 5 Select the computer serial port you are using to communicate with the relay Figure B 2 and click OK This port matches the port connection that you made in Step 1 under B Establish a Terminal Con...

Page 634: ...p 7 Set the terminal emulation to VT100 a From the File menu choose Properties b Select the Settings tab in the Firmware Upgrade Properties dialog box Figure B 4 c Select VT100 from the Emulation list box and click OK Figure B 4 Setting Terminal Emulation Step 8 Confirm serial communication Press Enter In the terminal emulation window you should see the Access Level 0 prompt similar to that in Fig...

Page 635: ...ps to reattempt a connection Step 9 From the Call menu choose Disconnect to terminate communication Step 10 Correct the port setting a From the File menu choose Properties You should see a dialog box similar to Figure B 6 b Select a different port in the Connect using list box Figure B 6 Correcting the Port Setting Step 11 Correct the communications parameters a From the filename Properties dialog...

Page 636: ...ss Level 2 password and press Enter You will see the Access Level 2 prompt Backup Relay Settings The relay preserves settings and passwords during the firmware upgrade process However interruption of relay power during the upgrade process can cause the relay to lose settings Make a copy of the original relay settings in case you need to reenter the settings Use either the SEL 5010 Relay Assistant ...

Page 637: ...e Transfer menu in HyperTerminal select Capture Text and click Stop The computer saves the text file you created to the directory you specified in Step 2 on page 6 under Backup Relay Settings Step 6 Write down the present relay data transmission setting SPEED This setting is SPEED in the SHO P relay settings output The SPEED value should be the same as the value you recorded in Backup Relay Settin...

Page 638: ... number following the R is the SELBOOT revision number This number is different from the relay firmware revision number After SELBOOT loads the computer will display the SELBOOT prompt Step 4 Press Enter to confirm that the relay is in SELBOOT You will see another SELBOOT prompt Commands Available in SELBOOT For a listing of commands available in SELBOOT type HELP Enter You should see a screen sim...

Page 639: ...Relay Parameters E Download Existing Firmware Copy the firmware presently in the relay in case the new firmware upload is unsuccessful To make a backup of the existing firmware the computer will need as much as 3 MB of free disk space This backup procedure takes 5 10 minutes at 38400 bps Step 1 Type SEN Enter at the SELBOOT prompt to initiate the firmware transfer from the relay to the computer St...

Page 640: ...n If Xmodem times out before the download completes repeat the process from Step 1 on page 9 NOTE HyperTerminal stored any pathname you entered in Step 3 and any filename you entered in Step 6 during the earlier download attempt this saves you from reentering these on a subsequent attempt For a successful download you should see a dialog box similar to Figure B 13 After the transfer the relay resp...

Page 641: ...Y N Y Enter Step 3 Type Y to erase the existing firmware and load new firmware To abort type N or press Enter The relay responds with the following Erasing Erase successful Press any key to begin transfer then start transfer at the PC Enter Step 4 Press Enter to start the file transfer routine Step 5 Send new firmware to the relay a From the Transfer menu in HyperTerminal choose Send File Figure B...

Page 642: ...E Unsuccessful uploads can result from Xmodem time out a power failure loss of communication between the relay and the computer or voluntary cancellation Check connections reestablish communication and start again at Step 2 on page 11 If you want to reload the previous firmware begin at Step 2 on page 11 and use the firmware you saved in E Download Existing Firmware on page 9 Contact the factory f...

Page 643: ...the values you recorded in A Prepare the Relay on page 2 Step 3 From the Call menu choose Connect to rees tablish communication Step 4 Press Enter to check for the Access Level 0 prompt indicating that serial com munication is successful Step 5 If you get no response proceed to Match Computer Communications Speed to the Relay on page 9 The restart was successful but the relay data transmission rat...

Page 644: ...eck for Access Level 0 prompt c Use the ACC and 2AC commands and type the corresponding passwords to reenter Access Level 2 d Enter the SHO n command to view relay settings and verify that these match the settings you saved see Backup Relay Settings on page 6 Step 2 If the settings do not match reenter the settings you saved earlier a If you have SEL 5010 Relay Assistant software or ACSELERATOR Qu...

Page 645: ...rompt indicating that serial communication is successful Step 5 Use the ACC and 2AC commands and type the corresponding passwords to reenter Access Level 2 Step 6 Restore the original settings a If you have SEL 5010 Relay Assistant software or ACSELERATOR QuickSet restore the original settings by following the instructions for the respective software b If you do not have the SEL 5010 Relay Assista...

Page 646: ...ion string FID to verify download of the correct firmware a From the File menu choose Properties b Select the Settings tab in the Firmware Upgrade Properties dialog box Figure B 4 c Click ASCII Setup You should see a dialog box similar to Figure B 16 d Under ASCII Receiving select the check box to Append line feeds to incoming line ends Figure B 16 Preparing HyperTerminal for ID Command Display e ...

Page 647: ... the relay match those displayed in the event report If these values do not match check the relay settings and wiring I Return the Relay to Service Step 1 Follow your company procedures for returning a relay to service Step 2 Autoconfigure the SEL communications processor port if you have an SEL communications processor connected to the relay This step reestablishes automatic data collection betwe...

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Page 649: ...buted Port Switch Protocol LMD Overview SEL Distributed Port Switch Protocol LMD permits multiple SEL relays to share a common communications channel It is appropriate for low cost low speed port switching applications where updating a real time database is not a requirement ...

Page 650: ... reveal the following settings Setting Description PREFIX One character to precede the address This should be a character that does not occur in the course of other communications with the relay Valid choices are one of the following The default is ADDR Two character ASCII address The range is 01 to 99 The default is 01 SETTLE Time in seconds that transmission is delayed after the request to send ...

Page 651: ...echoed characters while the external transmitter is warming up 4 Until the relay connection terminates you can use the standard commands that are available when PROTO is set to SEL 5 The QUIT QUI command terminates the connection If no data bits are sent to the relay before the port time out period it automatically terminates the connection 6 Enter the sequence Ctrl X QUIT CR before entering the p...

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Page 653: ... data stream to continue This mechanism allows a single communications channel to be used for ASCII communications e g transmission of an event report interleaved with short bursts of binary data to support fast acquisition of metering data The device connected to the other end of the link requires software that uses the separate data streams to exploit this feature The binary commands and ASCII c...

Page 654: ...mand Fast Meter Data Message A5C3 Peak Demand Fast Meter Configuration Block A5D3 Peak Demand Fast Meter Data Message A5B9 Fast Meter Status Acknowledge A5CE Fast Operate Configuration Block A5E0 Fast Operate Remote Bit Control A5E3 Fast Operate Breaker Control A5CD Fast Operate Reset Definition Block A5ED Fast Operate Reset Command Table D 2 ASCII Configuration Message List Request to Relay ASCII...

Page 655: ...ration A5D1 Fast Meter message A5C2 Fast demand configuration A5D2 Fast demand message A5C3 Fast peak configuration A5D3 Fast peak message 0004 Settings change bit A5C100000000 Reconfigure Fast Meter on settings change 0004 Settings change bit A5C200000000 Reconfigure demand FM on settings change 0004 Settings change bit A5C300000000 Reconfigure peak demand FM on settings change 0300 SEL protocol ...

Page 656: ...ype FF Scale factor type 0000 Scale factor offset in Fast Meter message 564100000000 Analog channel name VA 01 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 564200000000 Analog channel name VB 01 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 564300000000 Analog channel name VC 01 Analog channel type FF Scale factor...

Page 657: ...IB channel index 02 IC channel index 04 VA channel index 05 VB channel index 06 VC channel index 00 Reserved checksum 1 byte checksum of all preceding bytes Table D 4 A5C1 Fast Meter Configuration Block Sheet 3 of 3 Data Description Table D 5 A5D1 Fast Meter Data Block Data Description A5D1 Command 94 Length 1 byte 1 Status Byte 80 bytes X and Y components of IA IB IC IP VA VB VC VS Freq and Vbatt...

Page 658: ...fset in Fast Meter message 494700000000 Analog channel name IG 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 334932000000 Analog channel name 3I2 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 50412B000000 Analog channel name PA 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter...

Page 659: ...or type 0000 Scale factor offset in Fast Meter message 50412D000000 Analog channel name PA 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 50422D000000 Analog channel name PB 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 50432D000000 Analog channel name PC 02 Analog channel type FF Scale factor type 0000 Scale ...

Page 660: ...ration parameters have been modified FF Scale factor type 0000 Scale factor offset in Fast Meter message 51432D000000 Analog channel name QC 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 51332D000000 Analog channel name Q3 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 00 Reserved checksum 1 byte checksum of p...

Page 661: ...erate code clear remote bit RB3 22 Operate code set remote bit RB3 42 Operate code pulse remote bit RB3 03 Operate code clear remote bit RB4 23 Operate code set remote bit RB4 43 Operate code pulse remote bit RB4 04 Operate code clear remote bit RB5 24 Operate code set remote bit RB5 44 Operate code pulse remote bit RB5 05 Operate code clear remote bit RB6 25 Operate code set remote bit RB6 45 Ope...

Page 662: ...emote bit RB12 4B Operate code pulse remote bit RB12 0C Operate code clear remote bit RB13 2C Operate code set remote bit RB13 4C Operate code pulse remote bit RB13 0D Operate code clear remote bit RB14 2D Operate code set remote bit RB14 4D Operate code pulse remote bit RB14 0E Operate code clear remote bit RB15 2E Operate code set remote bit RB15 4E Operate code pulse remote bit RB15 0F Operate ...

Page 663: ...T104 SV4T route SV4 timer output to OUT104 via the SET command SV4PU 0 SV4 pickup time 0 SV4DO 30 SV4 dropout time is 30 cycles To pulse the contact send the A5E006430DDB command to the relay A5E3 Fast Operate Breaker Control The external device sends the message shown in Table D 10 to perform a fast breaker open close The relay performs the specified breaker operation if the following conditions ...

Page 664: ...er Fast Operate reset code repeat 00 Fast Operate reset code e g 00 for target reset 54415220520000 Fast Operate reset description string e g TAR R xx Checksum Table D 11 A5CD Fast Operate Reset Definition Block Sheet 2 of 2 Data Description Table D 12 A5ED Fast Operate Reset Command Data Description A5ED Command 06 Message Length always 6 00 Operate Code e g 00 for target reset TAR R 01 Operate V...

Page 665: ...25A1 25A2 RCSF OPTMN RSTMN 0A70 79RS 79CY 79LO SH0 SH1 SH2 SH3 SH4 0AAD MAB4 MBC4 MCA4 MAG4 MBG4 MCG4 0A01 XAG1 XBG1 XCG1 XAG2 XBG2 XCG2 XAG3 XBG3 0C16 XCG3 XAG4 XBG4 XCG4 OSTI OSTO OST 50ABC 0C79 X5ABC X6ABC OSB OSB1 OSB2 OSB3 OSB4 UBOSB 0CE0 50G4 67G4 67G4T MPP1 MABC1 MPP2 MABC2 0B74 50Q1 67Q1 67Q1T 50Q2 67Q2 67Q2T 59N1 59N2 0B90 50Q3 67Q3 67Q3T 50Q4 67Q4 67Q4T 59Q 59V1 0B75 51Q 51QT 51QR Z2PGS ...

Page 666: ...or example If SER1 50G1 OUT101 SER2 67P1T SER3 OUT102 52A the name string will be 50G1 OUT101 67P1T OUT102 52A If there are more than eight settings in SER the SNS message will have several rows Each row will have eight strings followed by the checksum and carriage return The last row may have fewer than eight strings SNS message for the SEL 311C is STX xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy...

Page 667: ...low an external device to obtain data from the relay in a format which directly imports into spreadsheet or database programs and which can be validated with a checksum The SEL 311C provides the following Compressed ASCII commands Table E 1 Compressed ASCII Commands Command Description CASCII Configuration message CSTATUS Status message CHISTORY History message CEVENT Event message CSUMMARY Event ...

Page 668: ...ompressed ASCII command as sent by the requesting device The naming convention for the Compressed ASCII commands is a C preceding the typical command For example CSTATUS abbreviated to CST is the Compressed STATUS command 11 the minimum access level at which the command is available H identifies a header line to precede one or more data lines is the number of subsequent ASCII names For example 21H...

Page 669: ...mpressed ASCII Commands CASCII Command General Format If a Compressed ASCII request is made for data that are not available e g the history buffer is empty or invalid event request the relay responds with the following message STX No Data Available 0668 CR ETX ...

Page 670: ...HOUR MIN SEC MSEC 0BB9 CR 1D I I I I I I I 05F4 CR 14H FREQ SAM CYC_A SAM CYC_D NUM_OF_CYC EVENT LOCATION SHOT TARGETS IA IB IC IP IG 3I2 1B59 CR 1D F I I I 6S F I 22S I I I I I I 0BAB CR 14H IA IB IC IP IG VA kV VB kV VC kV VS kV V1MEM FREQ V DC TRIG Names of elements in the relay word separated by spaces F382 CR 240D I I I I I F F F F F I F 2S 108S 0C35 CR CEV R 1 021D CR 1H FID 022C CR 1D 45S 0...

Page 671: ...B7A TMB6A TMB5A TMB4A TMB3A TMB2A TMB1A RMB8B RMB7B RMB6B RMB5B RMB4B RMB3B RMB2B RMB1B TMB8B TMB7B TMB6B TMB5B TMB4B TMB3B TMB2B TMB1B LBOKB CBADB RBADB ROKB LBOKA CBADA RBADA ROKA 3D5A CR 2D 1S 10S 02FE CR ETX See CEVENT Command SEL 311C on page E 8 for the definition of the Names of elements in the relay word separated by spaces field where YYYY the 4 byte hex ASCII representation of the checks...

Page 672: ... MONTH DAY YEAR HOUR MIN SEC MSEC yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR IA IB IC IP VA VB VC VS MOF 5V_PS 5V_REG 5V_REG 12V_PS 12V_PS 15V_PS 15V_PS TEMP RAM ROM A D CR_RAM EEPROM IO_BRD yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR ETX where xxxx the data values corresponding to the first line labels ...

Page 673: ...yyy CR REC_NUM MONTH DAY YEAR HOUR MIN SEC MSEC EVENT LOCATION CURR FREQ GROUP SHOT TARGETS EVE_ID yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR ETX the last line is then repeated for each record If the history buffer is empty the relay responds STX No Data Available 0668 CR ETX where xxxx the data values corresponding to the first line labels yyyy...

Page 674: ...set command surrounded by quotes yyyy CR ETX where n event number 1 43 if LER 15 1 25 if LER 30 1 13 if LER 60 1 4 if LER 180 defaults to 1 Sx x samples per cycle 4 or 16 defaults to 4 If Sx parameter is present it overrides the L parameter Ly y cycles event report length 1 LER for filtered event reports 1 LER 1 for raw event reports defaults to LER if not specified L 16 samples per cycle overridd...

Page 675: ...2 OUT101 M3P M3PT Z3G Z3GT M4P M4PT Z4G Z4GT Z3T Z4T 50P2 67P2 67P2T 50P3 67P3 67P3T 50G2 67G2 67G2T 50G3 67G3 67G3T 51P 51PT 51PR Z1X 59VA MAB3 MBC3 MCA3 MAG3 MBG3 MCG3 27S 59S 59VP 59VS SF 25A1 25A2 RCSF OPTMN RSTMN 79RS 79CY 79LO SH0 SH1 SH2 SH3 SH4 MAB4 MBC4 MCA4 MAG4 MBG4 MCG4 XAG1 XBG1 XCG1 XAG2 XBG2 XCG2 XAG3 XBG3 XCG3 XAG4 XBG4 XCG4 OSTI OSTO OST 50ABC X5ABC X6ABC OSB OSB1 OSB2 OSB3 OSB4 U...

Page 676: ...s in the relay word separated by spaces field matches the order of the HEX ASCII Relay Word In the example above the first two bytes in the HEX ASCII Relay Word are 10 In binary this evaluates to 00010000 Mapping the labels to the bits yields In this example the 67P1 element is asserted logical 1 all others are deasserted logical 0 Table E 2 Mapping Bits to Labels Labels Z1T Z2T 50P1 67P1 67P1T 50...

Page 677: ...010 0 00 0 010 45 00 0 010 0 00 0E35 CR IA IA_DEG IB IB_DEG IC IC_DEG IP IP_DEG IG IG_DEG 3I2 3I2_DEG VA VA_DEG VB VB_DEG VC VC_DEG 1D07 CR 542 150 42 9743 178 72 5523 178 02 10097 179 15 15746 177 54 6384 16 00 101 190 179 31 19 430 177 38 101 610 179 61 183D CR TRIG RMB8A RMB7A RMB6A RMB5A RMB4A RMB3A RMB2A RMB1A TMB8A TMB7A TMB6A TMB5A TMB4A TMB3A TMB2A TMB1A RMB8B RMB7B RMB6B RMB5B RMB4B RMB3B...

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Page 679: ...rent can transiently appear when a circuit breaker is closed and balanced load current suddenly appears To avoid tripping for this transient condition use negative sequence definite time overcurrent elements 67Q1T through 67Q4T with at least 1 5 cycles of time delay transient condition lasts less than 1 5 cycles For example make time delay setting 67Q1D 1 50 for negative sequence definite time ove...

Page 680: ...ad current suddenly appears Refer to Figure 3 26 for more information on negative sequence time overcurrent element 51QT To avoid having negative sequence time overcurrent element 51QT with such low time dial settings trip for this transient negative sequence current condition make settings similar to the following SV6PU 1 50 cycles minimum response time transient condition lasts less than 1 5 cyc...

Page 681: ...f the coordination guidelines and example given in this appendix The paper also contains analyses of system unbalances and faults and the negative sequence current generated by such conditions A F Elneweihi Useful Applications for Negative Sequence Overcurrent Relaying 22nd Annual Western Protective Relay Conference Spokane Washington October 24 26 1995 This conference paper gives many good applic...

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Page 683: ...phasors Overview The SEL 311C provides Phasor Measurement Control Unit PMCU capabilities when connected to an IRIG B time source with an accuracy of 10 µs or better Synchrophasor data are available via the MET PM ASCII command and the SEL Fast Message Unsolicited Write message ...

Page 684: ...tion and control schemes Small signal analysis Power system disturbance analysis The SEL 311C Global settings class contains the synchrophasor settings including the choice of transmitted synchrophasor data set The Port settings class selects which serial port s can be used for synchrophasor protocol use See Settings on page G 8 The SEL 311C timekeeping function generates status Relay Word bits th...

Page 685: ...During steady state conditions the SEL 311C synchrophasor values can be directly compared to values from other phasor measurement units that conform to C37 118 Synchrophasor values are available for the full frequency range of the SEL 311C Figure G 1 Phase Reference The TSOK Relay Word bit asserts when the SEL 311C has determined that the IRIG B time source has sufficient accuracy and the synchrop...

Page 686: ...the measured phasor angles in order to create the corrected phasor angles as shown in Figure G 2 The VCOMP and ICOMP settings may be positive or negative in value Figure G 2 Waveform at Relay Terminals May Have a Phase Shift If the shift of the measured signal is known in the time domain it can be converted into an angular shift using Equation G 1 Equation G 1 Figure G 3 Correction of Measured Pha...

Page 687: ... Message Protocol Format Field Description Hex Data Header Synchrophasor Fast Message A546 Frame Size Synchrophasor Data Sizea a The synchrophasor data size is dependent on the PHDATAV and PHDATAI settings as shown in Table G 8 XX Routing Must be 0000000000 for this application 0000000000 Status Byte Must be 00 for this application 00 Function Code 20h Code for unsolicited write messages 20 Sequen...

Page 688: ...Fast Message commands including commands to start and stop synchrophasor data transmission Table G 2 Unsolicited Fast Message Enable Packet Field Description Hex Data Header Synchrophasor Fast Message A546 Frame Size 18 bytes 12 Routing Must be 0000000000 for this application 0000000000 Status Byte YY 00 acknowledge is not requested YY 01 acknowledge is requested YY Function Code 01h Enable unsoli...

Page 689: ...ge Message Period Hex Fast Messages Sent This Number of Seconds After the Top of Each Minute Number of Fast Messages per Minute 0064h 0 1 2 3 4 5 59 60 00C8h 0 2 4 6 8 10 58 30 012Ch 0 3 6 9 12 15 57 20 0190h 0 4 8 12 15 56 15 01F4h 0 5 10 15 20 55 12 0258h 0 6 12 18 24 54 10 03E8h 0 10 20 30 40 50 6 05DCh 0 15 30 45 4 07D0h 0 20 40 3 0BB8h 0 30 2 1770h 0 1 ...

Page 690: ...ion Default EPMU Enable Synchronized Phasor Measurement Y N Na a Set EPMU Y to access the remaining settings PMID PMU Hardware ID 1 PHDATAV Phasor Data Set Voltages V1 ALL V1 VCOMP Voltage Angle Compensation Factor 179 99 to 180 degrees 0 00 PHDATAIb b Setting hidden when PHDATAV V1 Phasor Data Set Currents ALL NA NA ICOMP Current Angle Compensation Factor 179 99 to 180 degrees 0 00 TS_TYPE Time S...

Page 691: ...h data to transmit PHDATAV and PHDATAI determine the minimum port SPEED necessary to support the synchrophasor data packet rate and size see Table G 8 PHDATAV V1 will transmit only positive sequence voltage V1 PHDATAV ALL will transmit V1 VA VB and VC Table G 8 describes the order of synchrophasors inside the data packet The VCOMP setting allows correction for any steady state voltage phase errors...

Page 692: ...IG time source When TS_TYPE is set to IEEE the IRIG message is expected to conform to the IEEE C37 118 standard Note that time sources conforming to IEEE C37 118 may be marked as IEEE 1344 compliant The IRIG message includes a UTC offset time quality information a year and a parity bit The SEL 311C qualifies the IRIG field to ensure that the time is valid checks for a time quality value better tha...

Page 693: ... the SEL 311C See IRIG B on page 10 2 Table G 7 Time Synchronization Relay Word Bits Name Description TIRIG Asserts while relay time is based on IRIG B time source TSOK Time Synchronization OK Asserts while time accuracy is of sufficient accuracy for synchrophasor measurement and satisfies TS_TYPE requirements PMDOK Phasor Measurement Data OK Asserts when the SEL 311C is enabled synchrophasors are...

Page 694: ... of the Global settings PHDATAV and PHDATAI The MET PM command can function even when no serial ports are sending fast message synchrophasor data The MET PM command only displays data when the Relay Word bit TSOK logical 1 Figure G 4 shows a sample MET PM command response The synchrophasor data are also available in ACSELERATOR QuickSet and have a similar format to Figure G 4 The MET PM time comma...

Page 695: ...128 600 131 447 ANG DEG 129 896 10 262 111 764 129 48 Phase Currents Pos Sequence Current IA IB IC I1 MAG A 365 261 359 225 379 917 367 912 ANG DEG 114 930 2 786 120 238 117 338 FREQ Hz 60 029 Digitals SV3 SV4 SV5 SV6 SV7 SV8 SV9 SV10 0 0 0 0 0 0 0 0 SV11 SV12 SV13 SV14 SV15 SV16 0 0 0 0 0 0 Figure G 4 Sample MET PM Command Response The Maximum time synchronization error field is taken directly fr...

Page 696: ...bits The selection of synchrophasor data will add to the byte requirements Each synchrophasor quantity will add eight bytes to the message length Table G 8 shows the effect that adding synchrophasor quantities has on the minimum allowed SPEED setting The number of interleaved protocols sharing the same physical port will also impact the minimum allowed SPEED setting Table G 8 shows the setting if ...

Page 697: ...schemes This appendix shows how to set the protection and control elements Relay Word bits in the SELOGIC control equations Additional SELOGIC control equation setting details are available in Section 9 Setting the Relay see also SELOGIC Control Equation Settings Serial Port Command SET L on page SET 16 See SHO Command Show View Settings on page 10 25 for a list of the factory settings included in...

Page 698: ... Table 3 10 and following text The following Relay Word bits are the logic outputs of the phase time overcurrent element 51P indication that the maximum phase current magnitude is above the level of the phase time overcurrent pickup setting 51PP 51PT indication that the phase time overcurrent element has timed out on its curve 51PR indication that the phase time overcurrent element is fully reset ...

Page 699: ... an output contact for pickup testing trip unlatch logic see Example of NOT Operator Applied to Multiple Elements Within Parentheses on page H 5 51PT trip logic see Factory Settings Example Using Setting TR on page 5 4 51PR testing e g assign to an output contact for reset indication Other Relay Word Bits The preceding example was for a phase time overcurrent element demonstrating Relay Word bit o...

Page 700: ...C control equation settings use logic similar to Boolean algebra logic combining Relay Word bits together using one or more of the six SELOGIC control equation operators listed in Table H 1 Operators in a SELOGIC control equation setting are processed in the order shown in Table H 1 SELOGIC Control Equation Parentheses Operator More than one set of parentheses can be used in a SELOGIC control equa...

Page 701: ...N101 NOT IN101 With a 52b contact connected if the circuit breaker is closed the 52b contact is open and input IN101 is de energized IN101 0 logical 0 52A IN101 NOT IN101 NOT 0 1 Thus the SELOGIC control equation circuit breaker status setting 52A sees a closed circuit breaker With a 52b contact connected if the circuit breaker is open the 52b contact is closed and input IN101 is energized IN101 1...

Page 702: ... Word bits in this example are 51P Maximum phase current above pickup setting 51PP for phase time overcurrent element 51PT see Figure 3 24 51G Maximum residual ground current above pickup setting 51GP for residual ground time overcurrent element 51GT see Figure 3 25 OUT103 Output contact OUT103 is set as a breaker failure trip output see Output Contacts on page 7 32 When setting ER sees a logical ...

Page 703: ...ators were not applied and setting ER was ER 51P 51G OUT103 the ER setting would not see the assertion of OUT103 because 51G and 51P would continue to be asserted at logical 1 as shown in Figure H 1 SELOGIC Control Equation Falling Edge Operator The falling edge operator is applied to individual Relay Word bits only not to groups of elements within parentheses The falling edge operator operates si...

Page 704: ...asserted off disabled Under the SHO Command Show View Settings on page 10 25 note that a number of the factory SELOGIC control equation settings are set directly to 1 or 0 The individual SELOGIC control equation settings explanations referenced in SELOGIC Control Equation Settings Serial Port Command SET L on page SET 16 discuss whether it makes logical sense to set the given SELOGIC control equat...

Page 705: ...C control equation trip setting TR Note that the SELOGIC control equation variables SELOGIC control equation settings SV1 through SV16 are processed after the trip equation SELOGIC control equation trip setting TR Thus any tripping via Relay Word bits SV1 through SV16 can be delayed as much as 1 4 cycle For most applications this is probably of no consequence The SELOGIC control equation settings ...

Page 706: ...bits are processed in a predetermined order They are processed every quarter cycle 1 4 cycle and the Relay Word bit states logical 1 or logical 0 are updated with each quarter cycle pass Thus the relay processing interval is 1 4 cycle Once a Relay Word bit is asserted it retains the state logical 1 or logical 0 until it is updated again in the next processing interval Logical outputs of SELOGIC co...

Page 707: ...lable with the option to support Distributed Network Protocol DNP3 Level 2 Slave protocol This includes access to metering data protection elements Relay Word contact I O targets sequential events recorder breaker monitor relay summary event reports settings groups and time synchronization The SEL 311C supports DNP point remapping ...

Page 708: ...seconds before deasserting RTS If the PSTDLY time delay is in progress RTS still high following a transmission and another transmission is initiated the SEL 311C transmits the message without completing the PSTDLY delay and without any preceding PREDLY delay The RTS CTS handshaking may be completely disabled by setting PREDLY Table I 1 Data Needed to Configure a Port for DNP Label Description Defa...

Page 709: ... Configuration to OFF In this case RTS is forced high and CTS is ignored with only received characters acting as a DCD indication The timing is the same as above but PREDLY functions as if it were set to 0 and RTS is not actually deasserted after the PSTDLY time delay expires ...

Page 710: ...e will be corrupted Thus the number of retries should be set higher on noisy channels Set the data link time out long enough to allow for the worst case response of the master plus transmission time When the SEL 311C decides to transmit on the DNP link it has to wait if the physical connection is in use The SEL 311C monitors physical connections by using CTS input treated as a Data Carrier Detect ...

Page 711: ...c The master polls for static Class 0 data only Set ECLASS 0 Set UNSOL N Polled Report by Exception The master polls frequently for event data and occasionally for static data Set ECLASS to a non zero value Set UNSOL N Unsolicited Report by Exception The slave devices send unsolicited event data to the master and the master occasionally sends integrity polls for static data Set ECLASS to a non zer...

Page 712: ...ragment size transmitted received octets 2048 Maximum application layer retries None Requires application layer confirmation When reporting Event Data Data link confirm time out Configurable Complete application fragment time out None Application confirm time out Configurable Complete Application response time out None Executes control WRITE binary outputs Always Executes control SELECT OPERATE Al...

Page 713: ...tus 1 0 1 6 7 8 129 0 1 7 8 2 0 Binary Input Change All Variations 1 6 7 8 2 1 Binary Input Change Without Time 1 6 7 8 129 17 28 2 2a Binary Input Change With Time 1 6 7 8 129 130 17 28 2 3 Binary Input Change With Relative Time 1 6 7 8 129 17 28 10 0 Binary Output All Variations 1 0 1 6 7 8 10 1 Binary Output 10 2a Binary Output Status 1 0 1 6 7 8 129 0 1 12 0 Control Block All Variations 12 1 C...

Page 714: ...ter Change Event With Time 1 6 7 8 129 17 28 22 6 16 Bit Counter Change Event With Time 1 6 7 8 129 17 28 22 7 32 Bit Delta Counter Change Event With Time 22 8 16 Bit Delta Counter Change Event With Time 23 0 Frozen Counter Event All Variations 23 1 32 Bit Frozen Counter Event Without Time 23 2 16 Bit Frozen Counter Event Without Time 23 3 32 Bit Frozen Delta Counter Event Without Time 23 4 16 Bit...

Page 715: ... Time 33 2 16 Bit Frozen Analog Event Without Time 33 3 32 Bit Frozen Analog Event With Time 33 4 16 Bit Frozen Analog Event With Time 40 0 Analog Output Status All Variations 1 0 1 6 7 8 40 1 32 Bit Analog Output Status 1 0 1 6 7 8 129 0 1 7 8 40 2a 16 Bit Analog Output Status 1 0 1 6 7 8 129 0 1 7 8 41 0 Analog Output Block All Variations 41 1 32 Bit Analog Output Block 3 4 5 6 17 28 129 echo of...

Page 716: ... Binary Coded Decimal No object 13 14 23 a Default Table I 4 SEL 311C Relay DNP Object Table Sheet 4 of 4 Object Request supported Response may generate Obj Var Description Function Codes decimal Qualifier Codes hex Function Codes decimal Qualifier Codes hex Table I 5 SEL 311C Wye DNP Data Map Sheet 1 of 3 DNP Object Type Index Description 01 02 000 499 Relay Word where 51 is 0 and 81D1T is 431 01...

Page 717: ...ude kV and angle 30 32 14 15 VS magnitude kV and angle 30 32 16 17 IG magnitude and angle 30 32 18 19 I1 magnitude and angle 30 32 20 21 3I2 magnitude and angle 30 32 22 23 3V0 magnitude kV and angle 30 32 24 25 V1 magnitude kV and angle 30 32 26 27 V2 magnitude kV and angle 30 32 28 31 MW A B C and 3 phase 30 32 32 35 MVAR A B C and 3 phase 30 32 36 39 Power factor A B C and 3 phase 30 32 40 Freq...

Page 718: ... Inputs objects 30 and 32 are supported as defined by the preceding table The values are reported in primary units Analog inputs 28 35 42 57 63 78 84 102 and 104 are further scaled according to the DECPLM setting e g if DECPLM is 3 then the value is multiplied by 1000 Analog inputs 58 62 79 83 and the even numbered points in 0 7 and 16 21 current magnitudes are scaled according to the DECPLA setti...

Page 719: ... information has not been read and the related analogs 104 111 do not contain valid data Control Relay Output Blocks object 12 variation 1 are supported The control relays correspond to the remote bits and other functions as shown above The Trip Close bits take precedence over the control field The control field is interpreted as follows Value Event Cause 1 Trigger command 2 Pulse command 4 Trip e...

Page 720: ...ritten to index 0 is outside of the range 1 through 6 the relay will not accept the value and will return a hardware error status Relay Summary Event Data Whenever there is unread relay event summary data fault data binary input point 1023 will be set In order to load the next available relay event summary the master should pulse binary output point 23 This will cause the event summary analogs poi...

Page 721: ...lt Map ETX If the DNP command is issued with an S parameter the relay displays only the analog map likewise a T causes the relay to display only the binary map If the map checksum is determined to be invalid the map will be reported as corrupted during a display command as follows DNP T STX Binaries Map Corrupted ETX If the map is determined to be corrupted DNP will respond to all master data requ...

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Page 723: ...e time out interval seconds 0 0 30 0 STIMEO Number of data link retries 0 for no confirm 1 15 DRETRY Data Link Time out interval seconds 0 5 DTIMEO Minimum Delay from DCD to transmission seconds 0 00 1 00 MINDLY Maximum Delay from DCD to transmission seconds 0 00 1 00 MAXDLY Transmission delay from RTS assertion seconds OFF 0 00 30 00 PREDLY Post transmit RTS deassertion delay seconds 0 00 30 00 P...

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Page 725: ...ferentiated by the channel specifiers A and B Bits transmitted are called TMB1x through TMB8x where x is the channel specifier e g A or B and are controlled by the corresponding SELOGIC control equations Bits received are called RMB1x through RMB8x and are usable as inputs to any SELOGIC control equations Channel status bits are called ROKx RBADx CBADx and LBOKx and are also usable as inputs to an...

Page 726: ... described below The relay will assert ROKx only after successful synchronization as described below and two consecutive messages pass all of the data checks described above After ROKx is reasserted received data may be delayed while passing through the security counters described below Transfer of received data to RMB1x RMB8x is supervised by eight user programmable pickup dropout security counte...

Page 727: ...will go all the way around the loop and will eventually be received by the originating node It will then be killed and data transmission will resume This method of synchronization allows the relays to reliably determine which byte is the first byte of the message It also forces mis synchronized UARTs to become re synchronized On the down side this method takes down the entire loop for a receive er...

Page 728: ...will assert a user accessible flag hereafter called RBADx When channel unavailability exceeds a user settable threshold the relay will assert a user accessible flag hereafter called CBADx Relay disabled Relay protection functions disabled as during power up or change in settings or settings group Loop Back Loop back enabled Error conditions followed by L occurred while the system was in loop back ...

Page 729: ...Pulsar MBT 9600 modem is identical to the standard MIRRORED BITS protocol with the following exceptions The relay injects a delay idle time between messages The length of the delay is one relay processing interval The relay resets RTS to a negative voltage at the EIA 232 connector for MIRRORED BITS communications using this specification The relay sets RTS to a positive voltage at the EIA 232 conn...

Page 730: ...connector which the modem will deassert if the channel has too many errors The modem uses the relay s RTS signal to determine whether the new or old MIRRORED BITS protocol is in use Mirrored Bits Receive bad pickup 1 10000 sec RBADPU 60 Use the RBADPU setting to determine how long a channel error must last before the relay element RBADA is asserted RBADA is deasserted when the channel error is cor...

Page 731: ... RMB_ Debounce PU msgs 1 8 RMB5PU 1 Mirrored Bits RMB_ Debounce DO msgs 1 8 RMB5DO 1 Mirrored Bits RMB_ Debounce PU msgs 1 8 RMB6PU 1 Mirrored Bits RMB_ Debounce DO msgs 1 8 RMB6DO 1 Mirrored Bits RMB_ Debounce PU msgs 1 8 RMB7PU 1 Mirrored Bits RMB_ Debounce DO msgs 1 8 RMB7DO 1 Mirrored Bits RMB_ Debounce PU msgs 1 8 RMB8PU 1 Mirrored Bits RMB_ Debounce DO msgs 1 8 RMB8DO 1 Supervise the transfe...

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Page 733: ...terface consists of ASCII character commands and reports that are intelligible to people using a terminal or terminal emulation package The binary data streams can interrupt the ASCII data stream to obtain information and then allow the ASCII data stream to continue This mechanism allows a single communications channel to be used for ASCII communications e g transmission of a long event report int...

Page 734: ...er SER event report for any change of state in any one of the elements listed in the SER1 SER2 or SER3 trigger settings Nonvolatile memory is used to store the latest 512 rows of the SER event report so they can be retained during power loss The nonvolatile memory is rated for a finite number of writes Exceeding the limit can result in an EEPROM self test failure An average of four state changes p...

Page 735: ...ER messages 2 When SER records are triggered in the SEL 311C the relay responds with an unsolicited Fast SER message If this message has a valid checksum it must be acknowledged by sending an acknowledge message with the same response number as contained in the original message The relay will wait approximately 100 ms to 500 ms to receive an acknowledge message at which time the relay will resend ...

Page 736: ...s it If there are more than nn new records available or if the first and last record are separated by more than 16 seconds the relay will break the transmission into multiple messages so that no message contains more than nn records and the first and last record of each message are separated by no more than 16 seconds If the function to enable is not 18 or the function code is not recognized the r...

Page 737: ...s function code is also passed as data in the Enable Unsolicited Data Transfer and the Disable Unsolicited Data Transfer messages to indicate which type of Fast SER data should be enabled or disabled The message format for function code 18 is shown in Table K 3 Table K 2 Message Format for Function Code 02 Data Description A546 Message header 10 Message length 16 decimal 0000000000 Five bytes rese...

Page 738: ...fset of last element in microseconds since time indicated in the time of day field FFFFFFFE Four byte end of records flag ssssssss Packed four byte element status for up to 32 elements LSB for the 1st element cccc Two byte CRC 16 checkcode for message Table K 4 Format of Message if SER Records Have Been Lost Sheet 1 of 2 Data Description A546 Message header 22 Message length 34 decimal 0000000000 ...

Page 739: ...ansfer message to which it responds 2 Unsuccessful acknowledge for Enable Unsolicited Data Transfer message from a relay with all of SER1 SER2 and SER3 set to NA A5 46 0E 00 00 00 00 00 00 81 02 XX cc cc XX is as same as the response number in the Enable Unsolicited Data Transfer message to which it responds 00000000 Element status unused cccc Two byte CRC 16 checkcode for message Table K 4 Format...

Page 740: ...dicates that the SER record is due to setting change An element index of FD indicates that the element identified in this SER record is no longer in the SER trigger settings When the relay sends an SER message packet it will put a sequential number 0 1 2 3 0 1 into the response number If the relay does not receive an acknowledge from the master before approximately 500 mS the relay will resend the...

Page 741: ...ed Logic Simulator Analyze power system events from SEL relays with integrated Waveform and Harmonic Analysis tools Communicate with SEL devices via an HMI interface with integrated Meter and Control functions Create manage copy merge and read relay settings with a settings database manager This document gives instructions for installing the ACSELERATOR QuickSet software A Quick Tour guide is avai...

Page 742: ...s Table L 1 ACSELERATOR QuickSet System Requirements CPU Pentium class recommended 90 MHz or faster Operating System Windows 95 98 with 16 MB RAM 32 MB RAM recommended Windows NT4 SP3 or later with 32 MB RAM 64 MB RAM recommended Windows 2000 with 64 MB RAM Disk Space 25 MB Communications EIA 232 serial port for communicating with the relay CD Drive Required for installation ...

Page 743: ...rom the windows start menu and type in the following command D SETUP substitute D with the CD ROM drive letter of your PC Step 4 Follow the steps that appear on the screen The installation program will perform all the necessary steps to load the ACSELERATOR QuickSet software onto your PC It is necessary to have the correct comctl32 dll file installed on your computer in order to see the toolbar bu...

Page 744: ...kSet Software Starting the ACSELERATOR QuickSet Software You can start the ACSELERATOR QuickSet software in the following ways Step 1 Double click the ACSELERATOR QuickSet software icon if you have a desktop shortcut Step 2 Choose Programs SEL Applications and select the ACSELERATOR QuickSet software icon to start the program ...

Page 745: ...LER 1 for raw event reports defaults to LER if not specified L 16 samples per cycle overridden by the Sx parameter if present R specifies raw unfiltered data defaults to 16 samples per cycle unless overridden by the Sx parameter Defaults to LER 1 cycles in length unless overridden with the Ly parameter C specifies 16 samples per cycle LER cycle length P precise to synchrophasor level accuracy CHIS...

Page 746: ...vel 0 Terminates SEL Distributed Port Switch Protocol LMD protocol connection Available in all access levels SER n Show the latest n rows in the Sequential Events Recorder SER event report SER m n Show rows m through n in the Sequential Events Recorder SER event report SER d1 Show rows in the Sequential Events Recorder SER event report from date d1 SER d1 d2 Show rows in the Sequential Events Reco...

Page 747: ... contacts All Access Level 1 and Access Level B commands are available from Access Level 2 The screen prompt is CON n Control Remote Bit RBn Remote Bit n n 1 through 8 Execute CON n and the relay responds CONTROL RBn Then reply with one of the following SRB n set Remote Bit n assert RBn CRB n clear Remote Bit n deassert RBn PRB n pulse Remote Bit n assert RBn for 1 4 cycle COP m n Copy relay and l...

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