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Schweitzer Engineering SEL-351P, Quick Start Manual

The Schweitzer Engineering SEL-351P is an advanced protective relay system designed for seamless integration in power systems. Ensure a quick and smooth setup by referring to our comprehensive Quick Start Manual. Download the manual for free from manualshive.com, and get started with this top-notch product effortlessly.

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Date Code 990430 

Breaker/Recloser Monitor, Battery System Monitor, 

i 

 

Metering, and Load Profile Functions 

 

SEL-351P Manual Técnico 

TABLE OF CONTENTS 

SECTION 8: BREAKER/RECLOSER MONITOR, BATTERY 
SYSTEM MONITOR, METERING, AND LOAD PROFILE 
FUNCTIONS............................................................................................8-1 

Introduction...................................................................................................................................8-1 
Breaker/Recloser Contact Wear Monitor .....................................................................................8-1 

Breaker Monitor Setting Example ........................................................................................8-4 

Breaker Maintenance Curve Details .............................................................................8-6 
Operation of SEL

OGIC

®

 Control Equation Breaker Monitor Initiation Setting 

BKMON ................................................................................................................8-8 

Breaker Monitor Operation Example....................................................................................8-9 

0% to 10% Breaker Wear..............................................................................................8-9 
10% to 25% Breaker Wear............................................................................................8-9 
25% to 50% Breaker Wear............................................................................................8-9 
50% to 100% Breaker Wear........................................................................................8-11 

Breaker Monitor Output......................................................................................................8-11 

Example Applications .................................................................................................8-11 

View or Reset Breaker Monitor Information – Including Trip Operation Counters ..........8-11 

Via Serial Port.............................................................................................................8-11 
Via Front Panel ...........................................................................................................8-12 

Determination of Control Initiated Trips and Externally Initiated Trips............................8-12 

Factory Default Setting Example ................................................................................8-13 
Additional Example ....................................................................................................8-13 

Battery System Monitor..............................................................................................................8-14 

Battery System Operation ...................................................................................................8-15 

SEL-351P Puts Itself “To Sleep” ................................................................................8-15 
Keep 12 Vdc on While SEL-351P is “Asleep”...........................................................8-16 
“Wake Up” the SEL-351P...........................................................................................8-16 

Battery System Diagnostics ................................................................................................8-16 

Automatic Battery Load Test......................................................................................8-17 
Battery Load Test via Front Panel ..............................................................................8-17 
Battery Load Test via Serial Port................................................................................8-18 

Battery Status ......................................................................................................................8-19 
Additional Application .......................................................................................................8-19 

Metering......................................................................................................................................8-20 

Demand Metering ...............................................................................................................8-21 

Comparison of Thermal and Rolling Demand Meters................................................8-21 
Thermal Demand Meter Response (EDEM = THM)..................................................8-22 
Rolling Demand Meter Response (EDEM = ROL) ....................................................8-23 

Time = 0 Minutes ................................................................................................8-24 
Time = 5 Minutes ................................................................................................8-24 
Time = 10 Minutes ..............................................................................................8-25 
Time = 15 Minutes ..............................................................................................8-25 

Demand Meter Settings...............................................................................................8-25 
Demand Current Logic Output Application – Raise Pickup for Unbalance 

Current.................................................................................................................8-27 

Summary of Contents for SEL-351P

Page 1: ...S E L 3 5 1 P C O N T R O L E D O R E L I G A D O R Quick Start Installation and User s Guide April 30 1999 ...

Page 2: ...aring in this document are the trademark or registered trademark of their respective holders Schweitzer Engineering Laboratories Inc SELOGIC and are registered trademarks of Schweitzer Engineering Laboratories Inc Copyright SEL 1999 All rights reserved Printed in USA This product is covered by U S Patent Numbers 5 208 545 5 317 472 5 602 707 5 515 227 5 652 688 5 349 490 5 365 396 5 041 737 5 479 ...

Page 3: ...ils 10 24 Vdc Whetting Voltage 10 Capacitor Voltage Monitor and Charger Control 10 Capacitor Charger Power 10 Trip and Close Output Contacts 10 SF6 Pressure Sensor 11 Checks Before the SEL 351P is Put in Service 11 COMMUNICATIONS 12 Getting Started With Communications 12 Communications Connections Example 13 Serial Ports 14 Serial Port Default Settings 14 EIA 232 Pinout Functions for Ports 2 3 and...

Page 4: ...out Regularly Installed Apparatus 67 Logic Settings Changes 67 Front Panel Status LEDs 67 Recloser Simulator 68 Output Contacts 68 Overcurrent Element Timing Test Setup 69 BATTERY 70 Battery Operation Overview 70 Battery Related Settings 70 Battery Status 70 Battery Status via Front Panel 70 Battery Status via Serial Port 71 Automatic Battery Load Test 71 Battery Load Test via Front Panel 72 Batte...

Page 5: ... Curve Designations 35 Table 8 EZ Settings Quick Reference 37 Table 9 Seconds to Cycles Conversion 60 Hz 46 Table 10 Recloser Interrupt Data 60 FIGURES Figure 1 SEL 351P Recloser Control Dimensions and Panel Cutout 3 Figure 2 SEL 351P Recloser Control Side Panel 4 Figure 3 SEL 351P Relay Inputs Outputs and Communications Ports 5 Figure 4 Trip and Close Circuit Breaker Status and SF6 Pressure Conne...

Page 6: ......

Page 7: ...tions are covered in this documentation Table of Contents Settings Introduction Testing Installation Battery Communications Specifications Front Panel Interface Safety Information This Quick Start Installation and User s Guide does not cover all of the possible conditions or circumstances that can occur during the installation operation or testing of the SEL 351P If additional information is neces...

Page 8: ...Failure to comply can result in control and recloser misoperation equipment damage and personal injury WARNING Before installing operating maintaining or testing this equipment carefully read and understand the contents of this guide Improper installation handling or maintenance can result in death severe personal injury and or equipment damage WARNING This equipment is not intended to protect hum...

Page 9: ...Installation SEL 351P Quick Start Installation and User s Guide Portuguese 3 INSTALLATION Figure 1 SEL 351P Recloser Control Dimensions and Panel Cutout ...

Page 10: ...ined in the front of Section 10 in the SEL 351P Manual Técnico Ratings Ratings for optoisolated inputs output contacts current inputs voltage inputs and power inputs outputs are given in the Specifications section N C Symbol A few of the connector terminals are labeled N C not connected The N C option shown in the VOLTAGES connector J3 legend e g VS VS or N C refers to an ordering option order all...

Page 11: ...ol Power Supply Not Connected 24 Vdc Power Supply 120 Vac 24 Vdc DB9 WAKE UP PORT SIDE IRIG B 1 2 3 4 5 6 7 8 apertar por 3 seg BLOQUEIO SEF HABILITADO PROTEÇÃO BLOQUEADA TERRA HABILITADO DESPERTAR RELIGADOR FECHADO HABILITADO REMOTO FECHAR ALTERNATIVOS AJUSTES ABERTO ABRIR RELIGADOR FRONT PANEL OPERATOR CONTROLS CONNECTOR J3 CONNECTOR J10 CONNECTOR J6 24 Vdc 12 Vdc FRONT PANEL TARGET LEDS FONTE C...

Page 12: ... fully charged b a breaker aux contacts 52b 52a CONTROL connector J5 recloser partial see Note 1 Note 1 Terminal 9 is also the return for the 24 Vdc whetting voltage on terminal 1 when terminal 1 is paralleled to additional applications e g to whet opto inputs IN101 IN106 Terminal 1 has a load limit of 0 1 A and should be fused for protection Bussman GMD 0 125 fuse or equivalent recloser partial D...

Page 13: ...minal to ground before making any other connection on the side panel The GROUND spade is 0 25 x 0 03 inches 6 4 x 0 8 mm Extra I O The extra I O output contacts OUT101 through ALARM and optoisolated inputs IN101 through IN106 is not needed for the basic recloser control functions The extra I O is available for SCADA connection or other control and is not polarity sensitive The optoisolated inputs ...

Page 14: ...put ordering options are described briefly in the side notes with Figure 2 Voltage input VA VOLTAGES connector J3 terminals 10 and 5 also provides the frequency measurement e g for underfrequency load shedding Voltage input VA is typically connected in parallel with the 120 Vac power input POWER connector J6 terminals 8 and 4 when three phase voltage is not brought to the SEL 351P With factory set...

Page 15: ...ower the SEL 351P and external trip close capacitors when 120 Vac is not present is connected to POWER connector J6 terminals 6 and 2 See the Battery section for more details NOTE Anytime 120 Vac power is applied to the SEL 351P the unit automatically turns on If no power is connected to the SEL 351P unit is off and then 24 Vdc battery power is connected to POWER connector J6 terminals 6 and 2 the...

Page 16: ...r is fully charged to 80 V the close capacitor is likewise fully charged Terminal 14 indicates when the close capacitor is charged to at least 20 V Exceeding this 20 V threshold causes the capacitor charger control output terminals 10 and 2 to go below 24 Vdc it is nominally 40 Vdc This low output signal to the external capacitor charger causes the charger to go to a higher charge rate to quickly ...

Page 17: ...ion for more EZ settings details Checks Before the SEL 351P is Put in Service CAUTION Do not connect the SEL 351P to an energized recloser until all control settings have been properly programmed and verified and all front panel operator controls are in their proper state see Figure 7 Refer to the Settings section of this guide for programming procedures Failure to comply can result in control and...

Page 18: ...properly installed and that the settings have been programmed by qualified personnel Become familiar with and understand the information presented in the Communications Front Panel Interface and Settings sections For serial port communications the previous two precautions apply You must also carry out the following Select the appropriate communications cable usually SEL Cable C234A see Table 1 Cho...

Page 19: ...EL 351P SEL 351P SEL 2020 Communications Processor SEL 351P 2 SEL 351P 32 DATA AND TIME SYNCHRONIZATION CONNECTIONS SEL 2020 Communications Processor PORT 2 Fiber Optic Cable C273AFZ or C273AF0 SEL 2810 Optical Cable Connection Metallic Cable Connection EIA 485 CONNECTIONS if ordered with EIA 485 port PORT 1 PORT 1 PORT 1 LOCAL CONNECTIONS CONNECT TO THE SEL 2020 ONCE AND COMMUNICATEWITH ANY CONNE...

Page 20: ...l will respond with a prompt which indicates Level 0 access is established see Table 4 EIA 232 Pinout Functions for Ports 2 3 and F Pin Port 2 Port 3 Port F 1 N C or 5 Vdc N C or 5 Vdc N C 2 RXD RXD RXD 3 TXD TXD TXD 4 IRIG B N C N C 5 9 GND GND GND 6 IRIG B N C N C 7 RTS RTS RTS 8 CTS CTS CTS Pin 1 not connected for Ports 2 and 3 when shipped from the factory DWG M351R078 DB 9 Connector Pinout fe...

Page 21: ...nal Ready DSR Data Set Ready Communications Cables Table 1 SEL EIA 232 Serial Communications Cable Guide Connect From Connect To SEL Cable SEL 351P Computer 9 pin C234A SEL 351P Computer 25 pin C227A SEL 351P SEL 2020 or SEL 2030 Communications Processor C273A SEL 351P Modem C222 Other Cables Available Table 1 lists the most commonly used cables see corresponding cable diagrams on the following pa...

Page 22: ...4 RTS 5 CTS 6 DSR 8 DCD 20 DTR DTE Data Terminal Equipment Computer Terminal Printer etc SEL 351P Recloser Control to SEL 2020 2030 Cable C273A SEL 351P SEL 2020 2030 9 Pin Male 9 Pin Male D Subconnector D Subconnector TXD 3 2 RXD RXD 2 3 TXD IRIG 4 4 IRIG GND 5 5 GND IRIG 6 6 IRIG CTS 8 7 RTS RTS 7 8 CTS SEL 351P Recloser Control to Modem Cable C222 SEL 351P DCE Device 9 Pin Male 25 Pin Male D Su...

Page 23: ...date in this manner if Date Format setting DATE_F YMD OUTROS EVE n Show event report number n with 1 4 cycle resolution EVE L n Show event report number n with 1 16 cycle resolution EVE R n Show raw event report number n with 1 16 cycle resolution EVE C n Show compressed event report number n for use with SEL 5601 Analytic Assistant EZA Enter EZ Access Level Access Level E GRO Display active group...

Page 24: ...ings AJUSTE SHO G Show global settings AJUSTE SHO P n Show Port n settings AJUSTE SHO R Show Sequential Events Recorder SER settings SHO T Show text label settings STA Show relay self test status STA C resets self test warnings failures STATUS TAR R Reset the front panel tripping targets TARGET RESET TAR n k Display Relay Word row If n 0 through 59 display row n If n is an element name e g 50A1 di...

Page 25: ...tings parameters and output contacts All Access Level 1 E and B commands are available from Access Level 2 The screen prompt is see Table 4 CON n Control Relay Word 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 ...

Page 26: ...rsion information Event Reports Event reports are automatically triggered at the beginning of a fault and when the SEL 351P issues a trip Event report length is 15 cycles factory default The latest twenty eight 15 cycle event reports are stored in nonvolatile memory To obtain event report information use the EVE command There are numerous options that allow you to customize event information For d...

Page 27: ... to view metering values change recloser control settings obtain event information etc The available serial port commands are listed in Table 2 The commands can be accessed only from the corresponding access level as shown in the table but a higher access level can access the serial port commands in a lower access level Access Level 0 the lowest access level Access Level 1 Access Level E EZ access...

Page 28: ...factory default passwords for Access Levels 1 E B and 2 are shown above To change the password for Access Level E to BIKE enter the following PAS E BIKE ENTER Set After entering new passwords type PAS ENTER to inspect them Verify they are what you intended and record the new passwords Passwords may include up to six characters Valid characters consist of A Z a z 0 9 and Upper and lower case letter...

Page 29: ...disable password protection is with the PAS command see preceding Disable Passwords subsection To change the password jumper position carry out the following steps 1 Deenergize the SEL 351P 2 Disconnect all connections to the SEL 351P remove GROUND last 3 Take SEL 351P to an ESD Electrostatic Discharge protected work area 4 Remove eight Phillips head screws from front and left side panel of SEL 35...

Page 30: ...Communications 24 SEL 351P Quick Start Installation and User s Guide Portuguese Figure 6 Jumper Connector and Major Component Locations on the SEL 351P Recloser Control Main Board ...

Page 31: ...ANEL INTERFACE Topics covered in this section Status and Trip Target LEDs Pushbuttons Operator Controls DWG MP351P058 Display default display shows IA IB IC and IN primary currents Pushbuttons Status and Trip Target LEDs Operator Controls Figure 7 SEL 351P Recloser Control Front Panel Interface ...

Page 32: ...rwise Control in reset state and ready for reclose cycle Ground involved in fault Sensitive earth fault overcurrent element trip Indicates any of the following battery problems discharge test failure disconnected cannot be charged monitor charger failure No closing or auto reclosing can take place via the control Fast curve overcurrent element trip High set overcurrent element trip Phase A B or C ...

Page 33: ...dary functions for the pushbuttons shown in Figure 9 Table 5 Front Panel Pushbutton Secondary Functions Primary Function Secondary Function TARGET RESET HELP Provides help only with front panel SET commands MEDIÇÃO CANCELAR Cancel command edit or escape to upper command level EVENTOS SELEÇÃO Select displayed option or setting STATUS W Scroll left on display OUTROS X Scroll right on display AJUSTE ...

Page 34: ...assword for Front Panel Access Description INST MET 1 None Display instantaneous magnitudes and angles if applicable of meter values ENERGY DISPLAY RESET MET E MET RE 1 1 None None Display energy meter values Reset energy meter values MAX MIN DISPLAY RESET MET M MET RM 1 1 None None Display maximum minimum metering values Reset maximum minimum metering values DEMAND DISPLAY RESET MET D MET RD MET ...

Page 35: ...cess Level Password for Front Panel Access Description BTT BTT NOW E Level E Force 1 Amp load test on battery DATE DAT 1 None Show or set SEL 351P date TIME TIM 1 None Show or set SEL 351P time 79 N A N A None Show SEL 351P set reclosures and current reclose count TAR TAR 1 None Show status of internal SEL 351P elements on LCD display and second row of front panel target LEDs BRK_MON DISPLAY RESET...

Page 36: ... Level E Level E Level 2 Level 2 Level 2 Level 2 Set EZ settings group 1 6 Set FZ settings global EZ settings Set GROUP settings group 1 6 Set GLOBAL settings Set PORT settings Set passwords CNTRL Primary Functions Corresponding Serial Port Command Access Level Password for Front Panel Access Description EXTRA CONTROL POSITION OPERATE N A N A None View position of or operate extra user configured ...

Page 37: ...ITADO Press the AJUSTES ALTERNATIVOS operator control pushbutton to switch the active setting group between the main setting group Setting Group 1 and the alternate setting group Setting Group 2 Corresponding LED illuminates to indicate that the alternate setting group is active AJUSTES ALTERNATIVOS Continually press the BLOQUEIO operator control pushbutton for three 3 seconds to engage disengage ...

Page 38: ...Press the FECHAR operator control pushbutton to close the recloser Corresponding RELIGADOR FECHADO LED illuminates to indicate the recloser is closed The FECHAR operator control pushbutton does not have to be continually pressed to allow for cold load pickup i e disable fast curves and desensitize delay curves and SEF element There is automatic allowance for cold load pickup See Cold Load Pickup S...

Page 39: ...control comes with no set delay in the factory settings With a set delay press the ABRIR operator control pushbutton momentarily and notice the corresponding RELIGADOR ABERTO LED flashes on and off during the delay time indicating a pending trip Abort the pending trip by pressing the ABRIR operator control pushbutton again or by pressing the FECHAR operator control pushbutton This delay setting fo...

Page 40: ... older electronic control designation and the newer microprocessor based control designation The recloser curves can be specified in a curve setting using either designation For example a given traditional recloser curve has the following two designations Older electronic control designation A Newer microprocessor based control designation 101 Traditional recloser curve A and curve 101 are the sam...

Page 41: ... extremely inverse C4 long time inverse C5 short time inverse User Programmable Curves factory set Description DEF_01 definite time curve 0 1 seconds DEF_05 definite time curve 0 5 seconds DEF_1 definite time curve 1 0 seconds DEF_5 definite time curve 5 0 seconds The four 4 user programmable curves are factory set as shown in Table 7 with definite time characteristics User designed curves created...

Page 42: ...ngs at the end of Table 8 apply to both settings Groups 1 and 2 Those factory settings indicated with an asterisk in Table 8 are hidden with these particular factory settings As a general rule if a main setting is set to N then the subsettings that follow are hidden The following Settings Descriptions subsection explains the details behind hiding the settings Complete setting ranges are also given...

Page 43: ...ons to lockout phase 4 16 Operations to lockout ground 4 17 Operations to lockout SEF OFF 18 Reclose interval 1 cycles 300 00 19 Reclose interval 2 cycles 600 00 20 Reclose interval 3 cycles 600 00 21 Reclose interval 4 cycles 0 00 22 Reset time for auto reclose cycles 1800 00 23 Reset time from lockout cycles 600 00 24 Close power wait time cycles 300 00 25 Complex fast curve phase Y N N Const ti...

Page 44: ...ckup scheme Y N N Cold load pickup phase multiple OFF Cold load pickup ground multiple OFF Loss of load diversity time cycles 0 00 Restore min trips time limit cycles OFF Restore min trip phase Y N N Restore min trip ground Y N N Restore min trip SEF Y N N 34 Sequence coordination Y N N 35 Ground trip precedence Y N N 36 Underfrequency loadshedding Y N N Underfrequency pickup Hz OFF Underfrequency...

Page 45: ...rcuit or substation designation e g FEEDER 2101 This identifier is listed at the top of event history meter and status reports see Table 2 This setting may be up to 30 characters long This setting cannot be made via the front panel interface No Setting Default Range Incr 3 CT Ratio 200 0 1 0 6000 0 0 1 The CT Ratio current transformer ct ratio setting programs the SEL 351P to operate with a reclos...

Page 46: ...Range Incr 6 Min trip ground 50 00 OFF 1 00 639 99 Amps primary 0 01 The Min trip ground setting determines the minimum ground current threshold for overcurrent detection in primary amps The displayed Amps primary setting range for Min trip ground is calculated by multiplying the effective Amps secondary range 0 005 to 3 20 by the CT Ratio No 3 200 0 0 005 to 3 20 200 0 1 00 to 640 00 range Amps p...

Page 47: ...dden and set to zero 0 and OFF respectively Time delay SEF No 12 Operations to lockout SEF No 17 No Setting Default Range Incr 8 Fast curve phase A OFF U1 U5 C1 C5 recloser or user curve The Fast curve phase setting selects the time overcurrent curve for phase fast curve tripping Curve designations are provided in Table 6 and Table 7 This setting is hidden and set to OFF if Min trip phase No 5 is ...

Page 48: ... setting is hidden and nonoperative if Fast curve ground is programmed with a recloser or user curve Setting Default Range Incr EM reset ground fast curve N Y N The EM reset ground fast curve setting enables the electromechanical reset emulation for the US or IEC curve if set to Y This setting is usually set to N except for special applications This setting is hidden and set to N if Fast curve gro...

Page 49: ...OFF if Min trip ground No 6 is set to OFF If Delay curve ground is programmed with a US U1 U5 or IEC C1 C5 curve enter the following two settings Setting Default Range Incr Time dial ground delay curve 1 00 0 50 15 00 for US curves U1 U5 0 05 1 00 for IEC curves C1 C5 0 01 0 01 The Time dial ground delay curve setting shifts the US or IEC curve in time by the entered multiplier This setting is hid...

Page 50: ...ERRA HABILITADO operator control is on Traditional protection schemes use fast curves followed by delay curves so the delay curves do not have to be defeated If a slower first operation than second operation is desired higher logic level settings changes are required No Setting Default Range Incr 15 Operations to lockout phase 4 OFF 1 5 1 The Operations to lockout phase setting determines the tota...

Page 51: ...No 6 is set to OFF WARNING If Operations to lockout phase No 15 Operations to lockout ground No 16 and Operations to lockout SEF No 17 are all set to OFF then overcurrent protection and reclosing are disabled However if both Min trip ground No 6 and Delay curve ground No 11 are set to values other than OFF the ground delay curve element is still active provided the TERRA HABILITADO operator contro...

Page 52: ... until the following two conditions are met The trip condition has gone away The recloser has opened At the end of a reclose interval an auto reclose attempt is made The number of available Reclose interval settings corresponds to the highest set Operations to lockout No 15 16 or 17 setting For example if the highest set Operations to lockout setting is Operations to lockout phase No 15 4 then set...

Page 53: ...res No Setting Default Range Incr 24 Close power wait time 300 00 0 16000 00 cycles 0 25 cyc The Close power wait time setting is a time window that starts timing after a reclose interval times out During this time window the SEL 351P checks the trip and close capacitors connected to it If the trip and close capacitors are charged this indicates that the close power for the recloser is present and...

Page 54: ...multiplying effect on the Constant time adder phase fast curve and Min response time phase fast curve settings They all operate independently This setting is hidden and set to 1 00 if Complex fast curve phase is set to N and Fast curve phase No 8 is programmed with a recloser or user curve Setting Default Range Incr Min response phase fast curve 0 00 0 60 00 cycles 0 25 cyc The phase fast curve ca...

Page 55: ...recloser or user curve Setting Default Range Incr Min response ground fast curve 0 00 0 60 00 cycles 0 25 cyc The phase fast curve can trip no faster than the Min response time ground fast curve setting If the Min response time ground fast curve setting is set equal to zero 0 it has no effect on the ground fast curve If the Min response time ground fast curve setting is set equal to 15 cycles for ...

Page 56: ...closer or user curve Setting Default Range Incr Min response phase delay curve 0 00 0 60 00 cycles 0 25 cyc The phase delay curve can trip no faster than the Min response time phase delay curve setting If the Min response time phase delay curve setting is set equal to zero 0 it has no effect on the phase delay curve If the Min response time phase delay curve setting is set equal to 15 cycles for e...

Page 57: ...ing is set equal to 15 cycles for example the ground delay curve cannot trip on the portion of the curve that is faster than 15 cycles the ground delay curve effectively flattens out at 15 cycles This setting is hidden and set to zero 0 if Complex delay curve ground is set to N No Setting Default Range Incr 29 High current trip phase N Y N The High current trip phase setting enables the following ...

Page 58: ...s not affected by the cold load pickup scheme This setting is hidden and set to N if Fast curve ground No 9 and Delay curve ground No 11 are both set to OFF Setting Default Range Incr High current trip ground OFF OFF 1 00 79 99 multiples of Min trip ground 0 01 The High current trip ground multiples of Min trip ground setting determines the ground current threshold for ground high current tripping...

Page 59: ...ines the exceeded phase current threshold at which the SEL 351P goes to the lockout state immediately when tripping Example If High current lockout phase 13 00 multiples of Min trip phase and Min trip phase No 5 200 00 Amps primary then the phase current threshold for phase high current lockout operates at a value equal to 13 00 200 00 Amps primary 2600 00 Amps primary The upper limit of this sett...

Page 60: ... value equal to 45 00 50 00 Amps primary 2250 00 Amps primary The upper limit of this setting 80 00 multiples is calculated from the Amps secondary range upper limit 20 and settings CT Ratio No 3 200 0 and Min trip ground No 6 50 00 20 200 0 50 00 80 00 multiples upper limit Due to processor calculations and rounding techniques displayed range numbers may appear slightly different than expected e ...

Page 61: ...pickup phase 1 70 multiples of Min trip phase Min trip phase No 5 200 00 Amps primary and the cold load pickup scheme is active then the phase current threshold for overcurrent detection operates at a value equal to 1 70 200 00 Amps primary 340 00 Amps primary The upper limit of this setting 20 00 multiples is calculated from the Amps secondary range upper limit 20 and settings CT Ratio No 3 200 0...

Page 62: ...rrent detection remains unchanged threshold remains equal to setting Min trip ground No 6 and the SEF current threshold for overcurrent detection remains unchanged threshold remains equal to setting Min trip SEF No 7 This setting is hidden and set to OFF if Cold load pickup scheme is set to N or Delay curve ground No 11 is set to OFF Setting Default Range Incr Loss of load diversity time 0 00 0 99...

Page 63: ... respective regular Min trip No 4 5 and 6 levels The respective fast curves are also enabled again The natural return to the regular Min trip levels described with the preceding Loss of load diversity timer setting can also occur if the inrush current goes below the Min trip level for at least 15 seconds before Restore min trips time limit times out Restore min trips time limit OFF If the cold loa...

Page 64: ...rrent threshold for overcurrent detection can only return back to its regular Min trip SEF level naturally as described with the preceding Loss of load diversity timer setting This setting is hidden and set to N if Restore min trips time limit is set to OFF Delay curve ground No 11 is set to OFF or Min trip SEF No 7 is set to OFF No Setting Default Range Incr 34 Sequence coordination N Y N The Seq...

Page 65: ...t is controlled by Operations to lockout phase No 15 Note The Operations to lockout SEF No 17 is independent of Ground trip precedence This setting is hidden and set to N if Operations to lockout phase No 15 OFF Operations to lockout ground No 16 OFF or the Operations to lockout phase setting equals the Operations to lockout ground setting No Setting Default Range Incr 36 Underfrequency loadsheddi...

Page 66: ...Recloser Wear Monitor N The recloser wear monitor is turned off Recloser Wear Monitor AUTO This setting is usually selected if a GVR recloser is connected to the SEL 351P Enter the following setting Setting Default Range Incr Interrupt rating 6000 6000 8000 12000 Amps primary 1 These settings are derived from Whipp Bourne Switchgear Installation Operation and Maintenance Manual GVR Auto Recloser I...

Page 67: ...lt Range Incr 44 Battery capacity for sleep 20 0 100 1 The Battery capacity for sleep setting is typically set at 20 capacity so that the battery is not totally depleted during an extended outage If the Battery capacity for sleep setting e g 20 capacity is reached or the temperature compensated battery voltage measurement falls below 80 nominal voltage during an extended outage the SEL 351P goes t...

Page 68: ... radio or some device powered to receive a signal to transmit to the WAKE UP port to wake up the SEL 351P remotely see the front of Section 10 in the SEL 351P Manual Técnico for more information on the WAKE UP port Keep the 12 V power on while asleep N If the SEL 351P goes to sleep the 12 Vdc power is turned off This setting is hidden and set to N if Turn on the 12 V power is set to N No Setting D...

Page 69: ...EC Time dial phase fast curve 0 50 15 00 U1 U5 0 05 1 00 C1 C5 0 01 EM reset phase fast curve Y N Fast curve ground see Page 4 of 4 OFF U1 U5 US C1 C5 IEC Time dial ground fast curve 0 50 15 00 U1 U5 0 05 1 00 C1 C5 0 01 EM reset ground fast curve Y N Delay curve phase see Page 4 of 4 OFF U1 U5 US C1 C5 IEC Time dial phase delay curve 0 50 15 00 U1 U5 0 05 1 00 C1 C5 0 01 EM reset phase delay curv...

Page 70: ... curve 0 60 00 cycles 0 25 Vert multiplier phase delay curve 0 10 2 00 0 01 Min response phase delay curve 0 60 00 cycles 0 25 Complex delay curve ground Y N Const time adder ground delay curve 0 60 00 cycles 0 25 Vert multiplier ground delay curve 0 10 2 00 0 01 Min response ground delay curve 0 60 00 cycles 0 25 High current trip phase Y N High current trip phase range given for CT Ratio 200 0 1...

Page 71: ...round 0 01 Loss of load diversity time 0 999999 00 cycles 0 25 Restore min trips time limit OFF 0 999999 00 cycles 0 25 Restore min trip phase Y N Restore min trip ground Y N Restore min trip SEF Y N Sequence coordination Y N Ground trip precedence Y N Underfrequency loadshedding Y N Underfrequency pickup OFF 40 10 65 00 Hz 0 01 Underfrequency time delay 2 16000 00 cycles 0 25 Demand meter time co...

Page 72: ...r Programmable Curve Designations US Curve Description U1 moderately inverse U2 inverse U3 very inverse U4 extremely inverse U5 short time inverse IEC Curve Description C1 class A standard inverse C2 class B very inverse C3 class C extremely inverse C4 long time inverse C5 short time inverse User Programmable Curves factory set Description DEF_01 definite time curve 0 1 seconds DEF_05 definite tim...

Page 73: ... CC LT7 normal setting is CL PB8 LT4 CC LT7 TRCAP CLCAP The dependence on the trip and close capacitors is removed as a requirement to issue a front panel close via the CLOSE operator control or via the serial port close command See the Close Logic subsection in Section 1 Factory Set Logic in the SEL 351 P Manual Técnico for explanation about the CL logic setting 79CLS 1 normal setting is 79CLS TR...

Page 74: ...ge 13 1 5 52a CONTROL connector J5 recloser simulator partial see Note Note Terminal 1 has a load limit of 0 1 A and should be fused for protection Bussman GMD 0 125 fuse or equivalent DWG M351P054 Figure 10 Recloser Simulator Connections to SEL 351P only a 52a available Output Contacts Unless the recloser simulator is designed to accept the same trip close output that the GVR recloser accepts fro...

Page 75: ...ents with the TERRA HABILITADO operator control If testing the SEF overcurrent element enable the SEF overcurrent element with the SEF HABILITADO operator control otherwise disable the SEF overcurrent element with the SEF HABILIATDO operator control Program additional output contacts as needed to connect to a timing unit e g program an extra trip contact for overcurrent element timing see precedin...

Page 76: ...ours 6 5 20 0 percent battery capacity for sleep 0 100 turn on the 12 V power Y N keep the 12 V power on while asleep Y N See the Settings section for explanations and default settings Battery Status The status of the battery can be checked via the front panel or serial port Battery Status via Front Panel The BATERIA PROBLEMA LED illuminates for any of the following battery problems load test fail...

Page 77: ...BAT current level in mA at which the 24 V battery is charging or discharging preceded by a minus sign for discharging Battery Status via Serial Port Execute the STATUS command and have the same information available via the preceding front panel STATUS pushbutton Automatic Battery Load Test The SEL 351P automatically load tests the 24 V battery about every 24 hours An internal 24 hour timer cumula...

Page 78: ...discharge the following message is displayed Battery failed or not present The BATERIA PROBLEMA LED would already be illuminated for this condition The battery load test is not performed 3 If the battery is okay it is charging or discharging the battery load test proceeds and the following message is displayed Testing Battery OK FAIL The periods on the second line appear consecutively as each seco...

Page 79: ... is OK FAILED The periods appear on each consecutive line as each second of the 5 second battery load test times At the end of the test OK or FAILED is displayed If the battery fails the 1 Amp load test same criteria as described in the preceding Automatic Battery Load Test subsection the BATERIA PROBLEMA LED illuminates and stays illuminated until the next battery load test is successful This loa...

Page 80: ...ttable Frequency tracking range 40 1 65 Hz VA required for frequency tracking Output Contacts Except Trip and Close Per IEC 255 0 20 1974 using the simplified method of assessment 6 A continuous carry 30 A make per IEEE C37 90 1989 100 A for one second 270 Vac 360 Vdc MOV for differential surge protection Pickup dropout time 5 ms Breaking Capacity L R 40 ms 24 V 0 5 A 10 000 operations 48 V 0 5 A ...

Page 81: ... Surge Test method 6 14 1 applied to control element connections to external devices 1 0 to 1 5 MHz oscillatory test wave of crest voltage of 2 5 3 0 kV occurring in the first half cycle decaying to 50 in not less than 6 μs IEEE C37 90 1 1989 IEEE SWC Tests for Protective Relays and Relay Systems 3 kV oscillatory 5 kV fast transient type test IEEE C37 90 2 1987 IEEE Trial Use Standard Withstand Ca...

Page 82: ...dule only ESD Test IEC 255 22 2 1996 Electrical disturbance tests for measuring relays and protective equipment Section 2 Electrostatic discharge tests Severity Level 4 8 kV contact discharge all points except serial ports 15 kV air discharge to all other points type test Burn in Twenty temperature cycles from ambient to 75 C 167 F over 48 hours Relay Element Pickup Ranges and Accuracies Instantan...

Page 83: ...kup Synchronism Check Elements Slip Frequency Pickup Range 0 005 0 500 Hz 0 001 Hz steps Slip Frequency Pickup Accuracy 0 003 Hz Phase Angle Range 0 80 1 steps Phase Angle Accuracy 2 Under and Overfrequency Elements Pickup Range 40 10 65 00 Hz 0 01 Hz steps Steady State plus Transient Overshoot 0 01 Hz Time Delay 2 00 16 000 00 cycles 0 25 cycle steps Timer Accuracy 0 25 cycle and 0 1 of setting T...

Page 84: ...e to preceding stated temperature coefficient For temperature of 40 C the additional error for currents IA IB and IC is 0 0002 C 2 40 C 20 C 2 0 08 Factory Assistance The employee owners of Schweitzer Engineering Laboratories Inc are dedicated to making electric power safer more reliable and more economical We appreciate your interest in SEL products and we are committed to making sure you are sat...

Page 85: ...related to the shipment of defective units back to SEL or the provision of a substi tute unit to the customer are the responsibility of the customer This expense may include but is not limited to freight insurance Customs clearance and duties All expenses related to the shipment of repaired units back to customers or the provision of a new unit to the customer will be borne by SEL Product Upgrade ...

Page 86: ...rsons other than SEL employees or an authorized representative or distributor B Equipment and products not manufactured by SEL Such equipment and products may be covered by a warranty issued by the respective manufacturer This warranty is in lieu of any other warranties express or implied including without limitation any warranty of merchantability or fitness for a particular purpose and is in lie...

Page 87: ...ico FEBRUARY 15 1999 IMPORTANT Use this manual in conjunction with the SEL 351P Quick Start Installation and User s Guide SCHWEITZER ENGINEERING LABORATORIES INC 2350 NE HOPKINS COURT PULLMAN WA USA 99163 5603 TEL 509 332 1890 FAX 509 332 7990 ...

Page 88: ...ird party All brand or product names appearing in this document are the trademark or registered trademark of their respective holders Schweitzer Engineering Laboratories Inc SELOGIC and are registered trademarks of Schweitzer Engineering Laboratories Inc Copyright SEL 1999 All rights reserved Printed in USA This product is covered by U S Patent Numbers 5 041 737 5 208 545 5 317 472 5 349 490 5 365...

Page 89: ...G AND LOAD PROFILE FUNCTIONS SECTION 9 SETTING THE SEL 351P RECLOSER CONTROL SECTION10 SERIAL PORT COMMUNICATIONS AND COMMANDS SECTION 11 ADDITIONAL FRONT PANEL INTERFACE DETAILS SECTION 12 STANDARD EVENT REPORTS AND SER SECTION 13 TESTING AND TROUBLESHOOTING SECTION 14 APPENDICES Appendix A Firmware Versions Appendix B Firmware Upgrade Instructions Appendix C SEL Distributed Port Switch Protocol ...

Page 90: ...t in A secondary when Min trip phase is set in A primary in the EZ setting routing SET EZ command Phase pickup setting 50P4P controls single phase elements 50A4 50B4 and 50C4 listed in Table 1 2 These single phase elements indicate faulted phases for the trip operations counters see discussion on trip operation counters in the Breaker Recloser Contact Wear Monitor subsection in Section 8 Breaker R...

Page 91: ...larized neutral current directional element for neutral ground overcurrent elements Section 10 Changed the BRE and BRE W serial port commands to the BRE A and BRE W A serial port commands These new commands have the additional feature of displaying and preloading respectively trip operation counters New factory default setting BKMON WBTR WBTRT 52A listed in factory default settings SHO L listing u...

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Page 93: ...peration When Reclosing Is Defeated 1 14 Operations to Lockout Activate High Current Trip and Activate High Current Lockout Logic 1 17 High Current Trip Operation When Reclosing Is Defeated 1 17 Overcurrent Element Enable Disable Logic 1 24 Trip Logic 1 28 Close Logic 1 29 Close Conditions Other Than Auto Reclosing 1 29 Unlatch Close Conditions 1 30 Recloser Status 1 31 Drive to Lockout Logic 1 32...

Page 94: ... 1 5 Disable Lower Portion of Delay Curve Phase for Cold Load Pickup 1 12 Figure 1 6 Operations Phase Fast Curve Logic 1 15 Figure 1 7 Operations Ground Fast Curve Logic 1 16 Figure 1 8 Operations to Lockout Phase Logic 1 18 Figure 1 9 Operations to Lockout Ground Logic 1 19 Figure 1 10 Operations to Lockout SEF Logic 1 20 Figure 1 11 Activate High Current Trip Phase Logic 1 21 Figure 1 12 Activat...

Page 95: ...ontrol LED and Logic Application 1 48 Figure 1 38 RELIGAMENTO HABILITADO Operator Control LED and Logic Application 1 49 Figure 1 39 REMOTO HABILITADO Operator Control Logic Application 1 50 Figure 1 40 Example REMOTO HABILITADO Operator Control Application supervising remote control of ground overcurrent elements 1 50 Figure 1 41 SEF HABILITADO Operator Control LED and Logic Application 1 51 Figu...

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Page 97: ...might be made to the factory set logic as detailed in the text accompanying these figures Also if the SEL 351P is applied in nonstandard applications e g at a cogeneration interconnection point changes would probably be made to the factory set logic Section 9 Setting the SEL 351P Recloser Control provides details on making settings changes EZ Settings vs Regular Settings The Settings section in th...

Page 98: ...aracters RID TID CT Ratio PT Ratio CTR CTRN PTR PTRS Min trip phase Min trip ground Min trip SEF 51P1P 51P2P 50P4P 50P6P 51G1P 51G2P 50G6P 51N1P 51N2P 50N6P 50N3P 50N4P Fast curve phase Time dial phase fast curve EM reset phase fast curve 51P1C 51P1TD 51P1RS Fast curve ground Time dial ground fast curve EM reset ground fast curve 51G1C 51N1C 51G1TD 51N1TD 51G1RS 51N1RS Delay curve phase Time dial ...

Page 99: ...fast curve Min response phase fast curve 51P1CT 51P1TD 51P1MR Complex fast curve ground Y N Const time adder ground fast curve Vert multiplier ground fast curve Min response ground fast curve 51G1CT 51N1CT 51G1TD 51N1TD 51G1MR 51N1MR Complex delay curve phase Y N Const time adder phase delay curve Vert multiplier phase delay curve Min response phase delay curve 51P2CT 51P2TD 51P2MR Complex delay c...

Page 100: ...e high current lockout phase 50P1P HILKPH High current lockout ground Y N High current lockout ground Activate high current lockout ground 50G1P 50N1P HILKGR Cold load pickup scheme Y N Cold load pickup phase Cold load pickup ground Loss of load diversity time 50P5P ECOLDP 50G5P ECOLDG 50N5P SV6PU Restore min trips time limit Restore min trip phase Restore min trip ground Restore min trip SEF SV5P...

Page 101: ...ons Overview When the factory default EZ settings are active for a particular settings group many of the overcurrent elements in that settings group have specific functions as explained in Table 1 2 Table SECTION 1 2 Overcurrent Element Functions with EZ Settings Operative Overcurrent Element Function with EZ Settings Operative Associated Settings 51P1T Fast curve phase 51P1P 51P1C 51P1TD 51P1RS 5...

Page 102: ...load pickup scheme is active 50N4P 50A4 50B4 50C4 Threshold set equal to Min trip phase to detect faulted phases for trip operation counters 50P4P The overcurrent elements are available for use in SELOGIC Control Equations as Relay Word bits see Tables 9 3 and 9 4 The associated overcurrent element settings listed in Table 1 2 and SELOGIC Control Equations settings are found in the settings sheets...

Page 103: ...re made See Figure SECTION 1 15 and Figure SECTION 1 19 for more details on the operation of the Fast curve ground element COLD LOAD PICKUP SCHEME The cold load pickup scheme activates to prevent tripping on cold load pickup current Both the following occur when the cold load pickup scheme activates Fast curves are disabled Delay curves and SEF Sensitive Earth Fault element are desensitized The de...

Page 104: ...estore Min Trips bottom Logic for Cold Load Pickup Scheme Start Loss of Load Diversity Timer Loss of load diversity timer SV6PU in Figure SECTION 1 1 starts timing when both the following conditions are true Recloser is open Relay Word bit 52A logical 0 SEL 351P is in the lockout state Relay Word bit 79LO logical 1 or the reclosing relay is defeated EZ setting Reclose interval 1 0 SET EZ command o...

Page 105: ... the qualifiying time for cold load pickup phase current below normal Min trip phase SV8 cold load pickup scheme actively engaged for phase elements SV7 PU 0 Loss of load diversity Restore min trips Restore min trips scheme enabled for phase elements Cold load pickup scheme enabled for phase elements Phase current above normal Min trip phase Cold load pickup phase current below normal Min trip pha...

Page 106: ...ifying time for cold load pickup ground current below normal Min trip ground Figure SECTION 1 3 Cold Load Pickup Scheme Seal in Logic for Ground Overcurrent Elements SELOGIC Setting and Relay Word Bit SV12 cold load pickup scheme actively engaged for SEF element SV11 PU 0 Loss of load diversity Restore min trips Restore min trips scheme enabled for SEF element Cold load pickup scheme enabled for g...

Page 107: ...ical 1 when phase current exceeds its pickup setting 50P5P see Figure 3 2 Pickup setting 50P5P corresponds to EZ setting Cold load pickup phase With Relay Word bit SV8 logical 1 SELOGIC setting 51P2TC enables Delay curve phase 51P2T when phase current exceeds pickup setting 50P5P Desensitize Delay Curve Maintain Coordination Phase Elements Example In Figure SECTION 1 5 the normal Min trip phase fo...

Page 108: ...phase instantaneous element 50P6 see Figure 3 2 corresponding pickup setting 50P6P is set the same as the normal Min trip phase All this is time qualified with timer SV7PU Relay Word bit output SV7T unlatches SV8 disengaging the cold load pickup scheme for the phase elements A forced return to normal Min trip phase occurs with the logic in Figure SECTION 1 1 bottom The recloser closes and the Rest...

Page 109: ...rted to logical 1 from SH0 reset state to just before 1st reclose SH1 just before 1st reclose to just before 2nd reclose SH2 just before 2nd reclose to just before 3rd reclose SH3 just before 3rd reclose to just before 4th reclose SH4 just before 4th reclose and following through lockout state Note The above table presumes that five trip operations are set four reclosures in between them If the SE...

Page 110: ...rates similarly to the Fast curve phase just discussed Figure SECTION 1 6 Fast Curve Operation When Reclosing Is Defeated If reclosing is defeated via setting e g all Operations to lockout 1 then all the following reclosing related Relay Word bits default to logical 0 the reclosing relay is nonexistent SH0 SH1 SH2 SH3 SH4 shot counter states 79RS 79CY 79LO reclosing relay states The logic at the t...

Page 111: ...Relay Word bit Relay Word bits OPPH 2 OPPH 3 OPPH 4 OPPH 5 OPPH 1 Operations phase fast curve setting Used in the torque control SELOGIC setting 51P1TC to enable disable phase overcurrent element 51P1T see Figure 1 15 SH0 OPPH OFF 79RS 79CY 79LO Figure SECTION 1 6 Operations Phase Fast Curve Logic ...

Page 112: ...ts OPGR 2 OPGR 3 OPGR 4 OPGR 5 OPGR 1 Operations ground fast curve setting SH0 OPGR OFF 79RS 79CY 79LO Used in the torque control SELOGIC settings 51N1TC and 51G1TC to enable disable ground overcurrent elements 51N1T neutral and 51G1T residual respectively see Figure 1 15 Figure SECTION 1 7 Operations Ground Fast Curve Logic ...

Page 113: ...causes Relay Word bit HTP to be asserted to logical 1 for all the following conditions shot 2 SH2 logical 1 shot 3 SH3 logical 1 shot 4 SH4 logical 1 The note in Figure SECTION 1 11 refers to Figure SECTION 1 17 the logic that controls the High current trip phase phase definite time element 67P2T In this example High current trip phase is enabled for the third trip operation and every following tr...

Page 114: ... SH2 SH1 OLP Relay Word bit SH0 Relay Word bits OPLKPH 1 Operations to lockout phase setting OPLKPH 2 OPLKPH 3 OPLKPH 4 OPLKPH 5 Used in the following SELOGIC settings to realize drive to lockout conditions SV15 SV16 see Figure 1 24 Figure SECTION 1 8 Operations to Lockout Phase Logic ...

Page 115: ...SH2 SH1 OLG Relay Word bit SH0 Relay Word bits OPLKGR 2 OPLKGR 3 OPLKGR 4 OPLKGR 5 OPLKGR 1 Operations to lockout ground setting Used in the following SELOGIC settings to realize drive to lockout conditions SV15 SV16 see Figure 1 24 Figure SECTION 1 9 Operations to Lockout Ground Logic ...

Page 116: ... SH3 SH2 SH1 SH0 Relay Word bits OPLKSF 1 Operations to lockout SEF setting OPLKSF 2 OPLKSF 3 OPLKSF 4 OPLKSF 5 Used in the following SELOGIC setting to realize a drive to lockout condition 79DTL see Figure 1 25 OLS Relay Word bit Figure SECTION 1 10 Operations to Lockout SEF Logic ...

Page 117: ...bit HITRPH 1 Activate high current trip phase setting HITRPH 2 HITRPH 3 HITRPH 4 HITRPH 5 Used in the torque control SELOGIC setting 67P2TC to enable disable phase overcurrent element 67P2T see Figure 1 17 Relay Word bits HITRPH OFF 79RS 79CY 79LO SH0 Figure SECTION 1 11 Activate High Current Trip Phase Logic ...

Page 118: ...current trip ground setting HITRGR 2 HITRGR 3 HITRGR 4 HITRGR 5 Used in the torque control SELOGIC setting 67N2TC and 67G2TC to enable disable phase overcurrent elements 67N2T neutral and 67G2T residual respectively see Figure 1 17 Relay Word bits HITRGR OFF 79RS 79CY 79LO SH0 Figure SECTION 1 12 Activate High Current Trip Ground Logic ...

Page 119: ...elay Word bit SH0 Relay Word bits HILKPH 1 Activate high current lockout phase setting HILKPH 2 HILKPH 3 HILKPH 4 HILKPH 5 Used in the torque control SELOGIC setting 67P1TC to enable disable phase overcurrent element 67P1 see Figure 1 17 Figure SECTION 1 13 Activate High Current Lockout Phase Logic ...

Page 120: ...OVERCURRENT ELEMENT ENABLE DISABLE LOGIC The logic in Figure SECTION 1 15 through Figure SECTION 1 18 is a compilation of cold load pickup scheme outputs Relay Word Bits SV8 SV10 and SV12 and other enabling logic Relay Word bits OCP OCG HTP HTG HLP and HLG discussed in preceding subsections The torque control settings set with this logic propagate to their respective overcurrent elements to enable...

Page 121: ...nabled only if none of the Fast curve and Delay curve elements are picked up and timing If the SEF element is used it is traditionally set to be more sensitive than any other overcurrent elements Cold load pickup scheme actively engaged for phase see Figure 1 2 Cold load pickup scheme not active for phase and Fast curve phase enabled Enable fast curve phase see Figure 1 6 Cold load pickup scheme n...

Page 122: ...nd min trip Cold load pickup scheme actively engaged for ground see Figure 1 3 51G2TC Input into 51G2T logic see Figure 3 19 Relay Word Bits SV10 Cold load pickup scheme actively engaged for phase see Figure 1 2 Phase current above cold load phase min trip see Figure 3 2 Torque Control SELOGIC Settings 51P2TC Input into 51P2T logic see Figure 3 15 Delay curve phase operates on cold load phase min ...

Page 123: ...gh current trip phase see Figure 1 11 Input into 67G2T logic see Figure 3 10 Input into 67P2T logic see Figure 3 3 Enable high current lockout ground see Figure 1 14 TERRA HABILITADO operator control ON see Figure 1 37 67N1TC 67P1TC HLG LT1 67G1TC Input into 67N1 logic see Figure 3 8 HLP Enable high current lockout phase see Figure 1 13 Input into 67G1 logic see Figure 3 10 Input into 67P1 logic s...

Page 124: ...ments in Figure SECTION 1 19 are controlled by the logic in Figure SECTION 1 15 through Figure SECTION 1 18 Other trip logic details If setting Min trip ground is set below 0 1 Amp secondary 51N1T and 51N2T operate as Fast curve ground and Delay curve ground respectively 51G1T and 51G2T are turned off automatically Otherwise 51G1T and 51G2T operate as Fast curve ground and Delay curve ground respe...

Page 125: ...T 67G2T 67N3T 81D1T PB9 OC Trip Conditions SELOGIC Setting TR Relay Word Bits Input into Trip Logic see Figure 5 1 Figure SECTION 1 19 Trip Conditions CLOSE LOGIC Close Conditions Other Than Auto Reclosing Figure SECTION 1 20 shows the two additional ways to issue a close signal to a recloser other than with auto reclosing FECHAR operator control local Serial port CLOSE command remote Supervision ...

Page 126: ...ocessing interval one quarter cycle when activated Also in referenced Figure 6 1 SELOGIC Control Equation setting CL is rising edge triggered Thus if the BLOQUEIO operator control Relay Word bit LT4 or hot line tag Relay Word bit LT7 are turned ON or OFF no surprise close takes place there is no standing close condition waiting to get through FECHAR operator control pushbutton pulsed output see Fi...

Page 127: ...re 7 29 BLOQUEIO operator control ON and Serial port CLOSE Command BLOQUEIO operator control OFF see Figure 1 44 Control in the reclose cycle state No close In progess and No CLOSE command and Control not in the reclose cycle state Trip logic output see Figure 5 1 Unlatch Close Conditions SELOGIC Setting ULCL Input into close logic see Figure 6 1 This logic prevents the FECHAR operator control pus...

Page 128: ...1G2T operate as Fast curve ground and Delay curve ground respectively 51N1T and 51N2T are turned off automatically If setting High current trip ground is set effectively below 0 05 Amp secondary 67N2T operates as High current trip ground 67G2T is turned off automatically Otherwise 67G2T operates as High current trip ground 67N2T is turned off automatically If setting Min trip ground is set below 0...

Page 129: ...are true An overcurrent trip is in progress except SEF element trip The number of trip operations is greater than or equal to setting Operations to lockout ground Relay Word bit OLG asserted to logical 1 The number of trip operations is greater than or equal to setting Operations to lockout phase Relay Word bit OLP asserted to logical 1 The SEL 351P is driven to lockout if both the following are t...

Page 130: ...he following are true RELIGADOR HABILITADO operator control OFF Hot line tag ON The SEL 351P is driven to lockout if any of the following occur Underfrequency element operates ABRIR operator control pressed Serial port OPEN command executed SELOGIC Settings and Relay Word Bits SV13 any overcurrent trip except SEF 51N1T 51G2T 51N2T 67P2T 67G2T 67N2T 51G1T 51P2T 51P1T Relay Word Bits 50G6 50N6 SV14 ...

Page 131: ...an or equal to the number of set operations to lockout ground see Figure 1 9 phase current above min trip phase see Figure 3 2 any overcurrent trip except SEF see Figure 1 23 SELOGIC Settings and Relay Word Bit SV15 rising edge detect SV16 drive to lockout conditions derived from operations to lockout conditions number of operations is greater than or equal to the number of set operations to locko...

Page 132: ... Figure 1 36 serial port OPEN command drive to lockout conditions derived from operations to lockout conditions see Figure 1 24 67N3T OLS 67P1 67G1 67N1 TRIP 52A LT2 LT7 PB9 OC SV16 Relay Word Bits Underfrequency element see Figure 3 28 81D1T Figure SECTION 1 25 Drive to Lockout Logic Part 3 of 3 BLOCK RESET TIMING See Figure SECTION 1 26 If any of the fast curves delay curves or SEF elements are ...

Page 133: ...ay Word bit SEQC to logical 1 Besides the Sequence coordination EZ setting the factory set sequence coordination logic requires both the following be true SEL 351P is in the Reset state Relay Word bit 79RS logical 1 Fast curve phase or Fast curve ground is picked up Relay Word bit pickup indicator 51P1 logical 1 51G1 logical 1 or 51N1 logical 1 respectively Then the sequence coordination SELOGIC s...

Page 134: ...EL 351P 1 shot counter increments to the next shot The shot counter in turn controls Fast curve phase 51P1T via torque control setting 51P1TC Once shot counter 2 Fast curve phase is disabled Then when downstream SEL 351P 2 is operating on Delay curve phase the SEL 351P 1 Fast curves are out of the way the SEL 351P 1 does not overtrip for a fault beyond SEL 351P 2 As stated in subsection Sequence C...

Page 135: ...Manual Técnico Fast curve phase SEL 351P 2 IF F I I 51P1 t Fast curve phase 51P1T SEL 351P 1 Delay curve phase SEL 351P 2 Delay curve phase SEL 351P 1 SEL 351P 1 SEL 351P 2 DWG M351P034 1 1 Figure SECTION 1 28 Phase Coordination of SEL 351Ps in Series ...

Page 136: ... Figure SECTION 1 30 After a reclose interval times out a final check is made of the reclose supervision logic before the SEL 351P auto recloses the recloser For auto reclosing to proceed all the following conditions must be met Trip and reclose capacitors charged Healthy battery After a reclose interval times out the logic in Figure SECTION 1 30 is final checked for a time period equivalent to EZ...

Page 137: ...on 7 Inputs Outputs Timers and Other Control Logic for more information on trip and close capacitors Healthy Battery Relay Word bits NOBATT BCBOK and DTFAIL as used in Figure SECTION 1 30 logic indicate that the battery is healthy If the battery fails the load test Relay Word bit DTFAIL remains asserted to logical 1 until the next load test is successfully passed See the Battery section in the SEL...

Page 138: ... ALTERNATIVOS BLOQUEIO apertar por 3 seg LED Operator Control Pushbutton Relay Word Bit Output SELOGIC Factory Setting Detailed Operator Control Pushbutton Output Corresponding LED Operation and Logic Application PB1 LED1 LT1 PB2 LED2 LT2 PB3 LED3 0 always extin guished from factory PB4 LED4 SG1 NOT SG1 PB5 LED5 LT4 NOT LT4 Figure 1 33 Figure 1 37 Similar to Figure 1 33 Figure 1 38 Similar to Figu...

Page 139: ...ry no time delay PB8D 0 PB9D 0 Figure SECTION 1 32 Operator Controls SEF HABILITADO through ABRIR Detailed Operator Control Pushbutton Output Figure SECTION 1 31 and Figure SECTION 1 32 list corresponding figures that detail operator control pushbutton output and corresponding LED operation and logic operation Note that the pushbutton output e g Relay Word bit PB1 for the TERRA HABILITADO operator...

Page 140: ...ontrol pushbutton output described in Figure SECTION 1 33 corresponding Relay Word bits PB2 PB3 PB4 PB6 and PB7 assert to logical 1 immediately for one processing interval when the operator control pushbutton is pressed momentarily RELIGAMENTO HABILITADO PB2 SEF HABILITADO PB6 REMOTO HABILITADO PB3 PROTEÇÃO BLOQUEADA PB7 AJUSTES ALTERNATIVOS PB4 BLOQUEIO Operator Control Pushbutton Output Figure S...

Page 141: ... SECTION 1 34 BLOQUEIO Operator Control Pushbutton Output ABRIR and FECHAR Operator Control Pushbutton Outputs Figure SECTION 1 35 and Figure SECTION 1 36 describe the operation of the FECHAR and ABRIR operator control pushbutton outputs respectively Note the programmable time delays PB8D and PB9D respectively whereby the operator control can be pressed momentarily and the corresponding Relay Word...

Page 142: ...n setting LED8 If the FECHAR operator control pushbutton is pressed again or the ABRIR operator control pushbutton is pressed while PB8D is timing the RELIGADOR FECHADO LED stops flashing PB8D stops timing and Relay Word Bit PB8 is not pulsed The pending close operation is aborted The RELIGADOR FECHADO LED returns to its regular operation per SELOGIC Control Equation setting LED8 see Figure 1 32 I...

Page 143: ...d Bit PB9 is not pulsed The pending trip operation is aborted The RELIGADOR ABERTO LED returns to its regular operation per SEL OGIC Control Equation setting LED9 see Figure 1 32 It time delay setting PB9D is set PB9D 0 no time delay then Relay Word Bit PB9 functions in a manner similar to Figure 1 33 Pulses to logical 1 for one processing interval 1 4 cycle DWG MP351P026 Figure SECTION 1 36 ABRIR...

Page 144: ...ed down and then powered up again The latch output Relay Word Bit LT1 propagates to the following logic Drives the corresponding TERRA HABILITADO operator control LED SELOGIC setting LED1 LT1 to indicate that ground overcurrent tripping is enabled LED is illuminated or disabled LED is extinguished Drives the ground overcurrent element torque control equations to enable or disable ground overcurren...

Page 145: ...SELOGIC settings SET2 set reset Relay Word Bits PB2 Relay Word Bit LT2 DWG MP351P028 RELIGAMENTO HABILITADO operator control LED setting LED2 LT2 RELIGAMENTO HABILITADO operator control pushbutton pulsed output see Figure 1 33 BLOQUEIO operator control OFF see Figure 1 44 RELIGAMENTO HABILITADO operator control ON LT2 logical 1 LT4 Reset state Reclose cycle state Lockout state 79RS 79CY 79LO Reclo...

Page 146: ...rvised by Relay Word bit LT4 BLOQUEIO operator control This is just one example many variations are possible SELOGIC settings SET1 set reset Relay Word Bit LT1 RST1 DWG MP351P030 TERRA HABILITADO operator control LED setting LED1 LT1 LT1 is used in the followingSELOGIC settings to enable disable ground overcurrent elements 67N1TC 67N2TC 67N3TC 51N1TC 51N2TC torque control equations for neutral gro...

Page 147: ...ol equation to enable or disable the SEF element SELOGIC settings SET5 set reset Relay Word Bits PB6 Relay Word Bit LT5 RST5 DWG MP351P031 SEF HABILITADO operator control LED setting LED6 LT5 SEF HABILITADO operator control pushbutton pulsed output see Figure 1 33 LT5 is used in the 67N3TC SELOGIC setting to enable disable the SEF overcurrent element LT4 BLOQUEIO operator control OFF see Figure 1 ...

Page 148: ...function and so that Relay Word bit PB4 can propagate on to select setting group SELOGIC settings SS1 and SS2 AJUSTES ALTERNATIVOS operator control LED setting LED4 Relay Word bit SG1 logical 1 indicates that settings group 1 is the active setting group Relay Word bit SG1 routes the AJUSTES ALTERNATIVOS operator control pushbutton output PB4 to SELOGIC setting SS1 go to setting group 1 when SG1 lo...

Page 149: ...re SECTION 1 44 describes the logic driven by the BLOQUEIO operator control pushbutton pulsed output PB5 and operation of the corresponding LED Relay Word bit PB5 propagates to latch LT4 Latch LT4 is set up as a flip flop Press the BLOQUEIO operator control pushbutton for 3 seconds as described in Figure SECTION 1 34 and LT4 sets to logical 1 Press the BLOQUEIO operator control pushbutton again fo...

Page 150: ...terface section in the SEL 351P Quick Start Installation and User s Guide for an explanation of the factory set operation for the front panel status and trip target LEDs See Figure SECTION 1 45 through Figure SECTION 1 48 The front panel status and trip target LEDs except the CONTROLE HABILITADO status LED and the A B and C fault type trip target LEDs are programmable Two settings are made for eac...

Page 151: ...NHA VIVA LED11L N LED11 59A1 SELOGIC Setting Trip Latch LED Y N LED12L N LED12 NOBATT BCBOK DTFAIL LED13 LT7 always extinguished from factory see Figure 1 47 LED13L N DWG MP351P035 Fixed Function LED Figure SECTION 1 45 Front Panel Status LEDs Figure 2 1 through Figure 2 4 and associated text in subsection Voltage Connections in Section 2 Additional Installation Details discuss possible changes ne...

Page 152: ... SEF LED24L Y SELOGIC Setting Trip Latch LED Y N Fixed Function Trip Latched LEDs TIPO DE FALTA Figure SECTION 1 48 Front Panel Fault Type Trip Target LEDs Hot Line Tag Figure SECTION 1 49 shows the factory set hot line tag logic From the factory latch LT7 is set such that latch output LT7 is always asserted Relay Word bit LT7 logical 1 the hot line tag is reset disabled The front panel HOT LINE T...

Page 153: ...hot line tag can be set reset remotely with input IN102 wired to a SCADA contact Input IN102 is not supervised in this example A SCADA contact pulses input IN102 to set reset hot line tag remotely SELOGIC settings SET7 set reset Relay Word Bit LT7 RST7 DWG MP351P012 IN102 input IN102 pulsed by SCADA contact to enable disable a hot line tag LT7 is used in the CL close conditions other than auto rec...

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Page 155: ...allation with Only Three Phase Voltage 120 Vac Power Provided by Three Phase Voltage 2 8 Front Panel AC SUPPLY LED 2 8 TABLES Table 2 1 Output Contact Jumpers and Corresponding Output Contacts 2 1 Table 2 2 Extra Alarm Output Contact and Corresponding Controlling Jumper 2 2 Table 2 3 Required Position of Jumper JMP23 for Desired Output Contact OUT107 Operation 2 2 Table 2 4 Password and Breaker Ju...

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Page 157: ...act coil is energized These jumpers are soldered in place In Figure 3 in the Installation section of the SEL 351P Quick Start Installation and User s Guide note that the ALARM output contact is a b type output contacts and the other output contacts are all a type output contacts This is how these jumpers are configured in a standard SEL 351P Recloser Control shipment Refer to corresponding Figure ...

Page 158: ... comes in this position in a standard SEL 351P shipment see Figure 7 26 Extra Alarm output contact 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 26 If an output contact is operating as an extra alarm driven by the same signal that operates the dedicated ALARM output contact it will be in ...

Page 159: ...SE commands are used primarily to assert output contacts for circuit breaker control or testing purposes see Section 10 Serial Port Communications and Commands Note that JMP6 in Figure 6 in the Communications section of the SEL 351P Quick Start Installation and User s Guide has multiple jumpers A through D Jumpers A and B are used see Table SECTION 2 4 and Table SECTION 2 5 Jumpers C and D are not...

Page 160: ...ttery Follow the instructions in the Password Jumper subsection in the Communications section of the SEL 351P Quick Start Installation and User s Guide to remove the relay main board Remove the battery from beneath the clip and install a new one The positive side of the battery faces up Reassemble the relay as described in the same subsection Set the relay date and time via serial communications p...

Page 161: ... Vac power pins 8 and 4 POWER connector J6 VA pins 10 and 5 VOLTAGES connector J3 VB pins 9 and 4 VOLTAGES connector J3 VC pins 8 and 3 VOLTAGES connector J3 VS pins 6 and 1 VOLTAGES connector J3 DWG M351P028 R E C L O S E R SEL 351P 120 Vac Power VS VC VB VA 1 Source Load Control Cable 120 Vac Power Figure SECTION 2 1 Installation with Only 120 Vac Power traditional installation ...

Page 162: ...A 1 3 Source Load Control Cable 120 Vac Power Figure SECTION 2 2 Installation with Separate 120 Vac Power and Three Phase Voltage DWG M351P030 R E C L O S E R SEL 351P 120 Vac Power VS VC VB VA 1 3 Source Load Control Cable 120 Vac Power 1 Figure SECTION 2 3 Installation with Separate 120 Vac Power Three Phase and Synchronism Check Voltage ...

Page 163: ...ndication of incoming 120 Vac power via the factory set front panel AC SUPPLY LED SELOGIC setting LED11 59A1 Voltage element 59A1 picks up when nominal 120 Vac is applied to voltage input VA see Figure 3 21 Installation with Separate 120 Vac Power and Three Phase Voltage See Figure SECTION 2 2 Jumpers from the 120 Vac power to voltage input VS are installed Voltage input VS is then in parallel wit...

Page 164: ...D11 59B1 or 59C1 respectively for voltage input VB or VC respectively with the SET L n command n setting group number If the three phase voltage is not 120 Vac nominal phase to neutral then change factory set pickup setting 59P1P 104 for voltage elements 59A1 59B1 and 59C1 87 of 120 V to some percentage e g 87 of the nominal phase to neutral voltage secondary value of the three phase voltage with ...

Page 165: ...urrent Elements 3 8 Settings Ranges 3 11 Accuracy 3 11 Pickup and Reset Time Curves 3 11 Residual Ground Instantaneous Definite Time Overcurrent Elements 3 12 Settings Ranges 3 13 Accuracy 3 13 Pickup and Reset Time Curves 3 13 Negative Sequence Instantaneous Definite Time Overcurrent Elements 3 14 Settings Ranges 3 14 Accuracy 3 14 Pickup and Reset Time Curves 3 14 Time Overcurrent Elements 3 16 ...

Page 166: ...ism Check Elements Operation 3 39 Voltage Window 3 39 Other Uses for Voltage Window Elements 3 39 Block Synchronism Check Conditions 3 40 Slip Frequency Calculator 3 40 Angle Difference Calculator 3 41 Voltages VP and VS are Static 3 41 Voltages VP and VS are Slipping 3 41 Angle Difference Example voltages Vp and Vs are slipping 3 43 Synchronism Check Element Outputs 3 44 Voltages VP and VS are St...

Page 167: ...ough 4 Phase to Phase Instantaneous Overcurrent Elements 3 9 Figure 3 8 Levels 1 through 4 Neutral Ground Instantaneous Definite Time Overcurrent Elements with Directional Control Option 3 10 Figure 3 9 Levels 5 through 6 Neutral Ground Instantaneous Overcurrent Elements 3 11 Figure 3 10 Levels 1 through 4 Residual Ground Instantaneous Definite Time Overcurrent Elements with Directional Control Op...

Page 168: ... Voltage Window and Slip Frequency Elements 3 37 Figure 3 25 Synchronism Check Elements 3 38 Figure 3 26 Angle Difference Between VP and VS Compensated by Breaker Close Time fP fS VP shown as reference in this example 3 42 Figure 3 27 Undervoltage Block for Frequency Elements 3 46 Figure 3 28 Levels 1 through 6 Frequency Elements 3 47 ...

Page 169: ...ilable Two additional levels of phase instantaneous overcurrent elements Levels 5 and 6 are also available The different levels are enabled with the E50P enable setting as shown in Figure SECTION 3 1 Figure SECTION 3 2 and Figure SECTION 3 3 Level 2 element 67P2S in Figure SECTION 3 3 is used in directional comparison blocking schemes see Directional Comparison Blocking DCB Logic in Section 5 Trip...

Page 170: ...3 2 Overcurrent Voltage Synchronism Check and Frequency Elements Date Code 990430 SEL 351P Manual Técnico Figure SECTION 3 1 Levels 1 through 4 Phase Instantaneous Overcurrent Elements ...

Page 171: ...Level 1 example shown 50A1 1 logical 1 if IA pickup setting 50P1P 0 logical 0 if IA pickup setting 50P1P 50B1 1 logical 1 if IB pickup setting 50P1P 0 logical 0 if IB pickup setting 50P1P 50C1 1 logical 1 if IC pickup setting 50P1P 0 logical 0 if IC pickup setting 50P1P 50P1 1 logical 1 if at least one of the Relay Word bits 50A1 50B1 or 50C1 is asserted e g 50B1 1 0 logical 0 if all three Relay W...

Page 172: ...t Voltage Synchronism Check and Frequency Elements Date Code 990430 SEL 351P Manual Técnico Figure SECTION 3 3 Levels 1 through 4 Phase Instantaneous Definite Time Overcurrent Elements with Directional Control Option ...

Page 173: ... setting E32 is set E32 N then the directional control input from Figure 4 21 Level 1 is asserted to logical 1 continuously Then only the corresponding SELOGIC Control Equation torque control setting 61P1TC has to be considered in the control of the phase instantaneous definite time overcurrent elements 67P1 67P1T SELOGIC Control Equation torque control settings are discussed next Torque Control L...

Page 174: ...ntrol Equation torque control settings are set to provide directional control See Directional Control Provided by Torque Control Settings at the end of Section 4 Loss of Potential Load Encroachment and Directional Element Logic Combined Single Phase Instantaneous Overcurrent Elements The single phase instantaneous overcurrent element Relay Word bit outputs in Figure SECTION 3 1 are combined togeth...

Page 175: ...tiples of pickup setting 4 add 0 50 cycle 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 2 2 3 4 5 6 7 8 9 10 Applied Current Multiples of Pickup Setting Pickup Time Cycles Maximum Minimum Figure SECTION 3 5 SEL 351P Recloser Control Nondirectional Instantaneous Overcurrent Element Pickup Time Curve 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 2 2 3 4 5 6 7 8 9 10 Applied Current Multiples of Pickup Setting Reset Time Cy...

Page 176: ...ee Figure SECTION 3 5 and Figure SECTION 3 6 Neutral Ground Instantaneous Definite Time Overcurrent Elements Four levels of neutral ground instantaneous definite time overcurrent elements are available Two additional levels of neutral ground instantaneous overcurrent elements Levels 5 and 6 are also available The different levels are enabled with the E50N enable setting as shown in Figure SECTION ...

Page 177: ...Date Code 990430 Overcurrent Voltage Synchronism Check and Frequency Elements 3 9 SEL 351P Manual Técnico Figure SECTION 3 7 Levels 1 through 4 Phase to Phase Instantaneous Overcurrent Elements ...

Page 178: ...ltage Synchronism Check and Frequency Elements Date Code 990430 SEL 351P Manual Técnico Figure SECTION 3 8 Levels 1 through 4 Neutral Ground Instantaneous Definite Time Overcurrent Elements with Directional Control Option ...

Page 179: ...Setting range for definite time setting 67N2SD used in DCB logic 0 00 60 00 cycles in 0 25 cycle steps Note Because channel IN is rated 0 05 A nominal there is an additional 2 cycle time delay on all the neutral ground instantaneous 50N1 50N6 67N1 67N6 and definite time 67N1T 67N4T elements Any time delay provided by the definite time settings 67N1D 67N4D is in addition to this 2 cycle time delay ...

Page 180: ...us definite time overcurrent elements are available Two additional levels of residual ground instantaneous overcurrent elements Levels 5 and 6 are also available The different levels are enabled with the E50G enable setting as shown in Figure SECTION 3 10 and Figure SECTION 3 11 Figure SECTION 3 10 Levels 1 through 4 Residual Ground Instantaneous Definite Time Overcurrent Elements with Directional...

Page 181: ... 3 1 Figure SECTION 3 2 and Figure SECTION 3 3 in the preceding Phase Instantaneous Definite Time Overcurrent Elements subsection substituting residual ground current IG IG 3I0 IA IB IC for phase currents and substituting like settings and Relay Word bits Settings Ranges Setting range for pickup settings 50G1P through 50G6P 0 05 20 00 A secondary 1 A nominal phase current inputs IA IB IC Setting r...

Page 182: ...ments are available for use in any tripping or control scheme To understand the operation of Figure SECTION 3 12 and Figure SECTION 3 13 follow the explanation given for Figure SECTION 3 1 Figure SECTION 3 2 and Figure SECTION 3 3 in the preceding Phase Instantaneous Definite Time Overcurrent Elements subsection substituting negative sequence current 3I2 3I2 IA a2 IB a IC ABC rotation 3I2 IA a2 IC...

Page 183: ...current Voltage Synchronism Check and Frequency Elements 3 15 SEL 351P Manual Técnico Figure SECTION 3 12 Levels 1 through 4 Negative Sequence Instantaneous Definite Time Overcurrent Elements with Directional Control Option ...

Page 184: ...with the E51P enable setting as follows Table SECTION 3 1 Available Phase Time Overcurrent Elements Time Overcurrent Element Enabled with Setting Operating Current See Figure 51P1T 51P2T E51P 1 or 2 E51P 2 IP maximum of A B and C phase currents Figure SECTION 3 14 The following is an example of 51P1T element operation 51P2T is similar Settings Ranges Besides the settings involved with the Torque C...

Page 185: ... 10 2 00 recloser or user curves see Figure 9 1 Figure 9 20 51P1RS 51P2RS electromechanical reset timing Y N 51P1CT 51P2CT constant time adder adds additional time to curve 0 00 60 00 cycles no effect if set 0 00 51P1MR 51P2MR minimum response time flattens curve at set time curve can operate no faster than this set time 0 00 60 00 cycles no effect if set 0 00 51P1TC 51P2TC SELOGIC Control Equatio...

Page 186: ...k and Frequency Elements Date Code 990430 SEL 351P Manual Técnico Figure SECTION 3 14 Phase Time Overcurrent Element 51P1T with Directional Control Option Figure SECTION 3 15 Phase Time Overcurrent Element 51P2T with Directional Control Option ...

Page 187: ...ime overcurrent element is fully reset Element reset testing or other control applications Torque Control Switch Operation 51P1T element example Torque Control Switch Closed The pickup comparator in Figure SECTION 3 14 compares the pickup setting 51P1P to the maximum phase current IP if the Torque Control Switch is closed IP is also routed to the curve timing reset timing functions The Relay Word ...

Page 188: ...t element is fully reset Control of Logic Point TCP1 Refer to Figure SECTION 3 14 The Torque Control Switch is controlled by logic point TCP1 Logic point TCP1 is controlled by directional control optional and SELOGIC Control Equation torque control setting 51P1TC If logic point TCP1 logical 1 the Torque Control Switch is closed and maximum phase current IP is routed to the pickup comparator settin...

Page 189: ...SELOGIC Control Equation torque control settings are set directly to logical 1 e g 51QTC 1 for the factory default settings See SHO Command Show View Settings in Section 10 Serial Port Communications and Commands for a list of the factory default settings 51P1TC IN105 Input IN105 deasserted 51P1TC IN105 logical 0 Then logic point TCP1 logical 0 and thus the Torque Control Switch opens and phase ti...

Page 190: ...If maximum phase current IP goes above pickup setting 51P1P element is timing or already timed out and then current IP goes below 51P1P the element starts to time to reset emulating electromechanical reset timing Relay Word bit 51P1R resetting indication logical 1 when the element is fully reset Setting 51P1RS N If reset timing setting 51P1RS N element 51P1T reset timing is a 1 cycle dropout If cu...

Page 191: ...t Element 51N2T with Directional Control Option To understand the operation of Figure SECTION 3 16 and Figure SECTION 3 17 follow the explanation given for Figure SECTION 3 14 in the preceding Phase Time Overcurrent Elements subsection substituting current IN channel IN current for maximum phase current IP and substituting like settings and Relay Word bits ...

Page 192: ...me curve can operate no faster than this set time 0 00 60 00 cycles no effect if set 0 00 51N1TC 51N2TC SELOGIC Control Equation torque control setting Relay Word bits referenced in Table 9 3 or set directly to logical 1 1 or logical 0 0 see note below Note If SELOGIC Control Equation torque control setting 51N1TC is set directly to logical 0 i e 51N1TC 0 then corresponding neutral ground time ove...

Page 193: ...bstituting residual ground current IG IG 3I0 IA IB IC for maximum phase current IP and substituting like settings and Relay Word bits Figure SECTION 3 18 Residual Ground Time Overcurrent Element 51G1T with Directional Control Option Figure SECTION 3 19 Residual Ground Time Overcurrent Element 51G2T with Directional Control Option ...

Page 194: ...ve 0 00 60 00 cycles no effect if set 0 00 51G1MR 51G2MR minimum response time flattens curve at set time curve can operate no faster than this set time 0 00 60 00 cycles no effect if set 0 00 51G1TC 51G2TC SELOGIC Control Equation torque control setting Relay Word bits referenced in Table 9 3 or set directly to logical 1 1 or logical 0 0 see note below Note If SELOGIC Control Equation torque cont...

Page 195: ... Setting Negative Sequence Overcurrent Elements for information on setting negative sequence overcurrent elements To understand the operation of Figure SECTION 3 20 follow the explanation given for Figure SECTION 3 14 in the preceding Phase Time Overcurrent Elements subsection substituting negative sequence current 3I2 3I2 IA a2 IB a IC ABC rotation 3I2 IA a2 IC a IB ACB rotation where a 1 120 and...

Page 196: ...e 0 00 60 00 cycles no effect if set 0 00 51QMR minimum response time flattens curve at set time curve can operate no faster than this set time 0 00 60 00 cycles no effect if set 0 00 51QTC SELOGIC Control Equation torque control setting Relay Word bits referenced in Table 9 3 or set directly to logical 1 1 or logical 0 0 see note below Note If SELOGIC Control Equation torque control setting 51QTC...

Page 197: ...el voltage input VC VAB Phase to phase voltage VBC Phase to phase voltage VCA Phase to phase voltage 3V0 Zero sequence voltage V2 Negative sequence voltage V1 Positive sequence voltage VS Synchronism check voltage from SEL 351P rear panel voltage input VS Voltage VS is used in the synchronism check elements described in the following subsection Synchronism Check Elements Voltage VS is also used in...

Page 198: ...C 3P27 27A1 27B1 27C1 27A2 VA 27P2P 27B2 VB 0 0 150 0 V secondary 27C2 VC 59A1 VA 59P1P 59B1 VB 0 0 150 0 V secondary 59C1 VC 3P59 59A1 59B1 59C1 59A2 VA 59P2P 59B2 VB 0 0 150 0 V secondary 59C2 VC 27AB VAB 27PP Figure SEC TION 3 22 27BC VBC 0 0 260 0 V secondary 27CA VCA 59AB VAB 59PP 59BC VBC 0 0 260 0 V secondary 59CA VCA 59N1 3V0 59N1P 0 0 150 0 V secondary 59N2 3V0 59N2P 0 0 150 0 V secondary...

Page 199: ...Date Code 990430 Overcurrent Voltage Synchronism Check and Frequency Elements 3 31 SEL 351P Manual Técnico 59S1 VS 59S1P 0 0 150 0 V secondary 59S2 VS 59S2P 0 0 150 0 V secondary ...

Page 200: ...3 32 Overcurrent Voltage Synchronism Check and Frequency Elements Date Code 990430 SEL 351P Manual Técnico Figure SECTION 3 21 Single Phase and Three Phase Voltage Elements ...

Page 201: ...Date Code 990430 Overcurrent Voltage Synchronism Check and Frequency Elements 3 33 SEL 351P Manual Técnico Figure SECTION 3 22 Phase to Phase and Sequence Voltage Elements ...

Page 202: ...rt when the operating voltage goes above the corresponding pickup setting Undervoltage Element Operation Example Refer to Figure SECTION 3 21 top of the figure Pickup setting 27P1P is compared to the magnitudes of the individual phase voltages VA VB and VC The logic outputs in Figure SECTION 3 21 are the following Relay Word bits 27A1 1 logical 1 if VA pickup setting 27P1P 0 logical 0 if VA pickup...

Page 203: ...the weak infeed portion of the POTT logic if the weak infeed logic is enabled see Figure 5 6 If the weak infeed portion of the POTT logic is enabled setting EWFC Y and these voltage elements are used in the logic they can still be used in other applications if the settings are applicable If the weak infeed portion of the POTT logic is not enabled these voltage elements can be used in any desired a...

Page 204: ...gs Table SECTION 3 9 Synchronism Check Elements Settings and Settings Ranges Setting Definition Range 25VLO low voltage threshold for healthy voltage window 0 0 150 0 V secondary 25VHI high voltage threshold for healthy voltage window 0 0 150 0 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 maxim...

Page 205: ...Date Code 990430 Overcurrent Voltage Synchronism Check and Frequency Elements 3 37 SEL 351P Manual Técnico Figure SECTION 3 24 Synchronism Check Voltage Window and Slip Frequency Elements ...

Page 206: ...o Figure SECTION 3 25 Synchronism Check Elements Synchronism Check Elements Voltage Inputs The two synchronism check elements are single phase elements with single phase voltage inputs VP and VS used for both elements VP Phase input voltage VA VB or VC designated by setting SYNCP e g if SYNCP VB then VP VB ...

Page 207: ... and VS then voltage input VB will also have to be connected for frequency determination If desired voltage input VA can be connected in parallel with voltage input VB In such a nonstandard parallel connection remember that voltage input VA is monitoring Phase B This understanding helps prevent confusion when observing metering and event report information or voltage element operation Synchronism ...

Page 208: ...y 52b contact In addition synchronism check operation can be blocked when the relay is tripping BSYNCH TRIP Slip Frequency Calculator Refer to Figure SECTION 3 24 The synchronism check element Slip Frequency Calculator in Figure SECTION 3 24 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 ...

Page 209: ...tor in Figure SECTION 3 25 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 SECTION 3 25 If the slip frequency is less than or equal to 0 005 Hz the Angle Difference Calculator does not take into account breaker close time it presumes voltages VP and VS are static not slipping with res...

Page 210: ...ltage Synchronism Check and Frequency Elements Date Code 990430 SEL 351P Manual Técnico Figure SECTION 3 26 Angle Difference Between VP and VS Compensated by Breaker Close Time fP fS VP shown as reference in this example ...

Page 211: ...ycles x 1 second 60 cycles 0 167 second Resulting in Angle Difference VP VS fP fS x TCLOSD x 1 second 60 cycles x 360 slip cycle VP VS 0 10 x 0 167 x 360 VP VS 6 During the breaker close time TCLOSD the voltage angle difference between voltages VP and VS changes by 6 This 6 angle compensation is applied to voltage VS resulting in derived voltage VS as shown in Figure SECTION 3 26 Note The angle co...

Page 212: ...26 shows the Angle Difference increasing VS is moving away from VP VS was in phase with VP Angle Difference 0 but has now moved past VP If the Angle Difference is increasing but the Angle Difference is still less than maximum angle settings 25ANG1 or 25ANG2 then corresponding synchronism check elements 25A1 or 25A2 assert to logical 1 In this scenario of the Angle Difference increasing but still b...

Page 213: ... the corresponding Relay Word bit 25A1 or 25A2 asserts to logical 1 for that instant asserts for 1 4 cycle For example if SELOGIC Control Equation setting 79CLS Reclose Supervision is set as follows 79CLS 25A1 and the angle difference is less than angle setting 25ANG1 at that instant setting 79CLS asserts to logical 1 for 1 4 cycle allowing the sealed in open interval time out to propagate on to t...

Page 214: ...al and the Underfrequency loadshedding setting in Table 8 and subsection Settings Descriptions in the Settings section in the SEL 351P Quick Start Installation and User s Guide For various connections Figure 1 31 through Figure 1 34 and associated text in subsection Reclose Supervision Logic in Section 1 Factory Set Logic discuss possible changes necessary to the factory default undervoltage block...

Page 215: ...Date Code 990430 Overcurrent Voltage Synchronism Check and Frequency Elements 3 47 SEL 351P Manual Técnico Figure SECTION 3 28 Levels 1 through 6 Frequency Elements ...

Page 216: ... 40 10 65 00 Hz 81D3D frequency element 3 time delay 2 00 16000 00 cycles in 0 25 cycle steps 81D4P frequency element 4 pickup 40 10 65 00 Hz 81D4D frequency element 4 time delay 2 00 16000 00 cycles in 0 25 cycle steps 81D5P frequency element 5 pickup 40 10 65 00 Hz 81D5D frequency element 5 time delay 2 00 16000 00 cycles in 0 25 cycle steps 81D6P frequency element 6 pickup 40 10 65 00 Hz 81D6D ...

Page 217: ...ment 2 81D2P 59 65 Hz frequency element 2 pickup With these settings 81D2P NFREQ the underfrequency part of frequency element 2 logic is enabled 81D2 and 81D2T operate as underfrequency elements 81D2 is used in testing only Frequency Element Operation Refer to Figure SECTION 3 28 Overfrequency Element Operation With the previous overfrequency element example settings if system frequency is less th...

Page 218: ...llowing fault inception Any voltage VA VB or VC goes below voltage pickup 27B81P EZ global setting True three phase voltage connected Y Voltage VA goes below voltage pickup 27B81P EZ global setting True three phase voltage connected N This control prevents erroneous frequency element operation following fault inception Other Uses for Undervoltage Element 27B81 If voltage pickup setting 27B81P is a...

Page 219: ...10 Directional Control for Negative Sequence and Phase Overcurrent Elements 4 20 Internal Enables 4 20 Directional Elements 4 21 Directional Element Routing 4 21 Loss of Potential 4 21 Direction Forward Reverse Logic 4 22 Directional Control Settings 4 27 Settings Made Automatically 4 27 Settings 4 28 DIR1 Level 1 Overcurrent Element Direction Setting 4 28 DIR2 Level 2 Overcurrent Element Directio...

Page 220: ...olarized Residual Current Directional Element 4 12 Figure 4 7 Internal Enable 32NE for Zero Sequence Voltage Polarized Neutral Current Directional Element 4 12 Figure 4 8 Best Choice Ground Directional Logic 4 13 Figure 4 9 Negative Sequence Voltage Polarized Directional Element for Neutral Ground and Residual Ground Overcurrent Elements 4 14 Figure 4 10 Zero Sequence Voltage Polarized Residual Cu...

Page 221: ...Encroachment and Directional Element Logic iii SEL 351P Manual Técnico Figure 4 20 Direction Forward Reverse Logic for Negative Sequence Overcurrent Elements 4 25 Figure 4 21 Direction Forward Reverse Logic for Phase Overcurrent Elements 4 26 ...

Page 222: ......

Page 223: ...y I1 positive sequence current A secondary V0 zero sequence voltage V secondary I0 zero sequence current A secondary V2 negative sequence voltage V secondary The circuit breaker has to be closed Relay Word bit 3PO logical 0 for the LOP logic to operate The EZ global setting True three phase voltage connected Y N Y also has to be made in order for the LOP logic to operate corresponding regular glob...

Page 224: ...ng ELOP Y discussion In Figure 5 6 if setting ELOP Y1 and LOP asserts keying and echo keying in the permissive overreaching transfer trip POTT logic are blocked Setting ELOP Y Additionally if setting ELOP Y and a loss of potential condition occurs Relay Word bit LOP asserts to logical 1 overcurrent elements set direction forward are enabled see Figure SECTION 4 12 Figure SECTION 4 13 and Figure SE...

Page 225: ...ose to maximum bus load current levels This runs the risk of tripping on bus load current The load encroachment feature prevents this from happening as shown in the example that follows in this subsection Figure SECTION 4 2 Load Encroachment Logic Note that a positive sequence impedance calculation Z1 is made in the load encroachment logic in Figure SECTION 4 2 Load is largely a balanced condition...

Page 226: ... Maximum Positive Load Angle Forward 90 to 90 NLAF Maximum Negative Load Angle Forward 90 to 90 PLAR Maximum Positive Load Angle Reverse 90 to 270 NLAR Maximum Negative Load Angle Reverse 90 to 270 Load Encroachment Setting Example Example system conditions Nominal Line Line Voltage 230 kV Maximum Forward Load 800 MVA Maximum Reverse Load 500 MVA Power Factor Forward Load 0 90 lag to 0 95 lead Pow...

Page 227: ... 0 9 ZLF 13 2 Ω secondary 0 9 11 90 Ω secondary For the maximum reverse load 230 2 400 500 2000 21 1 Ω secondary Again to provide a margin for setting ZLR ZLR 21 1 Ω secondary 0 9 19 00 Ω secondary Convert Power Factors to Equivalent Load Angles The power factor forward load can vary from 0 90 lag to 0 95 lead Setting PLAF cos 1 0 90 26 Setting NLAF cos 1 0 95 18 The power factor reverse load can ...

Page 228: ...OP 50P6 NOT ZLOAD NOT LOP 50P6 As shown in Figure SECTION 4 2 load encroachment logic is a positive sequence calculation During LOP conditions loss of potential see Figure SECTION 4 1 positive sequence voltage V1 can be substantially depressed in magnitude or changed in angle This change in V1 can possibly cause ZLOAD to deassert logical 0 erroneously indicating that a fault condition exists Thus ...

Page 229: ...e to phase distance elements in the SEL 321 Relay Although the SEL 351P does not have phase distance elements the principles and settings example in this guide are still applicable DIRECTIONAL CONTROL FOR NEUTRAL GROUND AND RESIDUAL GROUND OVERCURRENT ELEMENTS The directional control for overcurrent elements is enabled by making directional control enable setting E32 Setting E32 and other directio...

Page 230: ... Control for Neutral Ground and Residual Ground Overcurrent Elements Figure SECTION 4 4 gives an overview of how these directional elements are enabled and routed to control the neutral ground and residual ground overcurrent elements Note in Figure SECTION 4 4 that setting ORDER enables the directional elements Setting ORDER can be set with any combination of Q and V They have the following corres...

Page 231: ...und overcurrent elements set for directional control are then controlled by this enabled directional element If V is in the setting ORDER and no other internal enable is asserted 32NE may be asserted as shown in Figure SECTION 4 7 Neutral current will then be used in determining fault direction Directional Elements Refer to Figure SECTION 4 4 Figure SECTION 4 9 Figure SECTION 4 10 and Figure SECTI...

Page 232: ...isable condition is overridden for the overcurrent elements set direction forward if setting ELOP Y Refer to Figure SECTION 4 1 and accompanying text for more information on loss of potential Direction Forward Reverse Logic Refer to Figure SECTION 4 4 Figure SECTION 4 14 and Figure SECTION 4 15 The forward Relay Word bits 32GF and 32NF and reverse Relay Word bits 32GR and 32NR logic points are rou...

Page 233: ...ctional control enable setting E32 is set to E32 N In some applications level direction settings DIR1 through DIR4 are not flexible enough in assigning the desired direction for certain overcurrent elements Subsection Directional Control Provided by Torque Control Settings at the end of this section describes how to avoid this limitation for special cases Figure SECTION 4 5 Internal Enables 32QE a...

Page 234: ...Residual Current Directional Element 50NR 50NF IN 50GRP 10 50GFP 10 V in setting ORDER E32IV 32QGE 32VE 32NE to Figure 4 11 Relay Word Bit Relay Word Bits DWG M351R152 setting enable Relay Word Bits SELOGIC Setting settings internal enable SELOGIC enable see Figure 4 6 to Figure 4 8 Figure SECTION 4 7 Internal Enable 32NE for Zero Sequence Voltage Polarized Neutral Current Directional Element ...

Page 235: ...Date Code 990430 Loss of Potential Load Encroachment and Directional Element Logic 4 13 SEL 351P Manual Técnico Figure SECTION 4 8 Best Choice Ground Directional Logic ...

Page 236: ... Load Encroachment and Directional Element Logic Date Code 990430 SEL 351P Manual Técnico Figure SECTION 4 9 Negative Sequence Voltage Polarized Directional Element for Neutral Ground and Residual Ground Overcurrent Elements ...

Page 237: ...ntial Load Encroachment and Directional Element Logic 4 15 SEL 351P Manual Técnico Figure SECTION 4 10 Zero Sequence Voltage Polarized Residual Current Directional Element for Neutral Ground and Residual Ground Overcurrent Elements ...

Page 238: ...0F Setting 0 Forward Threshold 1 25 Z0F 0 25 If Z0R Setting 0 Reverse Threshold 1 25 Z0R 0 25 If Z0R Setting 0 Reverse Threshold 0 75 Z0R 0 25 Direction Element Characteristics Reverse Threshold Forward Threshold Forward Threshold Reverse Threshold Z0 PLANE X0 R0 0 0 I V 0 I 0 V I 0 0 V V I 0 0 IN 2 Relay Word Bits Relay Word Bits Setting DWG M351R155 Relay Word Bit Relay Word Bit Reverse Forward ...

Page 239: ...chment and Directional Element Logic 4 17 SEL 351P Manual Técnico Figure SECTION 4 12 Routing of Directional Elements to Residual Ground Overcurrent Elements Figure SECTION 4 13 Routing of Directional Elements to Neutral Ground Overcurrent Elements ...

Page 240: ... 18 Loss of Potential Load Encroachment and Directional Element Logic Date Code 990430 SEL 351P Manual Técnico Figure SECTION 4 14 Direction Forward Reverse Logic for Residual Ground Overcurrent Elements ...

Page 241: ...ate Code 990430 Loss of Potential Load Encroachment and Directional Element Logic 4 19 SEL 351P Manual Técnico Figure SECTION 4 15 Direction Forward Reverse Logic for Neutral Ground Overcurrent Elements ...

Page 242: ...equence and phase overcurrent elements Figure SECTION 4 16 General Logic Flow of Directional Control for Negative Sequence and Phase Overcurrent Elements The negative sequence voltage polarized directional element has priority over the positive sequence voltage polarized directional elements in controlling the phase overcurrent elements The negative sequence voltage polarized directional element o...

Page 243: ...e positive sequence voltage polarized directional element ZLOAD asserts when the relay is operating in a user defined load region see Figure SECTION 4 2 Directional Element Routing Refer to Figure SECTION 4 16 and Figure SECTION 4 19 The directional element outputs are routed to the forward Relay Word bits 32QF and 32PF and reverse Relay Word bits 32QR and 32PR logic points and then on to the dire...

Page 244: ...forward DIR1 F Level 2 overcurrent elements set direction forward DIR2 F Level 3 overcurrent elements set direction reverse DIR3 R If a level direction setting e g DIR1 is set DIR1 N nondirectional then the corresponding Level 1 directional control outputs in Figure SECTION 4 20 and Figure SECTION 4 21 assert to logical 1 The referenced Level 1 overcurrent elements in Figure SECTION 4 20 and Figur...

Page 245: ...ss of Potential Load Encroachment and Directional Element Logic 4 23 SEL 351P Manual Técnico Figure SECTION 4 17 Negative Sequence Voltage Polarized Directional Element for Negative Sequence and Phase Overcurrent Elements ...

Page 246: ...s of Potential Load Encroachment and Directional Element Logic Date Code 990430 SEL 351P Manual Técnico Figure SECTION 4 18 Positive Sequence Voltage Polarized Directional Element for Phase Overcurrent Elements ...

Page 247: ...nd Directional Element Logic 4 25 SEL 351P Manual Técnico Figure SECTION 4 19 Routing of Directional Elements to Negative Sequence and Phase Overcurrent Elements Figure SECTION 4 20 Direction Forward Reverse Logic for Negative Sequence Overcurrent Elements ...

Page 248: ...4 26 Loss of Potential Load Encroachment and Directional Element Logic Date Code 990430 SEL 351P Manual Técnico Figure SECTION 4 21 Direction Forward Reverse Logic for Phase Overcurrent Elements ...

Page 249: ...el 4 overcurrent elements With the above settings the directional control outputs in Figure SECTION 4 14 Figure SECTION 4 15 Figure SECTION 4 20 and Figure SECTION 4 21 assert to logical 1 The referenced overcurrent elements in Figure SECTION 4 14 Figure SECTION 4 15 Figure SECTION 4 20 and Figure SECTION 4 21 are then not controlled by the directional control logic Settings Made Automatically If ...

Page 250: ...1 through DIR4 corresponding overcurrent element figure numbers in parentheses Level Direction Settings Phase Neutral Ground Residual Ground Negative Sequence DIR1 67P1 3 3 67P1T 3 3 51P1T 3 14 51P2T 3 15 67N1 3 8 67N1T 3 8 51N1T 3 16 51N2T 3 17 67G1 3 10 67G1T 3 10 51G1T 3 18 51G2T 3 19 67Q1 3 12 67Q1T 3 12 51QT 3 20 DIR2 67P2 3 3 67P2T 3 3 67P2S 3 3 67N2 3 8 67N2T 3 8 67N2S 3 8 67G2 3 10 67G2T 3...

Page 251: ...s not operable i e it does not have sufficient operating quantity as indicated by its internal enable 32QGE not being asserted then the second listed directional element V zero sequence voltage polarized residual current directional element see Figure SECTION 4 10 provides directional control for the neutral ground and residual ground overcurrent elements If the zero sequence voltage polarized res...

Page 252: ...ON 4 18 If the load encroachment logic is enabled enable setting ELOAD Y then setting 50P32P is not made or displayed but is fixed internally at 0 1 A secondary 1 A nominal phase current inputs IA IB IC Z2F Forward Directional Z2 Threshold Z2R Reverse Directional Z2 Threshold Setting Range 320 00 to 320 00 Ω secondary 1 A nominal phase current inputs IA IB IC Z2F and Z2R are used to calculate the ...

Page 253: ...ance and below the lowest expected negative sequence current magnitude for unbalanced reverse faults 50QFP and 50QRP Set Automatically If enable setting E32 AUTO settings 50QFP and 50QRP are set automatically at 50QFP 0 10 A secondary 1 A nominal phase current inputs IA IB IC 50QRP 0 05 A secondary 1 A nominal phase current inputs IA IB IC a2 Positive Sequence Current Restraint Factor I2 I1 Settin...

Page 254: ...be enabled I k I 2 0 2 This check ensures that the relay uses the most robust analog quantities in making directional decisions for the neutral ground and residual ground overcurrent elements If the internal enable 32VE internal enable for the zero sequence voltage polarized residual current directional element that controls the neutral ground and residual ground overcurrent elements is deasserted...

Page 255: ...lanced reverse faults The 50GFP 10 setting IN current value is the pickup for the forward fault detector 50NF of the zero sequence voltage polarized neutral current directional element see Figure SECTION 4 7 This setting is always automatic and used for SEF applications The 50GRP 10 setting IN current value is the pickup for the reverse fault detector 50NR of the zero sequence voltage polarized ne...

Page 256: ...oltage polarized directional elements see Figure SECTION 4 10 and Figure SECTION 4 11 Z0F and Z0R Set Automatically If enable setting E32 AUTO settings Z0F and Z0R zero sequence impedance values are calculated automatically using the zero sequence line impedance magnitude setting Z0MAG as follows Z2F Z0MAG 2 Ω secondary Z2R Z0MAG 2 0 5 Ω secondary If enable setting E32 Y settings Z0F and Z0R zero ...

Page 257: ...on forward DIR1 F Level 2 overcurrent elements set direction forward DIR2 F Level 3 overcurrent elements set direction reverse DIR3 R Suppose that the Level 1 overcurrent elements should be set as follows 67P1 direction forward 67G1 direction forward 51P1T direction forward 51P2T direction reverse 51N1T nondirectional 51G1T direction forward To accomplish this the DIR1 setting is turned off and th...

Page 258: ......

Page 259: ...RSOTF and TR 5 11 Trip Setting DTT 5 11 Use Existing SEL 321 Relay Application Guides for the SEL 351P Recloser Control 5 11 Optoisolated Input Settings Differences Between the SEL 321 and SEL 351P Recloser Control 5 12 Trip Settings Differences Between the SEL 321 and SEL 351P Recloser Control 5 12 Permissive Overreaching Transfer Trip POTT Logic 5 12 Use Existing SEL 321 Relay POTT Application G...

Page 260: ...7N2SD 67G2SD 67Q2SD Level 2 Short Delay 5 25 Logic Outputs 5 26 DSTRT Directional Carrier Start 5 26 NSTRT Nondirectional Carrier Start 5 26 STOP Stop Carrier 5 26 BTX Block Trip Extension 5 27 Installation Variations 5 27 Additional Front Panel Status and Target LED Information 5 29 A B and C Target LEDs 5 29 Target Reset Lamp Test Front Panel Pushbutton 5 29 Other Applications for the Target Res...

Page 261: ...e 5 13 SEL 351P Recloser Control Connections to Communications Equipment for a Three Terminal Line DCUB Scheme setting ECOMM DCUB2 5 24 Figure 5 14 DCB Logic 5 27 Figure 5 15 SEL 351P Recloser Control Connections to Communications Equipment for a Two Terminal Line DCB Scheme 5 28 Figure 5 16 SEL 351P Recloser Control Connections to Communications Equipment for a Three Terminal Line DCB Scheme 5 29...

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Page 263: ...luminate an LED to indicate a communications assisted trip via SELOGIC Control Equation settings TRCOMM or DTT reprogram an LED with Relay Word bit COMMT The LED also has to be set as a trip latch LED see Front Panel Status and Trip Target LEDs subsection in Section 1 Factory Set Logic TRSOTF Switch Onto Fault Trip Conditions Setting TRSOTF is supervised by the switch onto fault condition SOTFE Se...

Page 264: ...t elements TR is set with direction forward underreaching Level 1 overcurrent elements and other time delayed elements e g Level 2 definite time overcurrent elements and TRSOTF is set with nondirectional overcurrent elements Figure SECTION 5 1 Trip Logic The TRIP Relay Word bit output of the trip logic in Figure SECTION 5 1 propagates to the final trip close logic in Figure 7 29 The logic in Figur...

Page 265: ...ration Timer with setting TDURD outputs a logical 1 for a time duration of TDURD cycles any time it sees a rising edge on its input logical 0 to logical 1 transition if it is not already timing timer is reset The TDURD timer assures that the TRIP Relay Word bit remains asserted at logical 1 for a minimum of TDURD cycles If the output of OR 1 gate is logical 1 beyond the TDURD time Relay Word bit T...

Page 266: ...lay Word bit TRGTR See Figure 5 17 and accompanying text for applications for Relay Word bit TRGTR Factory Settings Example using setting TR If the communications assisted and switch onto fault trip logic at the top of Figure SECTION 5 1 can effectively be ignored the figure becomes a lot smaller Then SELOGIC Control Equation trip setting TR is the only input into OR 1 gate and follows into the se...

Page 267: ...GIC Switch Onto Fault SOTF trip logic provides a programmable time window for selected elements to trip right after the circuit breaker closes Switch onto fault implies that a circuit breaker is closed into an existing fault condition For example suppose safety grounds are accidentally left attached to a line after a clearance If the circuit breaker is closed into such a condition the resulting fa...

Page 268: ...L 351P Recloser Control The open circuit breaker condition is determined from the combination of Circuit breaker status 52A Load current condition 50L If the circuit breaker is open 52A logical 0 and current is below phase pickup 50LP 50L logical 0 then the three pole open 3PO condition is true 3PO logical 1 circuit breaker open The 3POD dropout time qualifies circuit breaker closure whether detec...

Page 269: ...OTFE is asserted when the circuit breaker is open This allows elements set in the SELOGIC Control Equation trip setting TRSOTF to operate if a fault occurs when the circuit breaker is open see Figure SECTION 5 1 In such a scenario e g flashover inside the circuit breaker tank the tripping via setting TRSOTF cannot help in tripping the circuit breaker the circuit breaker is already open but can ini...

Page 270: ...or the overcurrent elements in SELOGIC Control Equation trip setting TRSOTF to trip after the circuit breaker closes see Figure SECTION 5 1 middle of figure Time setting SOTFD is usually set around 30 cycles A SOTF trip illuminates the SOTF front panel LED Switch Onto Fault Trip Logic Trip Setting TRSOTF An instantaneous overcurrent element is usually set to trip in the SELOGIC Control Equation tr...

Page 271: ... and the top half of Figure SECTION 5 1 The six available tripping schemes are Direct Transfer Trip DTT Direct Underreaching Transfer Trip DUTT Permissive Overreaching Transfer Trip POTT Permissive Underreaching Transfer 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 setti...

Page 272: ...lement applications for traditional recloser control schemes addressed with EZ settings differ from those in a communica tions assisted tripping scheme see following trip settings See Table 1 1 and 1 2 and the EZ settings explanation preceding Table 1 1 in Section 1 Factory Set Logic for more information on EZ settings and overcurrent element applications for traditional recloser control schemes T...

Page 273: ...ime delayed elements e g Level 2 definite time overcurrent elements Trip Setting DTT The DTT and DUTT tripping schemes are realized with SELOGIC Control Equation trip setting DTT discussed at the beginning of this section To illuminate an LED to indicate a communications assisted trip via SELOGIC Control Equation settings TRCOMM or DTT reprogram an LED with Relay Word bit COMMT see Figure 5 1 The ...

Page 274: ... on optoisolated inputs Trip Settings Differences Between the SEL 321 and SEL 351P Recloser Control Some of the SELOGIC Control Equation trip settings of the SEL 321 and SEL 351P have different labels yet are operationally the same The correspondence is SEL 321 Relay SEL 351P MTCS TRCOMM Communications Assisted Trip Conditions MTO TRSOTF Switch Onto Fault Trip Conditions MTU TR Unconditional or Ot...

Page 275: ...OTT applications a permissive trip signal is received from one remote terminal One optoisolated input on the SEL 351P e g input IN104 is driven by a communications equipment receiver output see Figure SECTION 5 8 Make SELOGIC Control Equation setting PT1 PT1 IN104 two terminal line application In three terminal line POTT applications permissive trip signals are received from two remote terminals T...

Page 276: ...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 3 5 cycles Logic Outputs The following logic outputs can be tested by assigning them to output contacts See Output Contacts in Section 7 Inputs Outputs Timers and Other Control Logic for more inf...

Page 277: ...ommunications equipment transmitter input in a two terminal line application see Figure SECTION 5 8 In a three terminal line scheme output contact OUT107 is set the same as OUT105 see Figure SECTION 5 9 OUT107 KEY EKEY Echo Key Permissive Trip Permissive trip signal keyed by Echo logic used in testing ...

Page 278: ...5 16 Trip and Target Logic Date Code 990215 SEL 351P Manual Técnico Figure SECTION 5 6 POTT Logic ...

Page 279: ...utral ground instantaneous overcurrent element 67G1 Level 1 directional residual ground instantaneous overcurrent element 67Q1 Level 1 directional negative sequence instantaneous overcurrent element instead of with element KEY see Figure SECTION 5 8 OUT105 67P1 67N1 67G1 67Q1 Note only use enabled elements If echo keying is desired add the echo key permissive trip logic output as follows OUT105 67...

Page 280: ... Terminal Line POTT Scheme Figure SECTION 5 9 SEL 351P Recloser Control Connections to Communications Equipment for a Three Terminal Line POTT Scheme DIRECTIONAL COMPARISON UNBLOCKING DCUB LOGIC Enable the DCUB logic by setting ECOMM DCUB1 or ECOMM DCUB2 The DCUB logic in Figure SECTION 5 10 is an extension of the POTT logic in Figure SECTION 5 6 Thus the relay requires all the POTT settings and l...

Page 281: ...ive trip signal is received from one remote terminal One optoisolated input on the SEL 351P e g input IN104 is driven by a communications equipment receiver output see Figure SECTION 5 12 Make SELOGIC Control Equation setting PT1 PT1 IN104 two terminal line application In three terminal line DCUB applications setting ECOMM DCUB2 permissive trip signals are received from two remote terminals Two op...

Page 282: ...g 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 typically set at 9 cycles 150 ms Channel...

Page 283: ...nnel condition for the respective Channel 1 or 2 continues for longer than time UBDURD The UBB1 and UBB2 are routed in various combinations in Figure SECTION 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 SECTION 5 1 When UBB asserts to logical 1 tripping is blocked ...

Page 284: ...5 22 Trip and Target Logic Date Code 990215 SEL 351P Manual Técnico Figure SECTION 5 10 DCUB Logic ...

Page 285: ...re then routed in various combinations in Figure SECTION 5 7 to control Relay Word bit PTRX depending on enable setting ECOMM DCUB1 or DCUB2 Relay Word bit PTRX is the permissive trip receive input into the trip logic in Figure SECTION 5 1 Installation Variations Figure SECTION 5 13 shows output contacts OUT105 and OUT107 connected to separate communications equipment for the two remote terminals ...

Page 286: ...to arrive from the remote terminal Instantaneously keys the communications equipment to transmit block trip for reverse faults and extends this signal for a settable time following the dropout of all Level 3 directional overcurrent elements 67P3 67N3 67G3 and 67Q3 Latches the block trip send condition by the directional overcurrent following a close in zero voltage three phase fault where the pola...

Page 287: ...ver outputs see Figure SECTION 5 16 Make SELOGIC Control Equation setting BT as follows BT IN104 IN106 three terminal line application SELOGIC Control Equation setting BT is routed through a dropout timer BTXD in the DCB logic in Figure SECTION 5 14 The timer output Relay Word bit BTX is routed to the trip logic in Figure SECTION 5 1 Timer Settings See Section 9 Setting the SEL 351P Recloser Contr...

Page 288: ...TART includes current reversal guard logic NSTRT Nondirectional Carrier Start Program an output contact to include nondirectional carrier start in addition to directional start For example SELOGIC Control Equation setting OUT105 is set OUT105 DSTRT NSTRT Output contact OUT105 drives a communications equipment transmitter input in a two terminal line application see Figure SECTION 5 15 In a three t...

Page 289: ...on Variations Figure SECTION 5 16 shows 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 OUT105 DSTRT NSTRT and OUT107 DSTRT NSTRT OUT106 STOP and OUT104 STOP Depending on the installation perhaps one output contact e g OUT105 DSTRT NSTRT can be connected in parallel to both...

Page 290: ...n 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 communication equipment RX receive output contacts in Figure SECTION 5 16 Then setting BT would be programmed as BT IN104 and input IN106 can be used for another function In Figure SECTION 5 15 and Figure SECTION 5 16 the carrier scheme cutout switch ...

Page 291: ...e targeting is more secure if both the following are true True three phase voltage is connected to the SEL 351P Setting 3PVOLT Y is made SET G command Target Reset Lamp Test Front Panel Pushbutton When the Target Reset Lamp Test front panel pushbutton is pressed All front panel LEDs illuminate for one 1 second All latched target LEDs are extinguished unlatched Other Applications for the Target Res...

Page 292: ... See Figure 5 17 SV8 SV8 SV7T TRGTR DP3 SV8 DP3_1 BREAKER FAILURE DP3_0 blank Figure SECTION 5 17 Seal in of Breaker Failure Occurrence for Message Display If a breaker failure trip has occurred the momentary assertion of SV7T breaker failure trip will cause SV8 in Figure SECTION 5 17 to seal in Asserted SV8 in turn asserts DP3 causing the message BREAKER FAILURE to display in the rotating default...

Page 293: ...eclosing Relay 6 11 Reclosing Relay States and General Operation 6 12 Lockout State 6 13 Reclosing Relay States and Settings Setting Group Changes 6 13 Defeat the Reclosing Relay 6 14 Close Logic Can Still Operate When the Reclosing Relay is Defeated 6 14 Reclosing Relay Timer Settings 6 15 Open Interval Timers 6 15 Determination of Number of Reclosures Last Shot 6 16 Observe Shot Counter Operatio...

Page 294: ...ence to Relay Word Bits and Open Interval Times 6 18 Table 6 4 Reclosing Relay SELOGIC Control Equation Settings 6 18 Table 6 5 Open Interval Time Example Settings 6 23 FIGURES Figure 6 1 Close Logic 6 2 Figure 6 2 Reclose Supervision Logic following open interval time out 6 5 Figure 6 3 Reclose Supervision Limit Timer Operation refer to bottom of Figure 6 2 6 6 Figure 6 4 SEL 351P Recloser Contro...

Page 295: ...close Logic This subsection describes all the reclosing relay settings and logic needed for automatic reclosing besides the final close logic and reclose supervision logic described in the previous subsections The reclose enable setting E79 has setting choices N 1 2 3 and 4 Setting E79 N defeats the reclosing relay Setting choices 1 through 4 are the number of desired automatic reclosures Note Set...

Page 296: ...t 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 SECTION 6 2 Or SELOGIC Control Equation setting CL goes from logical 0 to logical 1 rising edge transition The CLOSE Relay Word bit output of the close logic in Figure SECTION 6 1 propagates to t...

Page 297: ...ure Timer times out Relay Word bit CF asserts to logical 1 forcing the CLOSE Relay Word bit to logical 0 and the reclosing relay to lockout if it was an auto reclosure Note There is no need to set CFD to other than 15 cycles The final trip close logic in Figure 7 29 takes care of all timing issues concerning the dedicated close output contact The CLOSE Relay Word bit output of the close logic in F...

Page 298: ...ure SECTION 6 1 controls dedicated trip and close output contacts See Output Contacts in Section 7 Inputs Outputs Timers and Other Control Logic for more information on programming additional output contacts RECLOSE SUPERVISION LOGIC Note that one of the inputs into the close logic in Figure SECTION 6 1 is Reclosing Relay Open Interval Time Out qualified by 79CLS This input into the close logic in...

Page 299: ...Date Code 990215 Close and Reclose Logic 6 5 SEL 351P Manual Técnico Figure SECTION 6 2 Reclose Supervision Logic following open interval time out ...

Page 300: ...6 6 Close and Reclose Logic Date Code 990215 SEL 351P Manual Técnico Figure SECTION 6 3 Reclose Supervision Limit Timer Operation refer to bottom of Figure SECTION 6 2 ...

Page 301: ...ose logic in Figure SECTION 6 1 to automatically reclose the circuit breaker If 79CLS is deasserted to logical 0 at the instant of an open interval time out the following occurs No automatic reclosing takes place Relay Word bit RCSF Reclose Supervision Failure indication asserts to logical 1 for one processing interval The reclosing relay is driven to the Lockout State See the previous Factory Set...

Page 302: ...ay open interval time out seals Then when 79CLS asserts to logical 1 the sealed in reclosing relay open interval time out condition will propagate through Figure SECTION 6 2 and on to the close logic in Figure SECTION 6 1 Unlatch Reclose Supervision Logic bottom of Figure SECTION 6 2 Refer to the bottom of Figure SECTION 6 2 If the reclosing relay open interval time out condition is sealed in it s...

Page 303: ...aker 52 1 to be reclosed after an open interval time out the SEL 351P 1 checks that Bus 1 voltage is hot and the transmission line voltage is dead This requires reclose supervision settings 79CLSD 0 00 cycles only one check 79CLS 3P59 27S where 3P59 all three Bus 1 phase voltages VA VB and VC are hot 27S monitored single phase transmission line voltage channel VS is dead SEL 351P 2 Recloser Contro...

Page 304: ...uit breaker 52 1 is tripped again If channel VS of the SEL 351P 2 Relay is connected to one of these briefly energized phases synchronism check element 25A1 could momentarily assert to logical 1 So that this possible momentary assertion of synchronism check element 25A1 does not cause any inadvertent reclose of circuit breaker 52 2 make sure the open interval timers in the SEL 351P 2 are set with ...

Page 305: ...OGIC Control Equation setting 79CLS and then propagated on to the close logic in Figure SECTION 6 1 to automatically reclose a circuit breaker The explanation that follows in this reclosing relay subsection describes all the reclosing relay settings and logic that eventually result in this open interval time out logic input into Figure SECTION 6 2 Other aspects of the reclosing relay are also expl...

Page 306: ...ON 6 1 Relay Word Bit and Front Panel Correspondence to Reclosing Relay States Reclosing Relay State Corresponding Relay Word Bit Corresponding Front Panel LED Reset 79RS RS Reclose Cycle 79CY CY Lockout 79LO LO The reclosing relay is in one and only one of these states listed in Table SECTION 6 1 at any time When in a given state the corresponding Relay Word bit asserts to logical 1 and the LED i...

Page 307: ...upervision Limit Timer setting 79CLSD times out see Figure SECTION 6 2 and top of Figure SECTION 6 3 Reclosing Relay States and Settings Setting Group Changes If individual settings are changed for the active setting group or the active setting group is changed all of the following occur The reclosing relay remains in the state it was in before the settings change The shot counter is driven to las...

Page 308: ...s RS CY and LO are all extinguished a ready indication that the recloser is defeated Close Logic Can Still Operate When the Reclosing Relay is Defeated If the reclosing relay is defeated the close logic see Figure SECTION 6 1 can still operate if SELOGIC Control Equation circuit breaker status setting 52A is set to something other than numeral 0 Making the setting 52A 0 defeats the close logic and...

Page 309: ...setting E79 3 the first three open interval time settings in Table SECTION 6 2 are made available for setting If an open interval time is set to zero then that open interval time is not operable and neither are the open interval times that follow it In the factory settings in Table SECTION 6 2 the open interval 4 time setting 79OI4 is the first open interval time setting set equal to zero 79OI4 0 ...

Page 310: ... of Number of Reclosures Last Shot The number of reclosures is equal to the number of open interval time settings that precede the first open interval time setting set equal to zero The last shot value is also equal to the number of reclosures In the above factory settings three set open interval times precede open interval 4 time which is set to zero 79OI4 0 00 79OI1 300 00 79OI2 600 00 79OI3 600...

Page 311: ...vidual settings changed for the active setting group or the active setting group is changed see Reclosing Relay States and Settings Setting Group Changes earlier in this subsection Typically setting 79RSLD is set less than setting 79RSD Setting 79RSLD emulates reclosing relays with motor driven timers that have a relatively short reset time from the lockout position to the reset position The 79RSD...

Page 312: ...tion of Number of Reclosures Last Shot earlier in this subsection The shot counter resets back to shot 0 when the reclosing relay returns to the Reset State Table SECTION 6 3 Shot Counter Correspondence to Relay Word Bits and Open Interval Times Shot Corresponding Relay Word Bit Corresponding Open Interval 0 SH0 79OI1 1 SH1 79OI2 2 SH2 79OI3 3 SH3 79OI4 4 SH4 When the shot counter is at a particul...

Page 313: ...n setting 79RI senses a rising edge logical 0 to logical 1 transition the relay goes to the Lockout State Factory Settings Example With factory 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 or 79CY Relay Word bit is at logical 1 52A logical 1 or 79CY logical 1 The recloser has to be closed recl...

Page 314: ...1 TRIP logical 1 Thus the TRIP Relay Word bit has to be asserted when the circuit breaker opens in order to initiate open interval timing With a long enough setting of the Minimum Trip Duration Timer TDURD the TRIP Relay Word bit will still be asserted to logical 1 when the circuit breaker opens see Figure 5 1 and Figure 5 2 in Section 5 Trip and Target Logic If the TRIP Relay Word bit is at logic...

Page 315: ...L 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 Lockout LED illuminates 79DTL has a 60 cycle dropout time This keeps the drive to lockout condition up 60 more cycles after 79DTL has reverted back to 79DTL logical 0 This is useful for situations where both the following are true any of the trip and drive t...

Page 316: ...ot and then loads the open interval time corresponding to the new shot see Table SECTION 6 3 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 earlier in this subsection After successful reclose initiation open interval timing does not start until allowed by the stall open interval timing se...

Page 317: ...e setting 79OI1 is skipped and the relay times on the open interval 2 time setting 79OI2 instead Table SECTION 6 5 Open Interval Time Example Settings Shot Corresponding Relay Word Bit Corresponding Open Interval Open Interval Time Example Setting 0 SH0 79OI1 30 cycles 1 SH1 79OI2 600 cycles In Table SECTION 6 5 note that the open interval 1 time setting 79OI1 is a short time while the following o...

Page 318: ...Settings Example 3 Refer to Figure SECTION 6 4 and accompanying setting example 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 Depe...

Page 319: ...e Lockout State to the Reset State with no additional delay because 79BRS is deasserted to logical 0 When the relay is in the Reclose Cycle State Relay Word bit 79CY is asserted to logical 1 Thus the factory 79BRS setting can function to block reset timing if time overcurrent pickup 51P or 51G is picked up while the relay is in the Reclose Cycle State This helps prevent repetitive trip reclose cyc...

Page 320: ...mited by SELOGIC setting 79SEQ but no further than shot 4 The reset timer timing is subject to SELOGIC setting 79BRS see Block Reset Timing 79BRS earlier in this subsection See Figure 1 27 in Section 1 Factory Set Logic for the 79SEQ factory settings and accompanying example Fast curve phase SEL 351P 2 IF F I I 51P1 t Fast curve phase 51P1T SEL 351P 1 Delay curve phase SEL 351P 2 Delay curve phase...

Page 321: ...g Group Changed 7 11 Latch Control Switches 7 11 Latch Control Switch Application Ideas 7 12 Reclosing Relay Enable Disable Setting Example 7 13 Feedback Control 7 14 Rising Edge Operators 7 14 Use a Remote Bit Instead to Enable Disable the Reclosing Relay 7 15 Latch Control Switch States Retained 7 16 Power Loss 7 16 Settings Change or Active Setting Group Change 7 16 Reset Latch Bits for Active ...

Page 322: ... 35 Circuit Breaker Status Indication 7 35 Traditional Indicating Panel Lights Replaced with Rotating Default Display 7 35 General Operation of Rotating Default Display Settings 7 36 Settings Examples 7 36 Reclosing Relay Status Indication 7 36 Reclosing Relay Enabled 7 37 Reclosing Relay Disabled 7 37 Circuit Breaker Status Indication 7 37 Circuit Breaker Closed 7 37 Circuit Breaker Open 7 38 Add...

Page 323: ...8 7 12 Figure 7 12 SCADA Contact Pulses Input IN4 to Enable Disable Reclosing Relay 7 13 Figure 7 13 Latch Control Switch Controlled by a Single Input to Enable Disable Reclosing 7 13 Figure 7 14 Latch Control Switch Operation Time Line 7 15 Figure 7 15 Time Line for Reset of Latch Bit LT2 After Active Setting Group Change 7 17 Figure 7 16 Latch Control Switch with Time Delay Feedback Controlled b...

Page 324: ......

Page 325: ...schemes Relay Word bits and SELOGIC Control Equation setting examples are used throughout this section See Section 9 Setting the SEL 351P Recloser Control for more information on Relay Word bits and SELOGIC Control Equation settings See Section 10 Serial Port Communications and Commands for more information on viewing and making SELOGIC Control Equation settings commands SHO L and SET L OPTOISOLAT...

Page 326: ...pplications the input pickup dropout debounce timers should be set in 1 4 cycle increments For example in the factory default settings all the optoisolated input pickup dropout debounce timers are set at 1 2 cycle e g IN104D 0 50 See SHO Command Show View Settings in Section 10 Serial Port Communications and Commands for a list of the factory default settings Only a few applications e g communicat...

Page 327: ...through IN106 are used in SELOGIC Control Equations Settings Examples Figure SECTION 7 2 Circuit Breaker Auxiliary Contact and Reclose Enable Switch Connected to Optoisolated Inputs IN101 and IN102 The example functions for inputs IN101 and IN102 are described in the following discussions Input IN101 In this example Relay Word bit IN101 is used in the SELOGIC Control Equation circuit breaker statu...

Page 328: ...s setting 52A does not prevent using Relay Word bit IN101 in other SELOGIC Control Equation settings Input IN102 In this example Relay Word bit IN102 is used in the SELOGIC Control Equation drive to lockout setting 79DTL IN102 NOT IN102 Connect input IN102 to a reclose enable switch When the reclose enable switch is open input IN102 is deenergized and the reclosing relay is driven to lockout 79DTL...

Page 329: ...on 11 Additional Front Panel Interface Details This extra local control is not the control available via the operator control pushbuttons on the bottom half of the SEL 351P front panel Figure SECTION 7 3 Local Control Switches Drive Local Bits LB1 Through LB8 The output of the local control switch in Figure SECTION 7 3 is a Relay Word bit LBn n 1 through 8 called a local bit The local control swit...

Page 330: ...he 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 SEL 351P Recloser Control and Section 10 Serial Port Communications and Commands Local Control Switch Types Configure any local control switch as one of the following three switch types ON OFF Switch Local bit LBn i...

Page 331: ...gical 1 or OFF LBn logical 0 position or is in the OFF LBn logical 0 position and pulses to the MOMENTARY LBn logical 1 position for one processing interval 1 4 cycle Figure SECTION 7 6 Local Control Switch Configured as an ON OFF MOMENTARY Switch Table SECTION 7 2 Correspondence Between Local Control Switch Types and Required Label Settings Local Switch Type Label NLBn Label CLBn Label SLBn Label...

Page 332: ...e switches as OFF MOMENTARY switches Local Bit Label Settings Function LB3 NLB3 MANUAL TRIP trips breaker and drives reclosing relay to lockout CLB3 RETURN OFF position return from MOMENTARY position SLB3 ON position not used left blank PLB3 TRIP MOMENTARY position LB4 NLB4 MANUAL CLOSE closes breaker separate from automatic reclosing CLB4 RETURN OFF position return from MOMENTARY position SLB4 ON...

Page 333: ...hes can be used for such applications as Reclosing relay enable disable Ground relay enable disable Remote control supervision Sequence coordination enable disable Local control switches can also be configured as ON OFF MOMENTARY switches for applications that require such Local control switches can be applied to almost any control scheme that traditionally requires front panel switches Local Cont...

Page 334: ...e changed for a setting group other than the active setting group there is no interruption of the local bits the relay is not momentarily disabled If a local control switch is made inoperable because of a settings change i e the corresponding label settings are nulled the corresponding local bit is then fixed at logical 0 regardless of the local bit state before the settings change If a local cont...

Page 335: ...8 is retained if relay settings are changed for the active setting group or one of the other setting groups or the active setting group is changed If a remote control switch is in the ON position corresponding remote bit is asserted to logical 1 before a setting change or an active setting group change it comes back in the ON position corresponding remote bit is still asserted to logical 1 after t...

Page 336: ...witch logic in Figure SECTION 7 11 repeats for each latch bit LT1 through LT8 Use these latch bits in SELOGIC Control Equations These latch control switches each have the following SELOGIC Control Equation settings SETn set latch bit LTn to logical 1 RSTn reset latch bit LTn to logical 0 If setting SETn asserts to logical 1 latch bit LTn asserts to logical 1 If setting RSTn asserts to logical 1 la...

Page 337: ... pulsed to enable disable the reclosing relay Figure SECTION 7 12 SCADA Contact Pulses Input IN4 to Enable Disable Reclosing Relay If the reclosing relay is enabled and the SCADA contact is pulsed the reclosing relay is then disabled If the SCADA contact is pulsed again the reclosing relay is enabled again The control operates in a cyclic manner pulse to enable pulse to disable pulse to enable pul...

Page 338: ...ng edge operator in front of Relay Word bit IN104 IN104 sees a logical 0 to logical 1 transition as a rising edge and IN104 asserts to logical 1 for one processing interval The rising edge operator on input IN104 is necessary because any single assertion of optoisolated input IN104 by the SCADA contact will last for at least a few cycles and each individual assertion of input IN104 should only cha...

Page 339: ...assertion of input IN104 Pulse 1 Pulse 2 Pulse 3 and Pulse 4 in Figure SECTION 7 14 changes the state of latch control switch just once Note Refer to preceding subsection Optoisolated Inputs and Figure SECTION 7 1 Relay Word bit IN104 shows the state of optoisolated input IN104 after the input pickup dropout debounce timer IN104D Thus when using Relay Word bit IN104 in Figure SECTION 7 11 and Figu...

Page 340: ...relays In a traditional installation if power is lost to the panel the latching relay output contact position remains unchanged Settings Change or Active Setting Group Change If individual settings are changed for the active setting group or one of the other setting groups or the active setting group is changed the states of the latch bits Relay Word bits LT1 through LT8 are retained much like in ...

Page 341: ...to an average of 150 cumulative latch bit state changes per day for a 25 year relay service life This requires that SELOGIC Control Equation settings SETn and RSTn for any given latch bit LTn n 1 through 8 see Figure SECTION 7 11 be set with care Settings SETn and RSTn cannot result in continuous cyclical operation of latch bit LTn Use timers to qualify conditions set in settings SETn and RSTn If ...

Page 342: ...same see Figure SECTION 7 16 and Figure SECTION 7 17 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 SECTION 7 16 Latch Control Switch with Time Delay Feedback Controlled by a Single Input to Enable Disable Reclosing Figure SECTION 7 17 Latch Contr...

Page 343: ...tting Group 3 is the active setting group SG4 Indication that setting Group 4 is the active setting group SG5 Indication that setting Group 5 is the active setting group SG6 Indication that setting Group 6 is the active setting group For example if setting Group 4 is the active setting group Relay Word bit SG4 asserts to logical 1 and the other Relay Word bits SG1 SG2 SG3 SG5 and SG6 are all deass...

Page 344: ...cal 0 setting Group 3 still remains the active setting group With setting Group 3 as the active setting group if setting SS3 is deasserted to logical 0 and one of the other settings e g setting SS5 asserts to logical 1 the relay switches from setting Group 3 as the active setting group to another setting group e g setting Group 5 as the active setting group after qualifying time setting TGR TGR Gr...

Page 345: ...oisolated input to switch between two setting groups in the SEL 351P In this example optoisolated input IN105 on the relay is connected to a SCADA contact in Figure SECTION 7 18 Each pulse of the SCADA contact changes the active setting group from one setting group e g setting Group 1 to another e g setting Group 4 The SCADA contact is not maintained just pulsed to switch from one active setting g...

Page 346: ...tion in Figure SECTION 7 19 for both setting groups 1 and 4 Figure SECTION 7 19 SELOGIC Control Equation Variable Timer SV8T Used in Setting Group Switching In this example timer SV8T is used in both setting groups different timers could have been used with the same operational result The timers reset during the setting group change allowing the same timer to be used in both setting groups Timer p...

Page 347: ...nabled 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 active setting group and Relay Word bit SG4 asserts to logical 1 After the relay has been in setting Group 4 for a time period equal to SV8PU the timer logic output SV8T asserts to logical 1 thus enabling SELOGIC Control Equation setting ...

Page 348: ... assertion of three optoisolated inputs e g IN101 IN102 and IN103 in different combinations as shown in Table SECTION 7 6 Table SECTION 7 6 Active Setting Group Switching Input Logic Input States Active IN103 IN102 IN101 Setting Group 0 0 0 Remote 0 0 1 Group 1 0 1 0 Group 2 0 1 1 Group 3 1 0 0 Group 4 1 0 1 Group 5 1 1 0 Group 6 The SEL 351P can be programmed to operate similarly Use three optois...

Page 349: ...ition to another a different setting group is activated The logic in Table SECTION 7 6 is implemented in the SELOGIC Control Equation settings in Table SECTION 7 7 Table SECTION 7 7 SELOGIC Control Equation Settings for Rotating Selector Switch Active Setting Group Switching SS1 IN103 IN102 IN101 NOT IN103 NOT IN102 IN101 SS2 IN103 IN102 IN101 NOT IN103 IN102 NOT IN101 SS3 IN103 IN102 IN101 NOT IN...

Page 350: ...ition 5 Refer to Figure SECTION 7 22 If the selector switch is rested on position 5 in Figure SECTION 7 21 setting Group 5 becomes the active setting group after qualifying time setting TGR Relay Word bit SG5 logical 1 Inputs IN101 and IN103 are energized and IN102 is deenergized SS5 IN103 IN102 IN101 IN103 NOT IN102 IN101 logical 1 NOT logical 0 logical 1 logical 1 To get from position 5 to posit...

Page 351: ...lar setting group is active e g setting Group 5 when power is lost it comes back with the same setting group active when power is restored 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 othe...

Page 352: ... SS1 through SS6 cannot result in continuous cyclical changing of the active setting group Time setting TGR qualifies settings SS1 through SS6 before changing the active setting group If optoisolated inputs IN101 through IN106 are used in settings SS1 through SS6 the inputs have their own built in debounce timer that can help in providing the necessary time qualification see Figure SECTION 7 1 SEL...

Page 353: ...Date Code 990215 Inputs Outputs Timers and Other Control Logic 7 29 SEL 351P Manual Técnico Figure SECTION 7 23 SELOGIC Control Equation Variables Timers SV1 SV1T Through SV6 SV6T ...

Page 354: ... SV1DO 2 cycles The output of the timer Relay Word bit SV1T operates output contact OUT103 OUT103 SV1T Settings Example 2 Another application idea is dedicated breaker failure protection see Figure SECTION 7 25 SV6 IN101 breaker failure initiate SV7 SV7 IN101 50P1 50N1 OUT101 SV6T retrip OUT102 SV7T breaker failure trip Figure SECTION 7 25 Dedicated Breaker Failure Scheme Created with SELOGIC Cont...

Page 355: ...uit in the dedicated breaker failure scheme in Figure SECTION 7 25 can be removed by changing the SELOGIC Control Equation setting SV7 to SV7 IN101 50P1 50N1 If the seal in logic circuit is removed optoisolated input IN101 breaker failure initiate has to be continually asserted for a breaker failure time out Timers Reset When Power is Lost Settings are Changed or Active Setting Group is Changed If...

Page 356: ...eclosing manual closing see Section 6 Close and Reclose Logic OUT103 SV1T breaker failure trip see SELOGIC Control Equation Variables Timers earlier in this section OUT104 0 output contact OUT104 not used set equal to zero OUT107 0 output contact OUT107 not used set equal to zero Operation of Output Contacts for Different Output Contact Types Output Contacts OUT101 Through OUT107 Refer to Figure S...

Page 357: ... or opens as demonstrated in Figure SECTION 7 26 An a type output contact is open when the output contact coil is deenergized and closed when the output contact coil is energized A b type output contact is closed when the output contact coil is deenergized and open when the output contact coil is energized To verify ALARM output contact mechanical integrity execute the serial port command PULSE AL...

Page 358: ...Operation ROTATING DEFAULT DISPLAY The rotating default display on the relay front panel replaces indicating panel lights Traditional indicating panel lights are turned on and off by circuit breaker auxiliary contacts front panel switches SCADA contacts etc They indicate such conditions as circuit breaker open closed reclosing relay enabled disabled ...

Page 359: ...cation In Figure SECTION 7 27 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 Circuit Breaker Status Indication In Figure SECTION 7 27 the BREAKER CLOSED panel light illuminates when the 52a circuit breaker auxiliary contact is closed When t...

Page 360: ...9 Setting the SEL 351P Recloser Control and Section 10 Serial Port Communications and Commands These text settings are displayed on the SEL 351P front panel display on a 2 second rotation see Rotating Default Display in Section 11 Additional Front Panel Interface Details for more specific operation information The following factory settings examples use optoisolated inputs IN101 and IN102 in the d...

Page 361: ...BLED Reclosing Relay Disabled In Figure SECTION 7 28 optoisolated input IN102 is deenergized to disable the reclosing relay resulting in DP1 IN102 logical 0 This results in the display of corresponding text setting DP1_0 on the front panel display 79 DISABLED Circuit Breaker Status Indication Make SELOGIC Control Equation display point setting DP2 DP2 IN101 Make corresponding complementary text se...

Page 362: ...plement set only one of the text settings For example to display just the breaker closed condition but not the breaker open condition make the following settings DP2 IN101 52a circuit breaker auxiliary contact connected to input IN101 see Figure SECTION 7 28 DP2_1 BREAKER CLOSED displays when DP2 logical 1 DP2_0 blank Circuit Breaker Closed In Figure SECTION 7 28 optoisolated input IN101 is energi...

Page 363: ...P5_1 on the front panel display FEEDER 1204 This can also be realized with the following settings DP5 0 set directly to logical 0 DP5_1 blank DP5_0 FEEDER 1204 displays when DP5 logical 0 This results in the continual display of text setting DP5_0 on the front panel display FEEDER 1204 Active Setting Group Switching Considerations The SELOGIC Control Equation display point settings DPn n 1 through...

Page 364: ... This results in the display of corresponding text setting DP1_0 on the front panel display 79 DISABLED Now the active setting group is switched from setting Group 1 to 4 Switch to Setting Group 4 as the Active Setting Group When setting Group 4 is the active setting group the reclosing relay is always disabled and optoisolated input IN102 has no control over the reclosing relay The text settings ...

Page 365: ...al 1 indicating there is sufficient energy for a trip operation CLCAP close capacitor charged higher than 20 Vdc CLCAP logical 1 indicating that the close capacitor is charged to a point from which it can be charged at a faster rate by the capacitor charger WBTR energize trip output contact form c for a trip operation WBTR logical 1 WBCL energize close output contact form c for a close operation W...

Page 366: ...d be limited to no more than 0 1 A and should be fuse protected The SF6 gas pressure is typically at 1 3 atmospheres atm If the pressure goes below threshold setting SF6PRS factory set at SF6PRS 1 1 atm access with SET G command then Relay Word bit SF6LO asserts to logical 1 The pressure going below threshold setting SF6PRS also causes the ALARM output contact to pulse for 5 seconds see Table 13 1...

Page 367: ...hetting Voltage setting SF6PRS trip cap fully charged b a breaker aux contacts Relay Word Bits TRIP from Fig 5 1 CLOSE from Fig 6 1 52b 52a CONTROL connector J5 recloser partial see Note 1 Note 1 Terminal 9 is the return for the 24 Vdc whetting voltage on terminal 1 when terminal 1 is paralleled to additional applications e g to whet opto inputs IN101 IN106 Terminal 1 has a load limit of 0 1 A and...

Page 368: ......

Page 369: ...ation Counters 8 11 Via Serial Port 8 11 Via Front Panel 8 12 Determination of Control Initiated Trips and Externally Initiated Trips 8 12 Factory Default Setting Example 8 13 Additional Example 8 13 Battery System Monitor 8 14 Battery System Operation 8 15 SEL 351P Puts Itself To Sleep 8 15 Keep 12 Vdc on While SEL 351P is Asleep 8 16 Wake Up the SEL 351P 8 16 Battery System Diagnostics 8 16 Auto...

Page 370: ...al Settings for Contact Wear Monitor 8 2 Table 8 2 Access Level E EZ Global Settings for Contact Wear Monitor 8 2 Table 8 3 Parameters Used to Automatically Set Contact Wear Monitor 8 3 Table 8 4 Breaker Maintenance Information for a 25 kV Circuit Breaker 8 4 Table 8 5 Demand Meter Settings and Settings Range 8 25 FIGURES Figure 8 1 Plotted Breaker Maintenance Points for a 25 kV Circuit Breaker 8 ...

Page 371: ... updates and stores the contact wear information and the number of trip operations in non volatile memory You can view this information through the front panel display and by communicating with the SEL 351P through any serial communication port with a computer Individual phase Breaker Contact Wear bits BCWA BCWB and BCWC assert when the contact wear percentage on their respective phases reaches 10...

Page 372: ...O Y N is set to AUTO or N Table SECTION 8 1 Access Level 2 Global Settings for Contact Wear Monitor Setting Definition Range EBMON Enable Breaker Recloser Monitor Y Yes or N No COSP1 Close Open set point 1 maximum 0 65000 close open operations COSP2 Close Open set point 2 middle 0 65000 close open operations COSP3 Close Open set point 3 minimum 0 65000 close open operations KASP1 kA Interrupted se...

Page 373: ... FZ command to enter and save the following Access Level E EZ global settings for the contact wear monitor Recloser Wear Monitor AUTO Y N AUTO Interrupt Rating 6000 8000 12000 A pri 12000 When you enter and save the above global EZ settings the SEL 351P automatically sets the following set points in the Access Level 2 global settings EBMON Y COSP1 30000 COSP2 5000 COSP3 40 KASP1 0 17 KASP2 3 00 KA...

Page 374: ...tenance Information for a 25 kV Circuit Breaker Current Interruption Level kA Permissible Number of Close Open Operations 0 0 1 2 10 000 2 0 3 700 3 0 1 500 5 0 400 8 0 150 10 0 85 20 0 12 The action of a circuit breaker closing and then later opening is counted as one close open operation The breaker maintenance information in Table SECTION 8 4 is plotted in Figure SECTION 8 1 Connect the plotted...

Page 375: ... Code 990430 Breaker Recloser Monitor Battery System Monitor 8 5 Metering and Load Profile Functions SEL 351P Manual Técnico Figure SECTION 8 1 Plotted Breaker Maintenance Points for a 25 kV Circuit Breaker ...

Page 376: ...ls In Figure SECTION 8 2 note that set points KASP1 COSP1 and KASP3 COSP3 are set with breaker maintenance information from the two extremes in Table SECTION 8 4 and Figure SECTION 8 1 In this example set point KASP2 COSP2 provides an intermediate breaker maintenance point in the breaker maintenance information in Table SECTION 8 4 and Figure SECTION 8 1 Set point KASP2 COSP2 should be set to prov...

Page 377: ...430 Breaker Recloser Monitor Battery System Monitor 8 7 Metering and Load Profile Functions SEL 351P Manual Técnico Figure SECTION 8 2 SEL 351P Recloser Control Breaker Maintenance Curve for a 25 kV Circuit Breaker ...

Page 378: ...d in current values The acquired current values are then applied to the breaker maintenance curve and the breaker monitor accumulated currents trips see references in previous paragraph In the factory default settings the SELOGIC Control Equation breaker monitor initiation setting is set BKMON WBTR WBTRT 52A WBTR and WBTRT are the trip logic outputs of Figure 7 29 Refer to Figure SECTION 8 3 When ...

Page 379: ...he operation of the breaker maintenance curve and how it integrates for various current levels 0 to 10 Breaker Wear Refer to Figure SECTION 8 4 7 0 kA is interrupted 20 times 20 close open operations 20 0 integrating the contact wear curve from 0 to the 10 wear level Compare the 100 and 10 curves and note that for a given current value the 10 curve has only 1 10 of the close open operations of the...

Page 380: ...ring and Load Profile Functions SEL 351P Manual Técnico Figure SECTION 8 4 Breaker Monitor Accumulates 10 Wear Figure SECTION 8 5 Breaker Monitor Accumulates 25 Wear Figure SECTION 8 6 Breaker Monitor Accumulates 50 Wear Figure SECTION 8 7 Breaker Monitor Accumulates 100 Wear ...

Page 381: ...r C reaches the 100 wear level see Figure SECTION 8 7 a corresponding Relay Word bit BCWA BCWB or BCWC asserts Relay Word bit Definition BCWA Phase A breaker contact wear has reached the 100 wear level BCWB Phase B breaker contact wear has reached the 100 wear level BCWC Phase C breaker contact wear has reached the 100 wear level BCW BCWA BCWB BCWC Example Applications These logic outputs can be u...

Page 382: ...eloaded for each individual phase value The BRE R command resets the accumulated values and the percent wear for all three phases For example if contact wear has reached the 100 wear level for A phase the corresponding Relay Word bit BCWA asserts BCWA logical 1 Execution of the BRE R command resets the wear levels for all three phases back to 0 and consequently causes Relay Word bit BCWA to deasse...

Page 383: ...TR is classified as a recloser control trip TRIP is asserted at the same time and the current and trip count information is accumulated under recloser control initiated trips Cntrl Trip Refer to Figure 7 29 Relay Word bit WBTRT asserts cycle after WBTR trip output asserts WBTRT remains asserted for an additional 30 cycles after WBTR trip output deasserts This 30 cycle dropout time overlaps any ope...

Page 384: ...rol initiated trip Cntrl Trips If the control switch trip or some other external trip asserts energizing the trip bus the breaker monitor classifies it as an externally initiated trip because the TRIP Relay Word bit is not asserted when BKMON asserts input IN102 energized Thus the current and trip count information is accumulated under externally initiated trips Ext Trips BATTERY SYSTEM MONITOR Th...

Page 385: ...d The DISCHG Relay Word bit asserts when the batteries are discharging when the 120 Vac source is deenergized and the SEL 351P is operating from battery power If the charging current drops below 5 mA or the discharge current drops below 100 mA the battery is considered failed or disconnected In either case the NOBATT Relay Word bit asserts If the battery monitor charger board is OK inside the SEL ...

Page 386: ...ake up message is received via the side panel Wake up port If the SEL 351P went to sleep because the temperature compensated battery voltage fell below 80 the Wake up port is dead and cannot receive the wake up message to wake up the SEL 351P The wake up message is a character string matching the CHWAKE global setting SET G command default is CHWAKE ABCD When the SEL 351P receives this character s...

Page 387: ... report Battery Load Test via Front Panel You can initiate a battery load test through the front panel pushbuttons located just below the liquid crystal display Press the OTHER pushbutton a new screen appears with BTT battery test as one of the choices Using the secondary function arrow pushbuttons move the underscore to BTT To test the battery press the secondary function SELECT pushbutton The SE...

Page 388: ...the execution of the BTT NOW command 3 If the battery is charging or discharging the battery load test proceeds and the following message is displayed Battery test initiated Duration 5 seconds Battery test state is OK FAILED The periods appear on each consecutive line at each second of the 5 second battery load test At the end of the test OK or FAILED is displayed If the battery fails the 1 A load...

Page 389: ...FAIL battery monitor charger failed or communications with the battery monitor charger are temporarily interrupted CAP 0 to 100 battery charge level independent of temperature HRS_LFT hh mm hours and minutes left to run on battery in discharge mode before the SEL 351P puts itself to sleep dependent on setting Battery capacity for sleep 0 100 Shows XX XX if battery is charging 5V_PSBC internal 5 V ...

Page 390: ...nd frequency If you need accurate voltage and power metering you must connect three phase voltage to the control from a set of potential instrument transformers You use the EZ Level SET EZ command to set the PT Ratio to reflect the ratio of these potential instrument transformers If you connect only single phase 120 Vac to power the SEL 351P the factory wired terminal strip jumpers route this volt...

Page 391: ...n 10 Serial Port Communications and Commands With either Thermal Demand or Rolling Average Demand enabled the SEL 351P provides demand and peak demand metering for the following values Currents IA B C N Input currents A primary IG Residual ground current A primary IG 3I0 IA IB IC 3I2 Negative sequence current A primary Power MWA B C 3P Single and three phase megawatts MVARA B C 3P Single and three...

Page 392: ...anual Técnico Figure SECTION 8 9 Response of Thermal and Rolling Demand Meters to a Step Input setting DMTC 15 minutes Thermal Demand Meter Response EDEM THM The response of the thermal demand meter in Figure SECTION 8 9 middle to the step current input top is analogous to the series RC circuit in Figure SECTION 8 10 ...

Page 393: ...tantaneously the thermal demand meter response is not immediate either for the increasing or decreasing applied instantaneous current The thermal demand meter response time is based on the demand meter time constant setting DMTC see Table SECTION 8 5 Note in Figure SECTION 8 9 the thermal demand meter response middle is at 90 0 9 per unit of full applied value 1 0 per unit after a time period equa...

Page 394: ...llowing is a step by step calculation of the rolling demand response example in Figure SECTION 8 9 bottom Time 0 Minutes Presume that the instantaneous current has been at zero for quite some time before Time 0 minutes or the demand meters were reset The three 5 minute intervals in the sliding time window at Time 0 minutes each integrate into the following 5 minute totals 5 Minute Totals Correspon...

Page 395: ... Corresponding 5 Minute Interval 1 0 per unit 0 to 5 minutes 1 0 per unit 5 to 10 minutes 1 0 per unit 10 to 15 minutes 3 0 per unit Rolling demand meter response at Time 15 minutes 3 0 3 1 0 per unit Demand Meter Settings Table SECTION 8 5 Demand Meter Settings and Settings Range Setting Definition Range EDEM Demand meter type THM thermal ROL rolling DMTC Demand meter time constant 5 10 15 30 or ...

Page 396: ... are also available as stated at the beginning of this subsection The demand current pickup settings in Table SECTION 8 5 are applied to demand current meter outputs as shown in Figure SECTION 8 11 For example when residual ground demand current IG DEM goes above corresponding demand pickup GDEMP Relay Word bit GDEM asserts to logical 1 Use these demand current logic outputs PDEM NDEM GDEM and QDE...

Page 397: ...ord bit GDEM to detect the residual ground unbalance demand current IG DEM and effectively raise the pickup of the residual ground time overcurrent element 51G1T This is accomplished with the following settings from Table SECTION 8 5 pertinent residual ground overcurrent element settings and SELOGIC Control Equation torque control setting 51G1TC EDEM THM DMTC 5 GDEMP 1 0 51G1P 1 50 50G5P 2 30 51G1...

Page 398: ...low moving general trends Residual Ground Demand Current Goes Above Pickup GDEMP When unbalance current IG increases unbalance demand current IG DEM follows going above corresponding demand pickup GDEMP 1 00 A secondary and Relay Word bit GDEM asserts to logical 1 This results in SELOGIC Control Equation torque control setting 51G1TC being in the state 51G1TC GDEM GDEM 50G5 NOT GDEM GDEM 50G5 NOT ...

Page 399: ...pushbutton See the METER pushbutton in the Pushbutton Primary Functions subsection in the Front Panel Interface section of the SEL 351P Quick Start Installation and User s Guide Demand Metering Updating and Storage The SEL 351P updates demand values approximately every 2 seconds The relay stores peak demand values to nonvolatile storage once per day it overwrites the previous stored value if it is...

Page 400: ...l restore the energy values saved at 23 50 hours on the previous day Maximum Minimum Metering View or Reset Maximum Minimum Metering Information Via Serial Port See MET M Maximum Minimum Metering in subsection MET Command Metering Data in Section 10 Serial Port Communications and Commands The MET M command displays maximum minimum metering for the following values Currents IA B C N Input currents ...

Page 401: ...OGIC Control Equation setting FAULT also has control over front panel target LEDs A B and C see Front Panel Target LEDs in Section 5 Trip and Target Logic The metering value is above the previous maximum or below the previous minimum for 2 cycles For voltage values the voltage is above 13 V secondary For current values the currents are above 0 05 A secondary 1 A nominal Megawatt and megavar values...

Page 402: ...WHBO MWHCO MWH3O Phase and 3 phase megaWATT hours out MVRHAI MVRHBI MVRHCI MVRH3I Phase and 3 phase megaVAR hours in MVRHAO MVRHBO MVRHCO MVRH3O Phase and 3 phase megaVAR hours out Labels are entered into the setting either comma or space delimited but are displayed as space delimited Load profiling is disabled if the LDLIST setting is empty i e set to NA or 0 which is displayed as LDLIST 0 The lo...

Page 403: ...t Chronological progression through the report is down the page and in descending row number LDP 47 22 If LDP 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 Revers...

Page 404: ...ENTER STX FEEDER 1 Date mm dd yy Time hh mm ss sss STATION A FID SEL 351P R100 V0 D990213 CID C867 BCBFID R103 DATE TIME label1 label2 label3 label4 label5 labeln 512 07 23 96 07 00 35 xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx 511 07 23 96 08 00 15 xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx 510 07 23 96 09 00 01 xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx xxxxx xxx x...

Page 405: ...gure 9 3 U S Very Inverse Curve U3 9 5 Figure 9 4 U S Extremely Inverse Curve U4 9 5 Figure 9 5 U S Short Time Inverse Curve U5 9 6 Figure 9 6 I E C Class A Curve Standard Inverse C1 9 6 Figure 9 7 I E C Class B Curve Very Inverse C2 9 6 Figure 9 8 I E C Class C Curve Extremely Inverse C3 9 7 Figure 9 9 I E C Long Time Inverse Curve C4 9 7 Figure 9 10 I E C Short Time Inverse Curve C5 9 8 Figure 9...

Page 406: ......

Page 407: ...n n 1 2 3 or F 23 SET EZ n EZ Recloser Control Traditional recloser control settings e g minimum trips fast delay curves reclose intervals for settings group n n 1 2 3 4 5 6 1 3 SET FZ EZ Global Automatic recloser monitor battery monitor etc 3 located at end of this section located at the end of the Settings section in the SEL 351P Quick Start Installation and User s Guide View settings with the r...

Page 408: ...n Table SECTION 9 1 operate at Access Level 2 screen prompt To change a specific setting enter the command SET m n s TERSE where m L G R T P EZ or FZ parameter m is not entered for the Group settings n group 1 6 or port 1 2 3 F The SEL 351P selects the active group or port if n is not specified s the name of the specific setting you wish to jump to and begin setting If s is not entered the control...

Page 409: ...trol Group or Logic settings for the active setting group see Table SECTION 9 1 the SEL 351P is disabled while it saves the new settings The ALARM contact closes momentarily for b contact opens for an a see Figure 7 26 and the CONTROL ENABLED LED extinguishes while the control is disabled The SEL 351P is disabled for about 1 second If Logic settings are changed for the active group the SEL 351P ca...

Page 410: ... tp TD 0 0963 3 88 M2 1 tp TD 0 0352 5 67 M2 1 tr TD 3 88 1 M2 tr TD 5 67 1 M2 U S Short Time Inverse Curve U5 tp TD 0 00262 0 00342 M0 02 1 tr TD 0 323 1 M2 I E C Class A Curve Standard Inverse C1 I E C Class B Curve Very Inverse C2 tp TD 0 14 M0 02 1 tp TD 13 5 M 1 tr TD 13 5 1 M2 tr TD 47 3 1 M2 I E C Class C Curve Extremely Inverse C3 I E C Long Time Inverse Curve C4 tp TD 80 0 M2 1 tp TD 120 ...

Page 411: ...351P Recloser Control 9 5 SEL 351P Manual Técnico Figure SECTION 9 1 U S Moderately Inverse Curve U1 Figure SECTION 9 2 U S Inverse Curve U2 Figure SECTION 9 3 U S Very Inverse Curve U3 Figure SECTION 9 4 U S Extremely Inverse Curve U4 ...

Page 412: ...EL 351P Recloser Control Date Code 990430 SEL 351P Manual Técnico Figure SECTION 9 5 U S Short Time Inverse Curve U5 Figure SECTION 9 6 I E C Class A Curve Standard Inverse C1 Figure SECTION 9 7 I E C Class B Curve Very ...

Page 413: ...te Code 990430 Setting the SEL 351P Recloser Control 9 7 SEL 351P Manual Técnico Inverse C2 Figure SECTION 9 8 I E C Class C Curve Extremely Inverse C3 Figure SECTION 9 9 I E C Long Time Inverse Curve C4 ...

Page 414: ...1 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 50Hz 6000 5000 3000 2500 1500 1250 600 500 300 250 150 125 60 50 30 25 15 12 5 6 5 3 2 5 DWG M300G153 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 Figure SECTION 9 10 I E C Short Time Inverse Curve C5 ...

Page 415: ...Date Code 990430 Setting the SEL 351P Recloser Control 9 9 SEL 351P Manual Técnico Figure 9 11 Recloser Control Response Curves A C N and W ...

Page 416: ...9 10 Setting the SEL 351P Recloser Control Date Code 990430 SEL 351P Manual Técnico Figure 9 12 Recloser Control Response Curves B R 2 and 3 ...

Page 417: ...Date Code 990430 Setting the SEL 351P Recloser Control 9 11 SEL 351P Manual Técnico Figure 9 13 Recloser Control Response Curves D 8PLUS and 16 ...

Page 418: ...9 12 Setting the SEL 351P Recloser Control Date Code 990430 SEL 351P Manual Técnico Figure 9 14 Recloser Control Response Curves F H J and 1 ...

Page 419: ...Date Code 990430 Setting the SEL 351P Recloser Control 9 13 SEL 351P Manual Técnico Figure 9 15 Recloser Control Response Curves G V 6 and 13 ...

Page 420: ...9 14 Setting the SEL 351P Recloser Control Date Code 990430 SEL 351P Manual Técnico Figure 9 16 Recloser Control Response Curves E P and 18 ...

Page 421: ...Date Code 990430 Setting the SEL 351P Recloser Control 9 15 SEL 351P Manual Técnico Figure 9 17 Recloser Control Response Curves KG Y Z and 5 ...

Page 422: ...9 16 Setting the SEL 351P Recloser Control Date Code 990430 SEL 351P Manual Técnico Figure 9 18 Recloser Control Response Curves KP M T and 17 ...

Page 423: ...Date Code 990430 Setting the SEL 351P Recloser Control 9 17 SEL 351P Manual Técnico Figure 9 19 Recloser Control Response Curves 4 9 11 and 14 ...

Page 424: ...9 18 Setting the SEL 351P Recloser Control Date Code 990430 SEL 351P Manual Técnico Figure 9 20 Recloser Control Response Curves L 7 8 and 15 ...

Page 425: ...50C2 50A3 50B3 3 50C3 50A4 50B4 50C4 50AB1 50BC1 50CA1 50AB2 4 50BC2 50CA2 50AB3 50BC3 50CA3 50AB4 50BC4 50CA4 5 50A 50B 50C 51P1 51P1T 51P1R 51N1 51N1T 6 51N1R 51G1 51G1T 51G1R 51P2 51P2T 51P2R 51N2 7 51N2T 51N2R 51G2 51G2T 51G2R 51Q 51QT 51QR 8 50P1 50P2 50P3 50P4 50N1 50N2 50N3 50N4 9 67P1 67P2 67P3 67P4 67N1 67N2 67N3 67N4 10 67P1T 67P2T 67P3T 67P4T 67N1T 67N2T 67N3T 67N4T 11 50G1 50G2 50G3 50...

Page 426: ... 46 HLG CLP RPP RPG RPS SEQC 3PHV GTP 471 RMB8A RMB7A RMB6A RMB5A RMB4A RMB3A RMB2A RMB1A 481 TMB8A TMB7A TMB6A TMB5A TMB4A TMB3A TMB2A TMB1A 491 RMB8B RMB7B RMB6B RMB5B RMB4B RMB3B RMB2B RMB1B 501 TMB8B TMB7B TMB6B TMB5B TMB4B TMB3B TMB2B TMB1B 511 LBOKB CBADB RBADB ROKB LBOKA CBADA RBADA ROKA 52 53 54 55 56 RAW52B RAW52A WB52A WBBRK WBCL WBTR CLCAP TRCAP 1 MIRRORED BITS elements only valid in fi...

Page 427: ...ment C phase current above pickup setting 50P3P see Figure 3 1 50A4 Level 4 A phase instantaneous overcurrent element A phase current above pickup setting 50P4P see Figure 3 1 50B4 Level 4 B phase instantaneous overcurrent element B phase current above pickup setting 50P4P see Figure 3 1 50C4 Level 4 C phase instantaneous overcurrent element C phase current above pickup setting 50P4P see Figure 3 ...

Page 428: ...phase to phase instantaneous overcurrent element AB phase to phase current above pickup setting 50PP4P see Figure 3 7 50BC4 Level 4 BC phase to phase instantaneous overcurrent element BC phase to phase current above pickup setting 50PP4P see Figure 3 7 50CA4 Level 4 CA phase to phase instantaneous overcurrent element CA phase to phase current above pickup setting 50PP4P see Figure 3 7 5 50A 50A1 5...

Page 429: ...P2T reset see Figure 3 15 Testing 51N2 Neutral ground current channel IN above pickup setting 51N2P for neutral ground time overcurrent element 51N2T see Figure 3 17 Testing Control 7 51N2T Neutral ground time overcurrent element 51N2T timed out see Figure 3 17 Tripping 51N2R Neutral ground time overcurrent element 51N2T reset see Figure 3 17 Testing 51G2 Residual ground current above pickup setti...

Page 430: ...urrent channel IN above pickup setting 50N3P see Figure 3 8 50N4 Level 4 neutral ground instantaneous overcurrent element neutral ground current channel IN above pickup setting 50N4P see Figure 3 8 9 67P1 Level 1 phase instantaneous overcurrent element derived from 50P1 see Figure 3 3 67P2 Level 2 phase instantaneous overcurrent element derived from 50P2 see Figure 3 3 67P3 Level 3 phase instantan...

Page 431: ... element 67N4T timed out derived from 67N4 see Figure 3 8 11 50G1 Level 1 residual ground instantaneous overcurrent element residual ground current above pickup setting 50G1P see Figure 3 10 Tripping Testing Control 50G2 Level 2 residual ground instantaneous overcurrent element residual ground current above pickup setting 50G2P see Figure 3 10 50G3 Level 3 residual ground instantaneous overcurrent...

Page 432: ...2 Level 2 negative sequence instantaneous overcurrent element derived from 50Q2 see Figure 3 12 67Q3 Level 3 negative sequence instantaneous overcurrent element derived from 50Q3 see Figure 3 12 67Q4 Level 4 negative sequence instantaneous overcurrent element derived from 50Q4 see Figure 3 12 13 67G1T Level 1 residual ground definite time overcurrent element 67G1T timed out derived from 67G1 see F...

Page 433: ...ound current channel IN above pickup setting 50N6P see Figure 3 9 50G5 Level 5 residual ground instantaneous overcurrent element residual ground current above pickup setting 50G5P see Figure 3 11 50G6 Level 6 residual ground instantaneous overcurrent element residual ground current above pickup setting 50G6P see Figure 3 11 50Q5 Level 5 negative sequence instantaneous overcurrent element negative ...

Page 434: ...gures 4 18 and 4 19 Forward negative sequence voltage polarized directional element see Figures 4 17 and 4 19 Reverse negative sequence voltage polarized directional element see Figures 4 17 and 4 19 Forward negative sequence voltage polarized directional element for ground see Figures 4 4 4 9 4 12 and 4 13 Reverse negative sequence voltage polarized directional element for ground see Figures 4 4 ...

Page 435: ...ontrol 27B1 B phase instantaneous undervoltage element B phase voltage below pickup setting 27P1P see Figure 3 21 27C1 C phase instantaneous undervoltage element C phase voltage below pickup setting 27P1P see Figure 3 21 27A2 A phase instantaneous undervoltage element A phase voltage below pickup setting 27P2P see Figure 3 21 27B2 B phase instantaneous undervoltage element B phase voltage below pi...

Page 436: ...ve pickup setting 59PP see Figure 3 22 20 59BC BC phase to phase instantaneous overvoltage element BC phase to phase voltage above pickup setting 59PP see Figure 3 22 59CA CA phase to phase instantaneous overvoltage element CA phase to phase voltage above pickup setting 59PP see Figure 3 22 59N1 Zero sequence instantaneous overvoltage element zero sequence voltage above pickup setting 59N1P see Fi...

Page 437: ... 21 3P59 59A1 59B1 59C1 see Figure 3 21 22 81D1 Level 1 instantaneous frequency element with corresponding pickup setting 81D1P see Figure 3 28 Testing 81D2 Level 2 instantaneous frequency element with corresponding pickup setting 81D2P see Figure 3 28 81D3 Level 3 instantaneous frequency element with corresponding pickup setting 81D3P see Figure 3 28 81D4 Level 4 instantaneous frequency element w...

Page 438: ...el 6 definite time frequency element 81D6T timed out derived from 81D6 see Figure 3 28 VPOLV Positive sequence polarization voltage valid see Figure 4 14 Testing LOP Loss of potential see Figure 4 1 Testing Special directional control schemes 24 50NF 50NR Forward direction neutral ground overcurrent threshold exceeded see Figures 4 4 4 7 and 4 11 Reverse direction neutral ground overcurrent thresh...

Page 439: ...ote Bit 5 asserted see Figure 7 9 Remote Bit 6 asserted see Figure 7 9 Remote Bit 7 asserted see Figure 7 9 Remote Bit 8 asserted see Figure 7 9 Control via serial port 27 LT1 LT2 LT3 LT4 LT5 LT6 LT7 LT8 Latch Bit 1 asserted see Figure 7 11 Latch Bit 2 asserted see Figure 7 11 Latch Bit 3 asserted see Figure 7 11 Latch Bit 4 asserted see Figure 7 11 Latch Bit 5 asserted see Figure 7 11 Latch Bit 6...

Page 440: ...C Control Equation variable timer output SV5T asserted see Figure 7 23 Control SV6T SELOGIC Control Equation variable timer output SV6T asserted see Figure 7 23 SV7T SELOGIC Control Equation variable timer output SV7T asserted see Figure 7 24 SV8T SELOGIC Control Equation variable timer output SV8T asserted see Figure 7 24 30 SV9 SV10 SV11 SV12 SELOGIC Control Equation variable timer input SV9 ass...

Page 441: ...SV16T SELOGIC Control Equation variable timer output SV16T asserted see Figure 7 24 32 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 and Table 6 1 79LO Reclosing relay in the Lockout State see Figure 6 5 and Table 6 1 SH0 Reclosing relay shot counter 0 see Table 6 3 SH1 Reclosing relay shot counter 1 see Table 6 ...

Page 442: ...ure 3 24 TRGTR Target Reset TRGTR pulses to logical 1 for one processing interval when either the TARGET RESET Pushbutton is pushed or the TAR R Target Reset serial port command is executed see Figures 5 1 and 5 17 Control 52A Circuit breaker status asserts to logical 1 when recloser is closed see Figure 6 1 Indication COMMT Communication Scheme Trip see Figure 5 1 Tripping CHRGG Battery is Chargi...

Page 443: ...e Battery System Monitor in Section 8 Indication DTFAIL Battery discharge test has failed see Battery System Monitor in Section 8 Alarm indication 37 ALARM Output contact ALARM asserted see Figure 7 26 OUT107 Output contact OUT107 asserted see Figure 7 26 OUT106 Output contact OUT106 asserted see Figure 7 26 OUT105 Output contact OUT105 asserted see Figure 7 26 OUT104 Output contact OUT104 asserte...

Page 444: ...ock trip input extension see Figure 5 14 Testing TRIP Trip logic output asserted see Figure 5 1 Output contact assignment OC Asserts 1 4 cycle for Open Command execution see Figure 1 19 Tripping Control CC Asserts 1 4 cycle for Close Command execution see Figure 1 20 CLG Ground cold load pickup scheme enabled see Figures 1 3 and 1 4 Control NOMSG Recloser control mainboard hasn t received message ...

Page 445: ...utput see Figure 1 35 PB4 Alternate Settings pushbutton output see Figure 1 35 PB5 Lock pushbutton output see Figure 1 35 PB6 Aux 1 pushbutton output see Figure 1 36 PB7 Aux 2 pushbutton output see Figure 1 36 PB8 Close pushbutton output see Figure 1 36 43 PB9 Trip pushbutton output see Figure 1 36 32NF 32NR Forward directional control routed to neutral ground overcurrent elements see Figures 4 4 ...

Page 446: ... lockout ground see Figure 1 9 OLS Operations to lockout Sensitive earth fault see Figure 1 10 HTP High current trip phase see Figure 1 11 HTG High current trip ground see Figure 1 12 HLP High current lockout phase see Figure 1 13 46 HLG High current lockout ground see Figure 1 14 CLP Phase cold load pickup scheme enabled see Figure 1 2 RPP Restore pickup phase see Figures 1 1 and 1 2 RPG Restore ...

Page 447: ...in firmware versions 1 and greater 48 TMB8A Channel A transmit bit 8 TMB7A Channel A transmit bit 7 TMB6A Channel A transmit bit 6 TMB5A Channel A transmit bit 5 TMB4A Channel A transmit bit 4 TMB3A Channel A transmit bit 3 TMB2A Channel A transmit bit 2 TMB1A Channel A transmit bit 1 49 RMB8B Channel B received bit 8 RMB7B Channel B received bit 7 RMB6B Channel B received bit 6 RMB5B Channel B re...

Page 448: ... 53 Reserved for future use 54 Reserved for future use 55 Reserved for future use 56 RAW52B 52b breaker auxiliary status not time qualified see Figure 7 29 Testing RAW52A 52a breaker auxiliary status not time qualified see Figure 7 29 WB52A Breaker status time qualified see Figure 7 29 Breaker status WBBRK Break output contact form b see Figure 7 29 Testing WBCL Close output contact form c see Fig...

Page 449: ...nt Transformer Ratios Refer to Settings Sheet 1 of 23 Phase and neutral current transformer ratios are set independently The IN channel is wired up as a sensitive residual current channel in the SEL 351P The neutral current transformer ratio will be set equal to the phase current transformer ratio The neutral current channel is scaled to measure sensitive residual currents less than 1 5 A secondar...

Page 450: ... the controlling enable setting For example the neutral ground time overcurrent elements settings on Sheet 5 settings 51N1P through 51N1RS and 51N2P through 51N2RS are controlled by enable setting E51N Other System Parameters Refer to Settings Sheet 18 of 23 The global settings NFREQ and PHROT allow you to configure the SEL 351P to your specific system Set NFREQ equal to your nominal power system ...

Page 451: ...Date Code 990430 Setting the SEL 351P Recloser Control 9 9 SEL 351P Manual Técnico Figure 9 12 Recloser Control Response Curves B R 2 and 3 ...

Page 452: ...9 10 Setting the SEL 351P Recloser Control Date Code 990430 SEL 351P Manual Técnico Figure 9 13 Recloser Control Response Curves D 8PLUS and 16 ...

Page 453: ...Date Code 990430 Setting the SEL 351P Recloser Control 9 11 SEL 351P Manual Técnico Figure 9 14 Recloser Control Response Curves F H J and 1 ...

Page 454: ...9 12 Setting the SEL 351P Recloser Control Date Code 990430 SEL 351P Manual Técnico Figure 9 15 Recloser Control Response Curves G V 6 and 13 ...

Page 455: ...Date Code 990430 Setting the SEL 351P Recloser Control 9 13 SEL 351P Manual Técnico Figure 9 16 Recloser Control Response Curves E P and 18 ...

Page 456: ...9 14 Setting the SEL 351P Recloser Control Date Code 990430 SEL 351P Manual Técnico Figure 9 17 Recloser Control Response Curves KG Y Z and 5 ...

Page 457: ...Date Code 990430 Setting the SEL 351P Recloser Control 9 15 SEL 351P Manual Técnico Figure 9 18 Recloser Control Response Curves KP M T and 17 ...

Page 458: ...9 16 Setting the SEL 351P Recloser Control Date Code 990430 SEL 351P Manual Técnico Figure 9 19 Recloser Control Response Curves 4 9 11 and 14 ...

Page 459: ...dance magnitude 0 25 1275 00 Ω secondary Z0MAG Zero sequence line impedance angle 40 00 90 00 degrees Z0ANG Line length 0 10 999 00 unitless LL Instantaneous Definite Time Overcurrent Enable Settings Phase element levels N 1 6 see Figures 3 1 3 2 3 3 and 3 7 E50P Neutral ground element levels channel IN N 1 6 see Figures 3 8 and 3 9 E50N Residual ground element levels N 1 6 see Figures 3 10 and 3 ...

Page 460: ...dependent on preceding enable setting E50P 1 6 Pickup OFF 0 05 20 00 A 50P1P Pickup OFF 0 05 20 00 A 50P2P Pickup OFF 0 05 20 00 A 50P3P Pickup OFF 0 05 20 00 A 50P4P Pickup OFF 0 05 20 00 A 50P5P Pickup OFF 0 05 20 00 A 50P6P Phase Definite Time Overcurrent Elements see Figure 3 3 Number of phase element time delay settings dependent on preceding enable setting E50P 1 6 all four time delay settin...

Page 461: ...ime delay 0 00 16000 00 cycles in 0 25 cycle steps 67N2D Time delay 0 00 16000 00 cycles in 0 25 cycle steps 67N3D Time delay 0 00 16000 00 cycles in 0 25 cycle steps 67N4D Residual Ground Inst Def Time Overcurrent Elements see Figures 3 10 and 3 11 Number of residual ground element pickup settings dependent on preceding enable setting E50G 1 6 Pickup OFF 0 05 20 00 A 50G1P Pickup OFF 0 05 20 00 A...

Page 462: ... in 0 25 cycle steps 67Q2D Time delay 0 00 16000 00 cycles in 0 25 cycle steps 67Q3D Time delay 0 00 16000 00 cycles in 0 25 cycle steps 67Q4D IMPORTANT See Appendix F for information on setting negative sequence overcurrent elements Phase Time Overcurrent Elements see Figure 3 14 and Figure 3 15 Make the following settings if preceding enable setting E51P 1 or 2 Pickup OFF 0 10 3 20 A 51P1P Curve...

Page 463: ...ting E51N 2 Pickup OFF 0 005 0 160 A 51N2P Curve U1 U5 C1 C5 recloser or user curve see Figures 9 1 through 9 20 51N2C Time Dial 0 50 15 00 for curves U1 U5 0 05 1 00 for curves C1 C5 0 10 2 00 for recloser and user curves 51N2TD Electromechanical Reset Y N applicable only to curves U1 U5 C1 C5 51N2RS Constant time adder 0 00 60 00 cyc 51N2CT Minimum response 0 00 60 00 cyc 51N2MR Residual Ground ...

Page 464: ...ime adder 0 00 60 00 cyc 51QCT Minimum response 0 00 60 00 cyc 51QMR IMPORTANT See Appendix F for information on setting negative sequence overcurrent elements Load Encroachment Elements see Figure 4 2 Make the following settings if preceding enable setting ELOAD Y Forward load impedance 0 25 320 00 Ω secondary ZLF Reverse load impedance 0 25 320 00 Ω secondary ZLR Positive forward load angle 90 t...

Page 465: ...rse directional residual ground pickup 0 05 1 00 A 50GRP Positive sequence current restraint factor I0 I1 0 02 0 50 unitless a0 Forward directional Z0 threshold 320 00 to 320 00 Ω secondary Z0F Reverse directional Z0 threshold 320 00 to 320 00 Ω secondary Z0R Voltage Elements see Figures 3 21 3 22 and 3 23 Make the following settings if preceding enable setting EVOLT Y Phase undervoltage pickup OF...

Page 466: ...D2P Level 2 time delay 2 00 16000 00 cycles in 0 25 cycle steps 81D2D Level 3 pickup OFF 40 10 65 00 Hz 81D3P Level 3 time delay 2 00 16000 00 cycles in 0 25 cycle steps 81D3D Level 4 pickup OFF 40 10 65 00 Hz 81D4P Level 4 time delay 2 00 16000 00 cycles in 0 25 cycle steps 81D4D Level 5 pickup OFF 40 10 65 00 Hz 81D5P Level 5 time delay 2 00 16000 00 cycles in 0 25 cycle steps 81D5D Level 6 pick...

Page 467: ...FF 0 00 16000 00 cycles in 0 25 cycle steps EBLKD Echo time delay pickup OFF 0 00 16000 00 cycles in 0 25 cycle steps ETDPU Echo duration time delay 0 00 16000 00 cycles in 0 25 cycle steps EDURD Weak infeed enable Y N EWFC Additional DCUB Trip Scheme Settings see Figure 5 10 Make the following settings if preceding enable setting ECOMM DCUB1 or DCUB2 Guard present security time delay 0 00 16000 0...

Page 468: ...cycle steps see Figure 5 1 TDURD Close failure time delay OFF 0 00 16000 00 cycles in 0 25 cycle steps see Figure 6 1 CFD Three pole open time delay 0 00 60 00 cycles in 0 25 cycle steps usually set for no more than a cycle see Figure 5 3 3POD Load detection phase pickup OFF 0 05 20 00 A see Figure 5 3 50LP SELOGIC Control Equation Variable Timers see Figures 7 23 and 7 24 Number of timer pickup d...

Page 469: ... 0 16000 00 cycles in 0 25 cycle steps SV12DO SV13 Pickup Time 0 16000 00 cycles in 0 25 cycle steps SV13PU SV13 Dropout Time 0 16000 00 cycles in 0 25 cycle steps SV13DO SV14 Pickup Time 0 16000 00 cycles in 0 25 cycle steps SV14PU SV14 Dropout Time 0 16000 00 cycles in 0 25 cycle steps SV14DO SV15 Pickup Time 0 16000 00 cycles in 0 25 cycle steps SV15PU SV15 Dropout Time 0 16000 00 cycles in 0 2...

Page 470: ...ge 12 of 23 FOR THE SEL 351P RECLOSER CONTROL Date GROUP SETTINGS SERIAL PORT COMMAND SET AND FRONT PANEL Date Code 990215 Restore min trip SEF Y N RPSEF Sequence coordination Y N ESEQ Ground trip precedence Y N PRECED ...

Page 471: ...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 Figures 5 5 5 7 and 5 10 PT1 Loss of guard 1 used for ECOMM DCUB1 or DCUB2 see Figure 5 10 LOG1 Permissive trip 2 used for ECOMM DCUB2 see Figures 5 5 and 5 10 PT2 Loss of guard 2 used for ECOMM DCUB2 see Figure 5 10 LO...

Page 472: ...Def Time Overcurrent Elements NOTE torque control equation settings cannot be set directly to logical 0 Level 1 phase see Figure 3 3 67P1TC Level 2 phase see Figure 3 3 67P2TC Level 3 phase see Figure 3 3 67P3TC Level 4 phase see Figure 3 3 67P4TC Level 1 neutral ground see Figure 3 8 67N1TC Level 2 neutral ground see Figure 3 8 67N2TC Level 3 neutral ground see Figure 3 8 67N3TC Level 4 neutral g...

Page 473: ...uation Variable SV2 SV2 SELOGIC Control Equation Variable SV3 SV3 SELOGIC Control Equation Variable SV4 SV4 SELOGIC Control Equation Variable SV5 SV5 SELOGIC Control Equation Variable SV6 SV6 SELOGIC Control Equation Variable SV7 SV7 SELOGIC Control Equation Variable SV8 SV8 SELOGIC Control Equation Variable SV9 SV9 SELOGIC Control Equation Variable SV10 SV10 SELOGIC Control Equation Variable SV11...

Page 474: ...LED7 Proteção Bloqueada LED7 LED8 Religador Fechado LED8 LED9 Religador Aberto LED9 LED11 Fonte CA LED11 LED12 Bateria Problema LED12 LED13 Linha Viva LED13 LED14 Trip LED14 LED15 Curva Rapida LED15 LED16 Alta Currente LED16 LED17 Relé Freq LED17 LED18 Reset LED18 LED19 Ciclo LED19 LED20 Bloqueado LED20 LED24 N LED24 LED25 SEF LED25 Display Point Equations see Rotating Default Display in Sections ...

Page 475: ...Section 8 FAULT Block synchronism check elements see Figure 3 24 BYSNCH Close bus monitor see Figure 5 3 CLMON Breaker monitor initiation see Figure 8 3 BKMON Enable for zero sequence voltage polarized directional element see Figure 4 6 E32IV Mirrored Bits Transmit Equations only available in firmware versions 1 and greater see Appendix I Channel A transmit bit 1 TMB1A Channel A transmit bit 2 TMB...

Page 476: ...toisolated Input Timers see Figure 7 1 Input IN101 debounce time 0 00 1 00 cycles in 0 25 cycle steps IN101D Input IN102 debounce time 0 00 1 00 cycles in 0 25 cycle steps IN102D Input IN103 debounce time 0 00 1 00 cycles in 0 25 cycle steps IN103D Input IN104 debounce time 0 00 1 00 cycles in 0 25 cycle steps IN104D Input IN105 debounce time 0 00 1 00 cycles in 0 25 cycle steps IN105D Input IN106...

Page 477: ...CLOSE operator control time delay 0 3600 cyc see Figure 1 39 PB8D TRIP operator control time delay 0 3600 cyc see Figure 1 40 PB9D True three phase voltage connected Y N see Figure 4 1 in Section 4 and A B C target LED discussion at end of Section 5 3PVOLT of EZ settings groups enabled 0 6 see SET EZ and SET FZ Commands Change EZ Settings in Section 10 EZGRPS Battery 12 V Power and Wake Up Port Se...

Page 478: ...ommas ELEMENT QUANTITY RECORDED IA IB IC IN Phase and neutral current magnitudes VA VB VC VS Phase and sync voltage magnitudes IG I1 3I2 3V0 V1 V2 Sequence current and voltage magnitudes FREQ Phase frequency MWA MWB MWC MW3 Phase and 3 phase megaWATTs MVARA MVARB MVARC MVAR3 Phase and 3 phase megaVARs PFA PFB PFC PF3 Phase and 3 phase power factor LDPFA LDPFB LDPFC LDPF3 Phase and 3 phase power fa...

Page 479: ...LB2 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 Name 14 characters NLB5 Clear Local Bit LB5 La...

Page 480: ...haracters DP2_0 Display if DP3 logical 1 16 characters DP3_1 Display 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...

Page 481: ...Data Bits 6 7 8 BITS Parity 0 E N Odd Even None PARITY Stop Bits 1 2 STOP Other Port Settings see below Time out 0 30 minutes T_OUT Send Auto Messages to Port Y N AUTO Enable Hardware Handshaking Y N 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 Set AUTO Y to allow aut...

Page 482: ......

Page 483: ...l DNP V3 00 10 8 Serial Port Automatic Messages 10 8 Serial Port Access Levels 10 9 Access Level 0 10 9 Access Level 1 10 10 Access Level E EZ 10 11 Access Level B 10 11 Access Level 2 10 11 Command Summary 10 12 Command Explanations 10 14 Access Level 0 Commands 10 14 ACC EZA BAC and 2AC Commands go to Access Level 1 E B or 2 10 14 Password Requirements and Default Passwords 10 14 Access Level At...

Page 484: ...3 OPE Command Open Breaker 10 44 PUL Command Pulse Output Contact 10 45 Access Level 2 Commands 10 45 CON Command Control Remote Bit 10 45 COP m n Command Copy Setting Group 10 46 LOO Command Loop Back 10 46 PAS Command View Change Passwords 10 46 SET Command Change Settings 10 47 STA C Command Status Clear Command 10 48 VER Command Show version information 10 48 SEL 351P Recloser Control Command ...

Page 485: ...cally VT 100 terminal emulation provides the best display Serial Port Default Settings for all ports Baud Rate 2400 Data Bits 8 Parity N Stop Bits 1 RTS CTS N To change the port settings use the Access Level 2 SET P command see Section 9 Setting the SEL 351P Recloser Control or the front panel SET pushbutton Wake Up Port Default Settings The wake up port on the side panel is used to wake up the SE...

Page 486: ...EL 2020 distributes demodulated IRIG B time code through all of its 16 rear EIA 232 serial ports Demodulated IRIG B time code can also be input into the Serial Port 1 compression connector If demodulated IRIG B time code is input into this connector it should not be input into Serial Port 2 and vice versa Table SECTION 10 1 Pinout Functions for EIA 232 Serial Ports 2 3 and F Pin Port 2 Port 3 Port...

Page 487: ... from SEL These cables don t apply to the wake up port Permanently connected metallic communication cables should be restricted to use inside a substation control house to reduce the hazards of ground potential rise SEL recommends that the metallic cable length be limited to 100 feet or less If your devices require more than 100 feet of cable you should use fiber optic cable and transceivers to pr...

Page 488: ... Cable C222 externally powered modem SEL 351P DCE Device 9 Pin Male 25 Pin Male D Subconnector D Subconnector GND 5 7 GND TXD 3 2 TXD IN RTS 7 20 DTR IN RXD 2 3 RXD OUT CTS 8 8 CD OUT GND 9 1 GND Cable C220 modem powered from Pin 1 5 vdc 1 SEL 351P DCE Device 9 Pin Male 25 Pin Male D Subconnector D Subconnector GND 5 7 GND TXD 3 2 TXD IN RTS 7 20 DTR IN RXD 2 3 RXD OUT CTS 8 8 CD OUT 5 VDC 1 10 PW...

Page 489: ...Subconnector GND 1 5 GND TXD 2 2 RXD RXD 4 3 TXD CTS 5 7 RTS 12 7 8 CTS GND 9 9 GND SEL 351P Recloser Control to SEL 2020 Cable C273A SEL 2020 SEL 351P 9 Pin Male 9 Pin Male D Subconnector D Subconnector RXD 2 3 TXD TXD 3 2 RXD IRIG 4 4 IRIG GND 5 5 GND IRIG 6 6 IRIG RTS 7 8 CTS CTS 8 7 RTS DTE Data Terminal Equipment Computer Terminal Printer etc DCD Data Communications Equipment Modem etc ...

Page 490: ...hardware handshaking use the SET P command or front panel SET pushbutton to set RTSCTS Y Disable hardware handshaking by setting RTSCTS N If RTSCTS N the SEL 351P permanently asserts the RTS line If RTSCTS Y the SEL 351P deasserts RTS when it is unable to receive characters If RTSCTS Y the SEL 351P does not send characters until the CTS input is asserted Software Protocols The SEL 351P provides st...

Page 491: ...GE LINE 1 CRLF MESSAGE LINE 2 CRLF LAST MESSAGE LINE CRLF ETX Each message begins with the start of transmission character ASCII 02 and ends with the end of transmission character ASCII 03 Each line of the message ends with a carriage return and line feed 3 The control implements XON XOFF flow control The serial port transmits XON ASCII hex 11 and asserts the RTS output if hardware hand shaking en...

Page 492: ...y messages to transfer metering and control messages The protocol is described in Appendix D Configuration Fast Meter and Fast Operate Commands There are no settings required to implement or control this protocol It is available on any SEL 351P port that is set for SEL or LMD protocol SEL Compressed ASCII Protocol SEL Compressed ASCII protocol provides compressed versions of some of the recloser c...

Page 493: ...A Command Recloser Control Self Test Status in this section SERIAL PORT ACCESS LEVELS You can issue commands to the SEL 351P via the serial communication ports to view metering values change control settings etc The available serial port commands are listed in Table SECTION 10 5 A summary of commands is also included at the end of this section of the instruction manual The commands can be accessed...

Page 494: ...cess Level B If passwords are enabled you must enter passwords to reach these other access levels The EZA EZAccess command allows the control to go to Access Level E see ACC EZA BAC and 2AC Commands Go to Access Level 1 EZ B or 2 in the Command Explanations subsection for more detail Enter the EZA command at the Access Level 1 prompt EZA ENTER The 2AC command allows the control to go to Access Lev...

Page 495: ...le SECTION 10 5 are available from Access Level B Access Level B is intended to allow operators to perform control functions without being able to change settings For example enter the CLO command at the Access Level B prompt to close the recloser CLO ENTER While you are in Access Level B any of the Access Level 1 and Access Level E commands are also available commands 2AC through SET FZ in Table ...

Page 496: ...pen and close the recloser operate output contacts or change the active setting group The Access Level 2 commands primarily allow the user to change control settings and logic Again a higher access level can access the serial port commands in a lower access level The commands are shown in upper case letters but you can also enter them with lower case letters Table SECTION 10 5 Serial Port Command ...

Page 497: ...reaker recloser TRIP B PUL Pulse output contact CNTRL 2 CON Control remote bit 2 COP Copy setting group 2 LOO MIRRORED BITS loopback 2 PAS View change passwords SET 2 SET Change group settings SET 2 SET L Change logic settings 2 SET G Change global settings SET 2 SET R Change sequence of event triggering settings 2 SET P Change serial port settings SET 2 SET T Change text label settings 2 STA C Cl...

Page 498: ...and Explanations subsection are in the same order as the commands listed in Table SECTION 10 5 COMMAND EXPLANATIONS Access Level 0 Commands ACC EZA BAC and 2AC Commands go to Access Level 1 E B or 2 The ACC EZA BAC and 2AC commands provide entry to the multiple access levels Different commands are available at the different access levels as shown in Table SECTION 10 5 Commands ACC EZA BAC and 2AC ...

Page 499: ...ssword OTTER Enter the default password Password OTTER ENTER The control responds RECLOSER R1 Date 03 05 97 Time 08 31 10 361 FEEDER 2101 Level 1 The prompt indicates the control is now in Access Level 1 If the entered password is incorrect the control asks for the password again Password The control will ask up to three times If the requested password is incorrectly entered three times the contro...

Page 500: ...essful Level E Level B or Level 2 access If access is denied the ALARM contact also pulses for one second Passwords are not required to go from Level E Level B or Level 2 to Level 1 Passwords are also not required to go from Level 2 or Level B to Level E or Level 1 Access Level 1 Commands BRE A Command Breaker Monitor Data Use the BRE command to view the breaker recloser contact wear monitor repor...

Page 501: ... error 0 Framing error 0 Loopback 0 If only one MIRRORED BITS port is enabled the channel specifier may be omitted Use the L parameter to get a summary report followed by a listing of the COMM records COMM L ENTER FEEDER 1 Date 02 20 98 Time 18 37 36 125 STATION A FID SEL 351P R100 V0 D990213 CID C867 BCBFID R103 Summary for Mirrored Bits channel A For 02 05 98 17 18 12 993 to 02 20 98 18 37 36 12...

Page 502: ...yping N ENTER aborts the clearing operation with the message Canceled If both MIRRORED BITS channels are enabled omitting the channel specifier in the clear command will cause both channels to be cleared DAT Command View Change Date DAT displays the date stored by the internal calendar clock If the date format setting DATE_F is set to MDY the date is displayed as month day year If the date format ...

Page 503: ...ime the event was triggered the type of event the fault location the maximum phase current in the event the power system frequency the number of the active setting group the reclose shot count and the front panel targets To display the recloser control event summaries enter the following command HIS ENTER RECLOSER R1 Date 02 01 97 Time 08 40 16 740 FEEDER 2101 DATE TIME EVENT LOCAT CURR FREQ GRP S...

Page 504: ...rt generated by assertion of SELOGIC Control Equation event report trigger condition setting ER PULSE event report generated by execution of the PUL Pulse command TRIG event report generated by execution of the TRI Trigger command The TARGETS column displays the front panel LED status during the event in binary format The top row of LEDs are shown first and the bottom row of LEDs are shown next un...

Page 505: ... B You can use the IRI command to determine if the SEL 351P is properly reading the IRIG B signal LDP Command Load Profile Report Use the LDP command to view the Load Profile Report For more information on Load Profile Reports see Section 8 Breaker Recloser Monitor Battery System Monitor Metering and Load Profile Functions MET Command Metering Data The MET commands provide access to the control me...

Page 506: ...hase power factor leading or lagging Sequence I1 3I2 3I0 Positive negative and zero sequence currents A primary V1 V2 Positive and negative sequence voltages kV primary 3V0 Zero sequence voltage kV primary wye connected voltage inputs only Frequency FREQ Hz Instantaneous power system frequency measured on voltage channel VA The angles are referenced to the A phase voltage if it is greater than 13 ...

Page 507: ... 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 MET D Demand Metering The MET D command displays the demand and peak demand values of the following quantities Currents IA B C N Input currents A primary IG Residual ground current A primary IG 3I0 IA IB IC 3I2 Negative sequence current A primary Power MWA B C Single phase megawatts wye connected voltage i...

Page 508: ...P command For more information on demand metering see Demand Metering in Section 8 Breaker Recloser Monitor Battery System Monitor Metering and Load Profile Functions MET E Energy Metering The MET E command displays the following quantities Energy MWhA B C Single phase megawatt hours in and out wye connected voltage inputs only MWh3P Three phase megawatt hours in and out MVARhA B C Single phase me...

Page 509: ... IA A 196 8 02 01 97 15 00 42 574 30 0 02 01 97 14 51 02 391 IB A 195 0 02 01 97 15 05 19 558 31 8 02 01 97 14 50 55 536 IC A 200 4 02 01 97 15 00 42 578 52 2 02 01 97 14 51 02 332 IN A 42 6 02 01 97 14 51 02 328 42 6 02 01 97 14 51 02 328 IG A 42 0 02 01 97 14 50 55 294 42 0 02 01 97 14 50 55 294 VA kV 11 7 02 01 97 15 01 01 576 3 4 02 01 97 15 00 42 545 VB kV 11 7 02 01 97 15 00 42 937 2 4 02 01...

Page 510: ... Equations settings serial port settings sequential events recorder SER settings and text label settings Below are the SHO command options SHO n Show regular settings for settings group n n specifies the settings group 1 2 3 4 5 or 6 n defaults to the active settings group if not listed SHO EZ n Show EZ recloser control settings for settings group n n specifies the settings group 1 2 3 4 5 or 6 n ...

Page 511: ...ing Group 1 control settings starting with setting E50P The default is the first setting The SHO commands display only the enabled settings To display all settings including disabled hidden settings append an A to the SHO command e g SHO 1 A Below are sample SHOWSET commands for the SEL 351P showing all the factory default settings Settings groups 1 through 6 have the same settings for SHO n SHO E...

Page 512: ... 51P2CT 0 00 51P2MR 0 00 51N1P OFF 51N1C 1 51N1TD 1 00 51N1CT 0 00 51N1MR 0 00 51N2P OFF 51N2C 13 51N2TD 1 00 51N2CT 0 00 51N2MR 0 00 51G1P 0 25 51G1C 1 51G1TD 1 00 51G1CT 0 00 51G1MR 0 00 51G2P 0 25 51G2C 13 51G2TD 1 00 51G2CT 0 00 51G2MR 0 00 27P1P OFF 27P2P OFF 59P1P 104 0 59P2P OFF 59N1P OFF 59N2P OFF 59QP OFF 59V1P OFF 27SP OFF 59S1P OFF 59S2P OFF 27PP OFF 59PP OFF Press RETURN to continue 27...

Page 513: ... C1 C5 recloser or user curve C Delay curve ground OFF U1 U5 C1 C5 recloser or user curve 13 Operations phase fast curve OFF 1 5 2 Operations ground fast curve OFF 1 5 2 Operations to lockout phase OFF 2 5 4 Operations to lockout ground OFF 2 5 4 Reclose interval 1 0 999999 00 cycles 300 00 Reclose interval 2 0 999999 00 cycles 600 00 Reclose interval 3 0 999999 00 cycles 600 00 Press RETURN to co...

Page 514: ...0 00 NFREQ 60 PHROT ABC DATE_F MDY FP_TO 15 LER 15 PRE 4 IN101D 0 50 IN102D 0 50 IN103D 0 50 IN104D 0 50 IN105D 0 50 IN106D 0 50 EBMON Y COSP1 30000 COSP2 10000 COSP3 100 KASP1 0 27 KASP2 0 50 KASP3 6 00 LED11L N LED12L N LED13L N LED14L Y LED15L Y LED16L Y LED17L Y LED18L N LED19L N LED20L N LED24L Y LED25L Y RSTLED Y PB8D 0 00 PB9D 0 00 3PVOLT N EZGRPS 2 AMPHR 8 0 SLPCAP 20 ON12V N ABAUD 2400 CH...

Page 515: ...T3 PB3 LT3 LT4 RST3 PB3 LT3 LT4 SET4 PB5 LT4 RST4 PB5 LT4 SET5 PB6 LT5 LT4 RST5 PB6 LT5 LT4 SET6 PB7 LT6 LT4 RST6 PB7 LT6 LT4 SET7 1 RST7 0 Press RETURN to continue SET8 0 RST8 0 67P1TC HLP 67P2TC HTP 67P3TC 1 67P4TC 1 67N1TC HLG LT1 67N2TC HTG LT1 67N3TC LT5 51P1 51P2 51G1 51G2 51N1 51N2 SV12 SV12 50G5 SV12 50N5 67N4TC 1 67G1TC HLG LT1 67G2TC HTG LT1 67G3TC 1 67G4TC 1 67Q1TC 1 67Q2TC 1 67Q3TC 1 6...

Page 516: ... 50N6 51N1 51N2 SV15 SV13 OLG GTP SV14 OLG GTP SV14 50P6 OLP GTP 50P6 OLP GTP 50P6 SV14 SV16 SV15 SV13 OLP OLG OUT101 0 OUT102 0 OUT103 0 OUT104 0 OUT105 0 OUT106 0 OUT107 0 LED1 LT1 LED2 LT2 LED3 0 LED4 SG1 LED5 LT4 LED6 LT5 LED7 0 Press RETURN to continue LED8 52A LED9 52A LED11 59A1 LED12 NOBATT BCBOK DTFAIL LED13 LT7 LED14 TRIP LED15 51P1T 51G1T 51N1T LED16 67P2T 67G2T 67N2T LED17 81D1T LED18 ...

Page 517: ...TMB5A 0 TMB6A 0 TMB7A 0 TMB8A 0 TMB1B 0 TMB2B 0 TMB3B 0 TMB4B 0 TMB5B 0 TMB6B 0 TMB7B 0 TMB8B 0 SHO P ENTER Port 3 PROTO SEL SPEED 2400 BITS 8 PARITY N STOP 1 T_OUT 15 AUTO N RTSCTS N FASTOP N SHO R ENTER Sequential Events Recorder trigger lists SER1 TRIP 51P1T 51P2T 51G1T 51G2T 51N1T 51N2T 67P2T 67G2T 67N2T 67N3T 81D1T PB9 67P1 67G1 67N1 SER2 CLOSE 52A CF 79CY 79LO 79RS SH0 SH1 SH2 SH3 SH4 PB8 59...

Page 518: ... view a status report enter the command STA n ENTER where n is an optional parameter to specify the number of times 1 32767 to repeat the status display If n is not specified the status report is displayed once A typical SEL 351P status report output appears as shown below STA ENTER RECLOSER R1 Date 02 01 98 Time 12 21 48 226 FEEDER 2101 FID SEL 351P R100 V0 D990213 CID C867 BCBFID R103 SELF TESTS...

Page 519: ... SF6 gas pressure in atmospheres BATT Displays status and mode of the battery charger board MODE Mode that battery charger is in CHARGE Battery is charged to 90 or more charging at low charge rate HICHRG Battery is charged to less than 90 charging at high charge rate DISCHG Battery is discharging but is charged to greater than SLPCAP setting DISTST Battery discharge test at 1 Amp for 6 seconds dur...

Page 520: ...ontrol Equations The TAR command does not remap the front panel target LEDs as is done in some previous SEL relays But the execution of the equivalent TAR command via the front panel display does remap the bottom row of the front panel target LEDs see OTHER pushbutton in the Pushbutton Primary Functions subsection in the Front Panel Interface section of the SEL 351P Quick Start Installation and Us...

Page 521: ...50GF 50GR 32VE 32QGE 32NE 32QE TAR 16 F32P R32P F32Q R32Q F32QG R32QG F32V R32V TAR 17 F32N R32N 32PF 32PR 32QF 32QR 32GF 32GR TAR 18 27A1 27B1 27C1 27A2 27B2 27C2 59A1 59B1 TAR 19 59C1 59A2 59B2 59C2 27AB 27BC 27CA 59AB TAR 20 59BC 59CA 59N1 59N2 59Q 59V1 27S 59S1 TAR 21 59S2 59VP 59VS SF 25A1 25A2 3P27 3P59 TAR 22 81D1 81D2 81D3 81D4 81D5 81D6 27B81 50L TAR 23 81D1T 81D2T 81D3T 81D4T 81D5T 81D6T...

Page 522: ... firmware versions 1 or greater Command TAR SH1 10 is executed in the following example TAR SH1 10 ENTER 79RS 79CY 79LO SH0 SH1 SH2 SH3 SH4 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 79RS 79CY 79LO SH0 SH1 SH2 SH3 SH4 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 Note that Relay Word row containing the SH1 bit is repeated 10 ti...

Page 523: ...ands Access Level E commands primarily allow you to test the battery and set EZ settings and global EZ settings All Access Level 1 commands can also be executed from Access Level E The screen prompt is BTT Command Battery Test You can use the BTT command to view the results of the last battery discharge test and the time remaining until the next automatic battery discharge test or you can force an...

Page 524: ...T NOW command is entered the control forces an immediate battery test and shows the status of the battery test BTT NOW ENTER Battery test initiated Duration 5 seconds Battery test state is OK Each period is displayed at about one second intervals as the control times through the rest See the Battery System Monitor subsection in Section 8 Breaker Recloser Monitor Battery System Monitor Metering and...

Page 525: ...ettings in settings groups 3 through 6 are overridden The SET FZ command allows you to change the EZ global settings The EZ global settings also override a number of the regular global settings set with the SET G command in Access Level 2 if global setting EZGRPS 0 see end of Table 1 1 Access Level B Commands Access Level B commands primarily allow you to operate control parameters and output cont...

Page 526: ...LOSER R1 Date 02 03 99 Time 08 44 20 802 FEEDER 2101 Ctrl Trips 16 IA 40 7 IB 41 4 IC 53 8 kA Ext Trips 3 IA 0 8 IB 0 9 IC 1 1 kA Percent wear A 8 B 7 C 10 A phase Trips 14 B phase Trips 9 C phase Trips 10 EF G Trips 12 SEF Trips 0 LAST RESET 12 27 98 15 32 59 Reset Trip Counters and Accumulated Currents Wear Are you sure Y N Y ENTER RECLOSER R1 Date 02 03 99 Time 08 44 33 920 FEEDER 2101 Cntrl Tr...

Page 527: ... its recommended use To issue the CLO command enter the following CLO ENTER Close Breaker Y N Y ENTER Are you sure Y N Y ENTER Typing N ENTER after either of the above prompts will abort the command The CLO command is supervised by the main board Breaker jumper see Table 2 4 and Table 2 5 If the Breaker jumper is not in place Breaker jumper OFF the control does not execute the CLO command and resp...

Page 528: ...ultiple Setting Groups in Section 7 Inputs Outputs Timers and Other Control Logic OPE Command Open Breaker The OPE OPEN command asserts Relay Word bit OC for 1 4 cycle when it is executed You can program Relay Word bit OC into the TR Trip conditions SELOGIC Control Equation see Figure 1 19 to assert the TRIP Relay Word bit and in turn to assert an output RCTR TRIP see Figure 7 29 to trip a reclose...

Page 529: ...nds Aborted No Breaker Jumper The control generates an event report if any of the OUT101 through OUT107 contacts are pulsed The PULSE command is primarily used for testing purposes Access Level 2 Commands Access Level 2 commands allow unlimited access to recloser control settings parameters and output contacts All Access Level 1 Access Level E EZ and Access Level B commands are available from Acce...

Page 530: ...he SET and SET L commands copy them to the other groups with the COP command Use the SET SET EZ and SET L commands to modify the copied settings The ALARM output pulses if you copy settings into the active group For example to copy settings from Group 1 to Group 3 issue the following command COP 1 3 ENTER Copy 1 to 3 Are you sure Y N Y ENTER Please wait Settings copied LOO Command Loop Back The LO...

Page 531: ... you wish 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 disables password protection for Level 1 SET Command Change Settings Use the SET command to change regular settings EZ recloser control settings global settings SELOGIC Control Equations settings serial port se...

Page 532: ...closer control latches all mainboard self test warnings and failures in order to capture transient out of tolerance conditions To reset the self test status use the STA C command STA C ENTER The control responds Reboot the relay and clear status Are you sure Y N If you select N or n the control displays Canceled and aborts the command If you select Y the control displays Rebooting the relay The co...

Page 533: ...ers Wye and that the power supply is an Integral Battery Charger system The third line shows the nominal current of the phase currents and the neutral current channel Line four shows the serial communications protocol Standard or DNP The fifth line shows any other installed options available The sixth line shows the status of the SELBOOT bootstrap program A typical VER command response is shown be...

Page 534: ......

Page 535: ...nel p COM p m n Show a communications summary report for events n through m on MIRRORED BITS channel p COM p d1 Show a communications summary report for events occurring on date d1 on MIRRORED BITS channel p COM p n Show a communications summary for events occurring between dates d1 and d2 on MIRRORED BITS channel p Entry of dates is dependent on the Date Format setting DATE_F MDY or YMD DAT Show ...

Page 536: ...Z Show EZ global settings SHO G Show global settings SHO L n Show SELOGIC Control Equation settings for settings group n n 1 6 SHO P n Show port settings for port n n 1 2 3 F SHO R Show Sequential Events Recorder SER settings SHO T Show text label settings for front panel display points and extra local control STA Show recloser control self test status TAR R Reset the front panel tripping targets ...

Page 537: ...hen 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 settings and logic equations from settings group m to settings group n LOO Set MIRRORED BITS port to loopback PAS Show existing Access Level 1 E EZ B and 2 passwords PAS 1 xxxxxx Change Access Level 1 password to xxxxxx PAS E xxx...

Page 538: ...on with factory settings 11 2 Extra Local Control 11 3 View Extra Local Control with factory settings 11 4 Operate Extra Local Control example settings 11 5 Local Control State Retained When Relay Deenergized 11 6 Rotating Default Display 11 7 Additional Rotating Default Display Example 11 9 FIGURES Figure 11 1 Local Control Switch Configured as an ON OFF Switch 11 3 Figure 11 2 Local Control Swit...

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Page 540: ...trol pushbuttons on the bottom half of the SEL 351P front panel Reclosing Relay Shot Counter Screen Use this screen to 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 BTT DATE TIME 79 TAR BRK_MON Scroll down with the down arrow button and select function 79 Upon selecting fun...

Page 541: ...elay is locked out after a reclose sequence LOCKOUT LED on front panel is illuminated RECLOSE COUNT 3 SEL 351P Recloser Control Shot Counter Screen Operation with factory settings With the recloser closed and the SEL 351P Recloser Control in the reset state front panel RESET LED illuminated the shot counter screen appears as SET RECLOSURES 3 RECLOSE COUNT 0 The SEL 351P trips the recloser open and...

Page 542: ...shot counter screen appears as SET RECLOSURES 3 RECLOSE COUNT 0 Extra Local Control Use extra 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 through LB8 These local bits are available as Relay Word bits and are used in SELOGIC Control Equ...

Page 543: ...unications and Commands See Local Control Switches in Section 7 Inputs Outputs Timers and Other Control Logic for more information on local control View Extra Local Control with factory settings Access extra local control via the CNTRL pushbutton If local control switches exist i e corresponding switch position label settings were made the following message displays with the rotating default displ...

Page 544: ... and scroll back to the first set local control switch in the example settings MANUAL TRIP Position RETURN Press the SELECT pushbutton and the operate option for the displayed local control switch displays MANUAL TRIP TRIP Yes No Scroll left with the left arrow button and then select Yes The display then shows the new local control switch position MANUAL TRIP Position TRIP Because this is an OFF M...

Page 545: ...relay is turned off the local bit states are retained For example suppose the local control switch with local bit output LB1 is configured as an ON OFF type switch see Figure SECTION 11 1 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 an...

Page 546: ...his section and Local Control Switches in Section 7 Inputs Outputs Timers and Other Control Logic for more information on local control Press CNTRL for Extra Control WHIPP BOURNE SWITCHGEAR 1 PANACEA CONTROLE DO RELIGADOR DWG MP351P006 IA 50 IB 50 IC 50 IN 0 SERIAL F PORTA If display point labels e g 79 DISABLED and BREAKER OPEN are enabled for display they also enter into the 2 seconds per screen...

Page 547: ...ISABLED DP4_1 BREAKER CLOSED DP4_0 BREAKER OPEN WHIPP BOURNE SWITCHGEAR 1 PANACEA CONTROLE DO RELIGADOR DWG MP351P008 IA 50 IB 50 IC 50 IN 0 79 DISABLED BREAKER OPEN Press CNTRL for Extra Control SERIAL F PORTA DP2 LB1 DP4 IN101 logical 1 logical 0 DP2_1 79 ENABLED DP2_0 79 DISABLED DP4_1 BREAKER CLOSED DP4_0 BREAKER OPEN WHIPP BOURNE SWITCHGEAR 1 PANACEA CONTROLE DO RELIGADOR DWG MP351P009 IA 50 ...

Page 548: ...al display points and corresponding display point labels are set the additional enabled display point labels join the 2 seconds per screen rotation on the front panel display Display point label settings are set with the SET T command or viewed with the SHO T command via the serial port see Section 9 Setting the SEL 351P Recloser Control and SHO Command Show View Settings in Section 10 Serial Port...

Page 549: ......

Page 550: ...s 12 7 Current Voltage and Frequency Columns 12 8 Output Input Protection and Control Columns 12 8 Sequential Events Recorder SER Report 12 22 SER Triggering 12 22 Making SER Trigger Settings 12 23 Retrieving SER Reports 12 23 Clearing SER Report 12 25 Example Standard 15 Cycle Event Report 12 26 Example Sequential Events Recorder SER Report 12 33 TABLES Table 12 1 Event Types 12 4 Table 12 2 Stan...

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Page 552: ... information each time a programmed condition changes state The control stores the latest 512 lines of the SER report in nonvolatile memory If the report fills up newer rows overwrite the oldest rows in the report See Figure SECTION 12 5 for an example SER report STANDARD 15 30 CYCLE EVENT REPORTS See Figure SECTION 12 2 for an example event report Note Figure SECTION 12 2 is on multiple pages Eve...

Page 553: ... function that is turned off in the factory default settings PB9 is the front panel control TRIP pushbutton and OC is the serial port OPEN Command output Because the TRIP function automatically triggers an event report these conditions do not have to be entered in SELOGIC Control Equation Event Report trigger setting ER The TRIP Relay Word bit output of the trip logic in Figure 5 1 propagates to t...

Page 554: ...UT101 through OUT107 asserts via the PUL command the control automatically triggers a standard event report The PUL command is available through serial port communication and the relay front panel CNTRL pushbutton See Section 10 Serial Port Communications and Commands and the Pushbutton Primary Functions subsection CNTRL pushbutton in the Front Panel Interface section of the SEL 351P Quick Start I...

Page 555: ...le event types and their descriptions are shown in the table below Note the correspondence to the preceding event report triggering conditions see Standard Event Report Triggering in this section Table SECTION 12 1 Event Types Event Type Description AG BG CG Single phase to ground faults Appends T if TRIP asserted ABC Three phase faults Appends T if TRIP asserted AB BC CA Phase to phase faults App...

Page 556: ...nformation on the line parameter settings Targets The control reports the targets at the rising edge of TRIP The targets are displayed in binary format See Front Panel Status and Trip Target LEDs in Section 1 Factory Set Logic Currents The Currents A pri ABCNGQ field shows the currents present in the event report row containing the maximum phase current The listed currents are Phase A channel IA B...

Page 557: ...t report C Display the report in Compressed ASCII format for use by the SEL 5601 Analytic Assistant Below are example EVE commands Serial Port Command Description EVE Display the most recent event report at 1 4 cycle resolution EVE 2 Display the second event report at 1 4 cycle resolution EVE S16 L10 Display 10 cycles of the most recent report at 1 16 cycle resolution EVE C 2 Display the second re...

Page 558: ...nt reports to observe Power system harmonics on channels IA IB IC IG VA VB VC VS Decaying dc offset during fault conditions on IA IB IC Optoisolated input contact bounce on channels IN101 through IN106 The filters for ac current and voltage are fixed You can adjust the optoisolated input debounce via debounce settings see Figure 7 1 in Section 7 Inputs Outputs Timers and Other Control Logic Raw ev...

Page 559: ...primary kV wye connected VS Voltage measured by channel VS primary kV Freq Frequency of voltage channel VA Hz Note that the ac values change from plus to minus values in Figure SECTION 12 2 indicating the sinusoidal nature of the waveforms Other figures help explain the information available in the event report current columns Figure SECTION 12 3 shows how event report current column data relates ...

Page 560: ...t 56 OUT105 OUT106 5 Output contact OUT105 asserted 6 Output contact OUT106 asserted b Both OUT105 and OUT106 asserted Out 7A OUT107 ALARM 7 Output contact OUT107 asserted A Output contact ALARM asserted b Both OUT107 and ALARM asserted Out TC WBTR WBCL see Figure 7 29 T Trip output contact WBTR asserted C Close output contact WBCL asserted b Both WBTR and WBCL asserted Out Br WBBRK see Figure 7 2...

Page 561: ...vent Report 51P1 51P2 51P1 51P1T 51P1R 51P2 51P2T 51P2R Time overcurrent element reset 51_R 51N1 51N2 51N1 51N1T 51N1R 51N2 51N2T 51N2R p Time overcurrent element picked up and timing 51_ 51G1 51G2 51G1 51G1T 51G1R 51G2 51G2T 51G2R T Time overcurrent element timed out 51_T 51 Q 51Q 51QT 51QR r Time overcurrent element timing to reset 1 Time overcurrent element timing to reset after having timed ou...

Page 562: ...icked up c 50BC_ and 50CA_ picked up 3 50AB_ 50BC_ and 50CA_ picked up 32 PQ F32P P Forward phase directional element F32P picked up R32P p Reverse phase directional element R32P picked up F32Q Q Forward negative sequence directional element F32Q picked up R32Q q Reverse negative sequence directional element R32Q picked up 32 NG F32QG Q Forward negative sequence directional element F32QG picked up...

Page 563: ... PDEM QDEM P Phase demand ammeter element PDEM picked up Q Negative sequence demand ammeter element QDEM picked up b Both PDEM and QDEM picked up DM NG NDEM GDEM N Neutral ground demand ammeter element NDEM picked up G Residual ground demand ammeter element GDEM picked up b Both NDEM and GDEM picked up 27 P 27A1 27A2 27B1 27B2 27C1 27C2 A A phase instantaneous undervoltage element 27A1 or 27A2 pic...

Page 564: ... and 27CA elements picked up b 27AB and 27BC elements picked up c 27BC and 27CA elements picked up 3 27AB 27BC and 27CA elements picked up 27 S 27S Channel VS instantaneous undervoltage element 27S picked up 59 P 59A1 59A2 59B1 59B2 59C1 59C2 A A phase instantaneous overvoltage element 59A1 or 59A2 picked up B B phase instantaneous overvoltage element 59B1 or 59B2 picked up C C phase instantaneous...

Page 565: ...ements picked up c 59BC and 59CA elements picked up 3 59AB 59BC and 59CA elements picked up 59 V1Q 59V1 59Q 1 Positive sequence instantaneous overvoltage element 59V1 picked up Q Negative sequence instantaneous overvoltage element 59Q picked up b Both 59V1 and 59Q picked up 59 N 59N1 59N2 1 First ground instantaneous overvoltage element 59N1 picked up 2 Second ground instantaneous overvoltage elem...

Page 566: ...ronism check 25 A 25A1 25A2 1 First synchronism check element 25A1 element picked up 2 Second synchronism check element 25A2 element picked up b Both 25A1 and 25A2 picked up 81 27B 27B81 Frequency logic instantaneous undervoltage element 27B81 picked up 81 12 81D1 81D2 1 Frequency element 81D1 picked up 2 Frequency element 81D2 picked up b Both 81D1 and 81D2 picked up 81 34 81D3 81D4 3 Frequency e...

Page 567: ...s timing r Recloser reset interval timer is timing Shot SH0 SH1 SH2 Reclosing function disabled SH3 SH4 0 shot 0 SH0 1 shot 1 SH1 2 shot 2 SH2 3 shot 3 SH3 4 shot 4 SH4 Zld ZLIN ZLOUT i Load encroachment load in element ZLIN picked up o Load encroachment load out element ZLOUT picked up LOP LOP Loss of potential element LOP picked up Lcl 12 LB1 LB2 1 Local bit LB1 asserted 2 Local bit LB2 asserted...

Page 568: ...te bit RB6 asserted b Both RB5 and RB6 asserted Rem 78 RB7 RB8 7 Remote bit RB7 asserted 8 Remote bit RB8 asserted b Both RB7 and RB8 asserted Rem OC OC CC o OPE Open command executed c CLO Close command executed Ltch 12 LT1 LT2 1 Latch bit LT1 asserted 2 Latch bit LT2 asserted b Both LT1 and LT2 asserted Ltch 34 LT3 LT4 3 Latch bit LT3 asserted 4 Latch bit LT4 asserted b Both LT3 and LT4 asserted...

Page 569: ... timer timed out on pickup time timer output SV_T asserted SELOGIC Control Equation variable timer input SV_ not asserted timer previously timed out on pickup time timer output SV_T remains asserted while timer timing on dropout time 3PO 3PO Three Pole Open element asserted used in Switch Onto Fault logic SOTF SOTFE Switch Onto Fault Enabled element asserted PT PT Permissive Trip received POTT log...

Page 570: ...ed NSTR NSTR Nondirectional carrier STarT element asserted STOP STOP STOP carrier element asserted BTX BTX Block Trip eXtension element asserted TMB A 12 TMB1A TMB2A 1 Transmit Mirrored Bit 1 channel A asserted and Transmit Mirrored Bit 2 channel A deasserted 2 Transmit Mirrored Bit 1 channel A deasserted and Transmit Mirrored Bit 2 channel A asserted b Transmit Mirrored Bit 1 channel A asserted a...

Page 571: ...ansmit Mirrored Bit 7 channel A deasserted and Transmit Mirrored Bit 8 channel A asserted b Transmit Mirrored Bit 7 channel A asserted and Transmit Mirrored Bit 8 channel A asserted RMB A 12 RMB1A RMB2A 1 Receive Mirrored Bit 1 channel A asserted and Receive Mirrored Bit 2 channel A deasserted 2 Receive Mirrored Bit 1 channel A deasserted and Receive Mirrored Bit 2 channel A asserted b Receive Mir...

Page 572: ...Mirrored Bit 7 channel A asserted and Receive Mirrored Bit 8 channel A asserted ROK ROKA ROKB A Receive channel A OK element asserted and Receive channel B OK element deasserted B Receive channel A OK element deasserted and Receive channel B OK element asserted b Receive channel A OK element asserted and Receive channel B OK element asserted RBAD RBADA RBADB A Receive channel A BAD for certain tim...

Page 573: ...an be A or B type contacts see Table 2 1 and Figure 7 26 SEQUENTIAL EVENTS RECORDER SER REPORT See Figure SECTION 12 5 for an example SER report SER Triggering The control triggers generates an entry in the SER report for a change of state of any one of the elements listed in the SER1 SER2 and SER3 trigger settings The factory default settings are SER1 TRIP 51P1T 51P2T 51G1T 51G2T 51N1T 51N2T 67P2...

Page 574: ...es See the SET R command in Table 9 1 and corresponding Settings Sheet 20 of 23 at the end of Section 9 Setting the SEL 351P Recloser Control Use either spaces or commas to delimit the elements For example if you enter setting SER1 as SER1 51P1T 51G1T 51P2T 51G2T 50P1 50P2 The relay displays the setting as SER1 51P1T 51G1T 51P2T 51G2T 50P1 50P2 The control can monitor up to 72 elements in the SER ...

Page 575: ...inning top of the report and the newest row at the end bottom of the report for the given date Chronological progression through the report is down the page and in descending row number SER 2 17 98 3 23 98 If you enter the SER command followed by two dates date 2 17 98 chronologically precedes date 3 23 98 in this example all the rows between and including dates 2 17 98 and 3 23 98 are displayed i...

Page 576: ...nd SER 12 25 SEL 351P Manual Técnico Clearing SER Report Clear the SER report from nonvolatile memory with the Access Level 2 command SER C as shown in the following example SER C ENTER Clear the SER Are you sure Y N Y ENTER Clearing Complete ...

Page 577: ...0 V0 D990213 CID C867 BCBFID R103 Out In 55CS Currents Amps Pri Voltages kV Pri 1357TB 135 22hF IA IB IC IG VA VB VC VS Freq 246ACr 246 ABg6 1 120 152 29 3 3 3 6 7 3 4 0 0 60 01 b 104 53 158 1 5 9 0 1 5 8 0 0 60 01 b 122 150 30 2 3 3 6 7 3 4 0 0 60 01 b 105 55 157 3 5 9 0 1 5 8 0 0 60 01 b 2 121 151 29 1 3 3 6 7 3 4 0 0 60 01 b 104 54 158 0 5 9 0 1 5 8 0 0 60 01 b 122 151 30 1 3 3 6 7 3 4 0 0 60 0...

Page 578: ...1 1 0 2 5 8 0 0 5 8 0 0 60 01 b 12 1 1 1 3 3 4 6 7 3 3 0 0 60 01 b 0 0 0 0 5 8 0 0 5 8 0 0 60 01 b 1 0 1 2 3 4 6 7 3 3 0 0 60 01 b 1 1 0 2 5 8 0 0 5 8 0 0 60 01 b 13 0 1 0 1 3 4 6 7 3 3 0 0 60 01 b 0 0 1 1 5 8 0 0 5 8 0 0 60 01 b 0 0 1 1 3 4 6 7 3 3 0 0 60 01 b 0 1 0 1 5 8 0 0 5 8 0 0 60 01 b 14 1 1 1 3 3 4 6 7 3 3 0 0 60 01 b 0 0 0 0 5 8 0 0 5 8 0 0 60 01 b 0 0 0 0 3 4 6 7 3 3 0 0 60 01 b 1 1 1 3...

Page 579: ...T Tp Tp C 0 b 7 TT Tp Tp C 0 b 7 TT 7 Tp Tp C 0 b 7 TT Tp Tp C 0 b 7 TT Tp Tp C 0 b 7 TT Tp Tp C 0 b 7 TT 8 1r Tp C 0 b 7 TT 1r 1r C 0 b 7 T 1r 1r C 0 b 7 T 1r 1r C 0 b 7 T 1r C 0 b 7 T C 0 b 7 C 0 b 7 C 0 b 7 10 C 0 b 7 C 0 b 7 C 0 b 7 C 0 b 7 11 C 0 b 7 C 0 b 7 C 0 b 7 C 0 b 7 12 C 0 b 7 C 0 b 7 C 0 b 7 C 0 b 7 13 C 0 b 7 C 0 b 7 C 0 b 7 C 0 b 7 14 C 0 b 7 C 0 b 7 C 0 b 7 C 0 b 7 15 C 0 b 7 C 0 ...

Page 580: ...9 SEL 351P Manual Técnico Communication Elements S PZ EE ZDNS TMB RMB TMB RMB RRC 3O T3KKCWU 3SSTB A A B B OBB PPPPPPPPP PT PRREETFB XTTOT 1357 1357 1357 1357 KAA BBBBBBBBB OF TXBYYTCB TRRPX 2468 2468 2468 2468 DD 123456789 1 2 3 4 5 6 7 8 9 10 11 12 13 ...

Page 581: ...ION 12 2 Example Standard 15 Cycle Event Report 1 4 Cycle Resolution Figure SECTION 12 3 and Figure SECTION 12 4 look in detail at 1 cycle of A phase current channel IA identified in Figure SECTION 12 2 Figure SECTION 12 3 shows how the event report ac current column data relates to the actual sampled waveform and RMS values Figure SECTION 12 4 shows how the event report current column data can be...

Page 582: ...igure SECTION 12 3 Derivation of Event Report Current Values and RMS Current Values From Sampled Current Waveform In Figure SECTION 12 3 note that any two rows of current data from the event report in Figure SECTION 12 2 1 4 cycle apart can be used to calculate RMS current values ...

Page 583: ...sor RMS Current Values From Event Report Current Values In Figure SECTION 12 4 note that two rows of current data from the event report in Figure SECTION 12 2 1 4 cycle apart can be used to calculate phasor RMS current values In Figure SECTION 12 4 at the present sample the phasor RMS current value is IA 991 A 33 7 ...

Page 584: ...16 06 01 98 12 23 36 975 SH3 Deasserted 15 06 01 98 12 23 36 975 SH0 Asserted 14 06 01 98 12 23 52 527 51G1T Asserted 13 06 01 98 12 23 52 527 79CY Asserted 12 06 01 98 12 23 52 527 79RS Deasserted 11 06 01 98 12 23 52 527 TRIP Asserted 10 06 01 98 12 23 52 535 51P1T Asserted 9 06 01 98 12 23 52 581 52A Deasserted 8 06 01 98 12 23 52 598 51P1T Deasserted 7 06 01 98 12 23 52 602 51G1T Deasserted 6 ...

Page 585: ...ted settings Min Trip ground Fast curve ground The control starts the reclose cycle state 79CY and moves off of reset 79RS Related setting Reclose Initiate 79RI TRIP The control TRIP output asserts Related setting TR 51P1T 51P2T 51G1T 51G2T 51N1T 51N2T 67P2T 67G2T 67N2T 67N3T 81D1T PB9 OC 10 Phase time overcurrent element time delayed output 51P1T Trip is already in progress due to ground time ove...

Page 586: ...ethods 13 3 Testing Via Front Panel Indicators 13 4 Testing Via Output Contacts 13 4 Testing Via Sequential Events Recorder 13 4 SEL 351P Self Tests 13 5 SEL 351P Troubleshooting 13 8 Inspection Procedure 13 8 Troubleshooting Procedure 13 8 All Front Panel LEDs Dark 13 8 Cannot See Characters on LCD Screen 13 8 SEL 351P Does Not Respond to Commands From Device Connected to Serial Port 13 8 SEL 351...

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Page 588: ...g speed and element accuracy b Ensure that the SEL 351P meets the requirements of the intended application c Gain familiarity with SEL 351P settings and capabilities What to test All protection elements and logic functions critical to the intended application SEL performs detailed acceptance testing on all new recloser control models and versions We are certain the recloser controls we ship meet t...

Page 589: ...not shown to have operated during an actual fault within the past maintenance interval The SEL 351P uses extensive self testing capabilities and features detailed metering and event reporting functions that lower the utility dependence on routine maintenance testing Use the SEL 351P reporting functions as maintenance tools Periodically verify that the control is making correct and accurate current...

Page 590: ...ycle event report in response to faults or disturbances Each report contains current and voltage information SEL 351P element states control cable pin statuses and input output contact information If you question the control response or your test method use the event report for more information The EVENT command is available at the serial ports See Section 12 Standard Event Reports and SER SER Com...

Page 591: ...ndence between the Relay Word elements and the TAR command To view the 51P1T element status from the serial port issue the TAR 51P1T command The SEL 351P will display the state of all elements in the Relay Word row containing the 51P1T element Review TAR command descriptions in Section 10 Serial Port Communications and Commands and Section 11 Additional Front Panel Interface Details for further de...

Page 592: ...d The EN front panel LED is extinguished ALARM Output The ALARM output contact signals an alarm condition by going to its deenergized state If the ALARM output contact is a B contact normally closed it closes for an alarm condition or if the SEL 351P is deenergized If the ALARM output contact is an A contact normally open it opens for an alarm condition or if the SEL 351P is deenergized Alarm cond...

Page 593: ...power supply every 10 seconds Failure 14 00 V 16 00 V Yes Latched TEMP Warning 40 C 85 C No Measures the temperature at the A D voltage reference every 10 seconds Failure 50 C 100 C Yes Latched RAM Failure Yes Latched Performs a read write test on system RAM every 60 seconds ROM Failure checksum Yes Latched Performs a checksum test on the SEL 351P program memory every 10 seconds A D Failure Yes La...

Page 594: ... on the main circuit board examines each program instruction memory access and interrupt The SEL 351P displays VECTOR nn on the LCD upon detection of an invalid instruction memory access or spurious interrupt The test runs continuously Micro processor battery charging power supply board Warning No Pulsed The microprocessor on the battery charging power supply circuit board reports a MODE failure i...

Page 595: ... voltage at all SEL 351P inputs if used 4 Measure and record the state of all output contacts if used Troubleshooting Procedure All Front Panel LEDs Dark 1 Input ac power not present and battery discharged 2 Input ac power not present and battery disconnected or otherwise defective 3 Self test failure Cannot See Characters on LCD Screen 1 SEL 351P is deenergized Check to see if the ALARM contact i...

Page 596: ...he factory FACTORY ASSISTANCE The employee owners of Schweitzer Engineering Laboratories Inc are dedicated to making electric power safer more reliable and more economical We appreciate your interest in SEL products and we are committed to making sure you are satisfied If you have any questions please contact us at Schweitzer Engineering Laboratories Inc 2350 NE Hopkins Court Pullman WA USA 99163 ...

Page 597: ......

Page 598: ... List D 1 Message Definitions D 2 A5C0 Relay Definition Block D 2 A5C1 Fast Meter Configuration Block D 2 A5D1 Fast Meter Data Block D 4 A5C2 A5C3 Demand Peak Demand Fast Meter Configuration Messages D 4 A5D2 A5D3 Demand Peak Demand Fast Meter Message D 6 A5B9 Fast Meter Status Acknowledge Message D 7 A5CE Fast Operate Configuration Block D 7 A5E0 Fast Operate Remote Bit Control D 8 A5E3 Fast Oper...

Page 599: ...ime Overcurrent Element 51P1T Pickup Indication G 1 Phase Time Overcurrent Element 51P1T Time Out Indication G 2 Phase Time Overcurrent Element 51P1T Reset Indication G 2 Relay Word Bit Application Examples Phase Time Overcurrent Element 51P1T G 2 Other Relay Word Bits G 3 SELOGIC Control Equations G 3 SELOGIC Control Equation Operators G 3 SELOGIC Control Equation Parentheses Operator G 4 SELOGIC...

Page 600: ...ors listed in processing order G 3 Table G 2 Processing Order of Relay Elements and Logic top to bottom G 11 Table H 1 Data Access Methods H 2 Table H 2 SEL 351P DNP Object Table H 5 Table H 3 SEL 351P DNP Data Map H 9 FIGURES Figure F 1 Minimum Response Time Added to a Negative Sequence Time Overcurrent Element 51QT F 2 Figure F 2 Distribution Feeder Protective Devices F 4 Figure F 3 Traditional ...

Page 601: ......

Page 602: ...ion on trip operation counters in the Breaker Recloser Contact Wear Monitor subsection in Section 8 Breaker Recloser Monitor Battery System Monitor Metering and Load Profile Functions Changed the factory default logic setting BKMON to BKMON WBTR WBTRT 52A Added zero sequence voltage polarized neutral current directional elements to Best Choice Ground Directional Logic Changed the setting range of ...

Page 603: ......

Page 604: ...your computer terminal emulation software select transfer protocol i e XMODEM CRC and transfer files e g send and receive binary files 1 If the relay is in service disable its control functions 2 Connect the personal computer to a relay serial port and enter Access Level 2 3 Execute the SHO C command to retrieve the relay calibration settings Record the displayed settings or save them to a compute...

Page 605: ...your communications software Give the file a unique name to clearly identify the firmware version e g 351P102 S19 After the transfer the relay will respond Download completed successfully 8 Transfer the new firmware to the relay Issue the REC ENTER command to instruct the relay to receive new firmware Note If the relay is power failed during a firmware receive after the old firmware is erased the ...

Page 606: ...ompanying this upgrade The relay will then reboot with the factory default settings If the relay doesn t accept the R_S command then issue the INI command at Access Level 2 Answer Y to the question Are the new I O board s correct Y N In this case the relay settings were retained but the I O board configuration was not retained through the download Answering Y renews the I O board configuration Ent...

Page 607: ...B 4 Firmware Upgrade Instructions Date Code 990215 SEL 351P Manual Técnico The relay is now ready for your commissioning procedure ...

Page 608: ...lt is 01 SETTLE Time in seconds that transmission is delayed after the request to send RTS line asserts This delay accommodates transmitters with a slow rise time OPERATION 1 The relay ignores all input from this port until it detects the prefix character and the two byte address 2 Upon receipt of the prefix and address the relay enables echo and message transmission 3 Wait until you receive a pro...

Page 609: ......

Page 610: ...rate data streams to exploit this feature The binary commands and ASCII commands can also be accessed by a device that does not interleave the data streams SEL Application Guide AG95 10 Configuration and Fast Meter Messages is a comprehensive description of the SEL binary messages Below is a description of the messages provided in the SEL 351P Recloser Control MESSAGE LISTS Binary Message List Req...

Page 611: ...er configuration message 0004 Settings change bit A5C200000000 Demand Fast Meter configuration message 0004 Settings change bit A5C300000000 Peak Demand Fast Meter configuration message 0100 SEL protocol Fast Operate 0101 LMD protocol Fast Operate 0005 DNP V3 00 protocol No Fast Operate 0006 MIRRORED BITS protocol No Fast Operate 00 Reserved checksum 1 byte checksum of preceding bytes A5C1 Fast Me...

Page 612: ... 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 type 0000 Scale factor offset in Fast Meter message 565300000000 Analog channel name VS 01 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 4652455100...

Page 613: ...Peak Demand Fast Meter Configuration Messages In response to the A5C2 or A5C3 request the relay sends the following block Data Description A5C2 or A5C3 Command Demand A5C2 or Peak Demand A5C3 EE Length 01 of status flag bytes 00 Scale factors in meter message 00 of scale factors 16 of analog input channels 01 of samples per channel 00 of digital banks 00 of calculation blocks 0004 Analog channel o...

Page 614: ...ffset in Fast Meter message 50432B000000 Analog channel name PC 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 50332B000000 Analog channel name P3 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 51412B000000 Analog channel name QA 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter...

Page 615: ...2 Analog channel type 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 preceding bytes ...

Page 616: ...nds 31 Operate code open breaker 1 11 Operate code close breaker 1 00 Operate code clear remote bit RB1 20 Operate code set remote bit RB1 40 Operate code pulse remote bit RB1 01 Operate code clear remote bit RB2 21 Operate code set remote bit RB2 41 Operate code pulse remote bit RB2 02 Operate code clear remote bit RB3 22 Operate code set remote bit RB3 42 Operate code pulse remote bit RB3 03 Ope...

Page 617: ...ssert the remote bit for one processing interval 1 4 cycle It is common practice to route remote bits to output contacts to provide remote control of the relay outputs If you wish to pulse an output contact closed for a specific duration SEL recommends using the remote bit pulse command and SELOGIC Control Equations to provide secure and accurate contact control The remote device sends the remote ...

Page 618: ... SETTING ENCLOSED IN QUOTES yyyy CR 30 yyyy CR ETX where STX is the STX character 02 ETX is the ETX character 03 yyyy is the 4 byte ASCII hex representation of the checksum for each line The ID message is available from Access Level 1 and higher DNA Message In response to the DNA command the relay sends names of the Relay Word bits transmitted in the A5D1 message The first name is associated with ...

Page 619: ... RB4 RB5 RB6 RB7 RB8 yyyy LT1 LT2 LT3 LT4 LT5 LT6 LT7 LT8 yyyy SV1 SV2 SV3 SV4 SV1T SV2T SV3T SV4T yyyy SV5 SV6 SV7 SV8 SV5T SV6T SV7T SV8T yyyy SV9 SV10 SV11 SV12 SV9T SV10T SV11T SV12T yyyy SV13 SV14 SV15 SV16 SV13T SV14T SV15T SV16T yyyy 79RS 79CY 79LO SH0 SH1 SH2 SH3 SH4 yyyy CLOSE CF RCSF OPTMN RSTMN FSA FSB FSC yyyy BCW 50P32 NOBATT 59VA TRGTR 52A COMMT CHRGG yyyy SG1 SG2 SG3 SG4 SG5 SG6 ZLO...

Page 620: ...the 4 byte ASCII hex representation of the checksum for the line indicates an unused bit location BNA Message In response to the BNA command the relay sends names of the bits transmitted in the Status Byte in the A5D1 message The first name is the MSB the last name is the LSB The BNA message is STX STSET yyyy ETX where yyyy is the 4 byte ASCII representation of the checksum indicates an unused bit...

Page 621: ......

Page 622: ...message provides data for an external computer to extract data from other compressed ASCII commands To obtain the configuration message for the compressed ASCII commands available in an SEL relay type CAS CR The relay sends STX CAS n yyyy CR COMMAND 1 ll yyyy CR H xxxxx xxxxx xxxxx yyyy CR D ddd ddd ddd ddd ddd yyyy CR COMMAND 2 ll yyyy CR h ddd ddd ddd yyyy CR D ddd ddd ddd ddd ddd yyyy CR COMMAN...

Page 623: ...or a 10 character string yyyy is the 4 byte hex ASCII representation of the checksum A compressed ASCII command may require multiple header and data configuration lines 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 CASCII COMMAND SEL 351P ...

Page 624: ...R MIN SEC MSEC YYYY CR 1D I I I I I I I YYYY CR 14H FREQ SAM CYC_A SAM CYC_D NUM_OF_CYC EVENT LOCATION SHOT TARGETS IA IB IC IN IG 3I2 YYYY CR 1D F I I I 6S F I 17S I I I I I I YYYY CR 11H IA IB IC IG VA kV VB kV VC kV VS kV FREQ TRIG Names of elements in the relay word rows 2 59 separated by spaces YYYY CR 240D I I I I F F F F F 2S 116S YYYY CR CEV R 1 YYYY CR 2H FID BCBFID YYYY CR 1D 35S 4S YYYY...

Page 625: ...xxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR ETX where xxxx is the data values corresponding to the first line labels and yyyy is the 4 byte hex ASCII representation of the checksum CHISTORY COMMAND SEL 351P Display history data in compressed ASCII format by sending CHI CR The relay sends STX FID BCBFID yyyy CR Relay FID string Relay Battery Charger Board FID string yyyy CR REC_NU...

Page 626: ...oard FID string yyyy CR MONTH DAY YEAR HOUR MIN SEC MSEC yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR FREQ SAM CYC_A SAM CYC_D NUM_OF_CYC EVENT LOCATION SHOT TARGETS IA IB IC IN IG 3I2 yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR IA IB IC IG VA VB VC VS FREQ TRIG Names of elements in the relay word separated by spaces yyyy CR xxxx xxxx xxxx xxxx xxxx ...

Page 627: ...r in the digital data field If the specified event does not exist the relay responds STX No Data Available 0668 CR ETX The Names of elements in the Relay Word separated by spaces names are listed in the Relay Word Bits table in section 9 of this manual A typical HEX ASCII Relay Word is shown below 10000004986100000000000000F120280000000001020100000000000000240C0080000000000 00000000000 Each bit in...

Page 628: ...urrent elements 50Q5 and 50Q6 do not have associated timers compare Figure 3 13 to Figure 3 12 If 50Q5 or 50Q6 need to be used for tripping run them though SELOGIC Control Equation variable timers see Figures 7 25 and 7 26 and use the outputs of the timers for tripping Continue reading in Coordinating Negative Sequence Overcurrent Elements in this appendix for guidelines on coordinating negative s...

Page 629: ...dded to a Negative Sequence Time Overcurrent Element 51QT Continue reading in Coordinating Negative Sequence Overcurrent Elements in this appendix for guidelines on coordinating negative sequence time overcurrent elements and a following coordination example COORDINATING NEGATIVE SEQUENCE OVERCURRENT ELEMENTS The following coordination guidelines and example assume that the negative sequence overc...

Page 630: ...ckup time dial lever curve type or time delay settings for this equivalent element to coordinate with the downstream phase overcurrent device as any phase coordination would be performed Load considerations can be disregarded when deriving the equivalent phase overcurrent element settings 4 Multiply the equivalent phase overcurrent element pickup setting by 3 to convert it to the negative sequence...

Page 631: ...A IR Maximum load current through line recloser 150 A 51F Feeder relay phase time overcurrent element 51QF Feeder relay negative sequence time overcurrent element 51R Line recloser phase time overcurrent element phase slow curve Traditional Phase Coordination Figure APPENDIX F 3 Traditional Phase Coordination 51F pickup 600 A above max feeder load IF 51R pickup 200 A above max line recloser load I...

Page 632: ...ivalent phase overcurrent element 51EP in Figure APPENDIX F 4 Curve for 51F is shown for comparison only Figure APPENDIX F 4 Phase to Phase Fault Coordination 51EP pickup 300 A below max feeder load IF Considerable improvement in sensitivity and speed of operation for phase to phase faults is achieved with the 51EP element The 51EP element pickup of 300 A has twice the sensitivity of the 51F eleme...

Page 633: ...negative sequence overcurrent element protecting a distribution bus provides an even more dramatic improvement in phase to phase fault sensitivity The distribution bus phase overcurrent element pickup must be set above the combined load of all the feeders on the bus plus any emergency load conditions The bus phase overcurrent element pickup is often set at least four times greater than the pickup ...

Page 634: ... F Elneweihi E O Schweitzer M W Feltis Negative Sequence Overcurrent Element Application and Coordination in Distribution Protection IEEE Transactions on Power Delivery Volume 8 Number 3 July 1993 pp 915 924 This IEEE paper is the source of the coordination guidelines and example given in this appendix The paper also contains analyses of system unbalances and faults and the negative sequence curre...

Page 635: ......

Page 636: ...r of the following states 1 logical 1 or 0 logical 0 Logical 1 represents an element being picked up timed out or otherwise asserted Logical 0 represents an element being dropped out or otherwise deasserted A complete listing of Relay Word bits and their descriptions are referenced in Table 9 3 in Section 9 Setting the SEL 351P Recloser Control Relay Word Bit Operation Example Phase Time Overcurre...

Page 637: ...hase Time Overcurrent Element 51P1T Reset Indication If phase time overcurrent element 51P1T is not fully reset Relay Word bit 51P1R is in the following state 51P1R 0 logical 0 If phase time overcurrent element is fully reset Relay Word bit 51P1R is in the following state 51P1R 1 logical 1 If phase time overcurrent element 51P1T is not fully reset the element is either Timing on its curve Already ...

Page 638: ... figures in Section 3 Overcurrent Voltage Synchronism Check and Frequency Elements through Section 8 Breaker Recloser Monitor Battery System Monitor Metering and Load Profile Functions are SELOGIC Control Equations labeled SELOGIC Settings in most of the figures SELOGIC Control Equations are set with combinations of Relay Word bits to accomplish such functions as tripping reclosers assigning funct...

Page 639: ...n 52a circuit breaker auxiliary contact logic The SELOGIC Control Equation circuit breaker status setting is labeled 52A See Optoisolated Inputs in Section 7 Inputs Outputs Timers and Other Control Logic and Close Logic in Section 6 Close and Reclose Logic for more information on SELOGIC Control Equation circuit breaker status setting 52A When a circuit breaker is closed the 52a circuit breaker au...

Page 640: ...indication Relay Word bits deassert ULTR 51P1 51G1 NOT 51P1 51G1 As stated previously the logic within the parentheses is performed first In this example the states of Relay Word bits 51P1 and 51G1 are ORed together Then the NOT operator is applied to the logic resultant from the parentheses If either one of 51P1 or 51G1 is still asserted e g 51G1 1 logical 1 the unlatch condition is not true ULTR...

Page 641: ...ady generating a report that encompasses the new transition The rising edge operators in the above factory setting example allow setting ER to see each transition individually Suppose a ground fault occurs and a breaker failure condition finally results Figure APPENDIX G 1 demonstrates the action of the rising edge operator on the individual elements in setting ER Figure APPENDIX G 1 Result of Ris...

Page 642: ... SELOGIC Control Equation event report generation setting is set with the detection of the falling edge of an underfrequency element ER 81D1T When frequency goes above the corresponding pickup level 81D1P Relay Word bit 81D1T deasserts and an event report is generated if the relay is not already generating a report that encompasses the new transition This allows a recovery from an underfrequency c...

Page 643: ...e the OR operators Table APPENDIX G 1 50P1 SH0 Element 50P1 can only cause a trip if the reclosing relay shot counter is at shot 0 When the reclosing relay shot counter is at shot 0 see Table 6 3 Relay Word bit SH0 is in the following state SH0 1 logical 1 If maximum phase current is above the phase instantaneous overcurrent element pickup setting 50P1P see Figure 3 1 Relay Word bit 50P1 is in the...

Page 644: ...ake the following SELOGIC Control Equation output contact setting see Output Contacts in Section 7 Inputs Outputs Timers and Other Control Logic OUT101 TRIP All SELOGIC Control Equations Must Be Set All SELOGIC Control Equations must be set one of the following ways they cannot be blank single Relay Word bit e g 52A IN101 combination of Relay Word bits e g TR 51P1T 51G1T 50P1 SH0 directly to logic...

Page 645: ... time overcurrent element 51P1T is enabled assuming pickup setting 51P1P is made and nondirectional SELOGIC Control Equation Limitations Any single SELOGIC Control Equation setting is limited to 15 Relay Word bits that can be combined together with the SELOGIC Control Equation operators listed in Table APPENDIX G 1 If this limit must be exceeded use a SELOGIC Control Equation variable SELOGIC Cont...

Page 646: ...elay Word bit is asserted it retains the state logical 1 or logical 0 until it is updated again in the next processing interval Table APPENDIX G 2 Processing Order of Relay Elements and Logic top to bottom Relay Elements and Logic corresponding SELOGIC Control Equations listed in parentheses Resultant Relay Word Bits Reference Instruction Manual Section Optoisolated Inputs IN101 IN106 Section 7 Po...

Page 647: ...n 3 Directional Elements E32IV 32QE 32QGE 32VE 32IE F32P R32P F32Q R32Q F32QG R32QG F32V R32V F32I R32I 32PF 32PR 32QF 32QR 32GF 32GR Section 4 Instantaneous Definite Time Overcurrent Elements 67P1TC 67P4TC 67N1TC 67N4TC 67G1TC 67G4TC 67Q1TC 67Q4TC 50P1 50P6 50N1 50N6 50G1 50G6 50Q1 50Q6 67P1 67P4 67P1T 67P4T 67N1 67N4 67N1T 67N4T 67G1 67G4 67Q1T 67Q4T 67P2S 67N2S 67G2S 67Q2S Section 3 Time Overcu...

Page 648: ...y Word Bits OCP OCG OLP OLG OLS HTP HTG HLP HLG CLP RPP RPG RPS SEQC GTP Section 1 Breaker Monitor BKMON BCWA BCWB BCWC BCW Section 8 SELOGIC Control Equation Variables Timers SV1 SV16 SV1 SV16 SV1T SV16T Section 7 OUT101 OUT107 Recloser Control Trip WBTR Close WBCL and Break WBBRK OUT101 OUT107 WBTR WBCL WBBRK Section 7 Targeting Front Panel LED Logic LED1 9 LED11 20 LED24 LED25 Section 5 Display...

Page 649: ......

Page 650: ... Tx 0 1 sec 0 05 MAXDLY Maximum time from DCD to Tx 0 1 sec 0 10 PREDLY Settle time from RTS on to Tx OFF 0 30 sec 0 PSTDLY Settle time after Tx to RTS off 0 30 sec 0 ANADB Analog reporting deadband 0 32767 counts 100 UNSOL Enable Unsolicited reporting Y N N PUNSOL Enable Unsolicited reporting at power up Y N N REPADR DNP Address to report to 0 65534 0 NUMEVE Number of events to transmit on 1 200 ...

Page 651: ... the SEL 351P decides to transmit on the DNP link it has to wait if the physical connection is in use The SEL 351P monitors physical connections by using CTS input treated as a Data Carrier Detect and monitoring character receipt Once the physical link goes idle as indicated by CTS being deasserted and no characters being received the SEL 351P will wait a configurable amount of time before beginni...

Page 652: ... Object Variation Request Qualifiers Response Qualifiers Object Name optional Vendor Name Schweitzer Engineering Laboratories Inc Device Name SEL 351P Highest DNP Level Supported For Requests Level 2 For Responses Level 2 Device Function Master Slave Notable objects functions and or qualifiers supported in addition to the Highest DNP Levels Supported the complete list is described in the attached ...

Page 653: ...riable or Configurable was checked for any timeout Sends Executes Control Operations WRITE Binary Outputs Never Always Sometimes Configurable SELECT OPERATE Never Always Sometimes Configurable DIRECT OPERATE Never Always Sometimes Configurable DIRECT OPERATE NO ACK Never Always Sometimes Configurable Count 1 Never Always Sometimes Configurable Pulse On Never Always Sometimes Configurable Pulse Off...

Page 654: ...s Flags Change No other options are permitted Default Counter Object Variation No Counters Reported Configurable attach explanation Default object 20 Default variation 6 Point by point list attached Counters Roll Over at No Counters Reported Configurable attach explanation 16 Bits 32 Bits Other Value Point by point list attached Sends Multi Fragment Responses Yes No In all cases within the device ...

Page 655: ...it Delta Counter 20 5 32 Bit Binary Counter without Flag 1 0 1 6 7 8 129 0 1 7 8 20 6 16 Bit Binary Counter without Flag 1 0 1 6 7 8 129 0 1 7 8 20 7 32 Bit Delta Counter without Flag 20 8 16 Bit Delta Counter without Flag 21 0 Frozen Counter All Variations 21 1 32 Bit Frozen Counter 21 2 16 Bit Frozen Counter 21 3 32 Bit Frozen Delta Counter 21 4 16 Bit Frozen Delta Counter 21 5 32 Bit Frozen Cou...

Page 656: ...er Event with Time 30 0 Analog Input All Variations 1 0 1 6 7 8 30 1 32 Bit Analog Input 1 0 1 6 7 8 129 0 1 7 8 30 2 16 Bit Analog Input 1 0 1 6 7 8 129 0 1 7 8 30 3 32 Bit Analog Input without Flag 1 0 1 6 7 8 129 0 1 7 8 30 4 16 Bit Analog Input without Flag 1 0 1 6 7 8 129 0 1 7 8 31 0 Frozen Analog Input All Variations 31 1 32 Bit Frozen Analog Input 31 2 16 Bit Frozen Analog Input 31 3 32 Bi...

Page 657: ...7 quantity 1 50 2 Time and Date with Interval 51 0 Time and Date CTO All Variations 51 1 Time and Date CTO 51 2 Unsynchronized Time and Date CTO 07 quantity 1 52 0 Time Delay All Variations 52 1 Time Delay Coarse 52 2 Time Delay Fine 129 07 quantity 1 60 0 All Classes of Data 1 20 21 6 60 1 Class 0 Data 1 6 60 2 Class 1 Data 1 20 21 6 7 8 60 3 Class 2 Data 1 20 21 6 7 8 60 4 Class 3 Data 1 20 21 6...

Page 658: ...or leading for A B C and 3 phase 01 02 1020 Relay Disabled 01 02 1021 Relay diagnostic failure 01 02 1022 Relay diagnostic warning 01 02 1023 New relay event available 01 02 1024 Settings change or relay restart 10 12 00 07 Remote bits RB1 RB8 10 12 08 Pulse Open command OC 10 12 09 Pulse Close command CC 10 12 10 Reset demands 10 12 11 Reset demand peaks 10 12 12 Reset energies 10 12 13 Reset bre...

Page 659: ...0 32 41 Always read as 0 30 32 42 43 A phase MWhr in and out 30 32 44 45 B phase MWhr in and out 30 32 46 47 C phase MWhr in and out 30 32 48 49 3 phase MWhr in and out 30 32 50 51 A phase MVARhr in and out 30 32 52 53 B phase MVARhr in and out 30 32 54 55 C phase MVARhr in and out 30 32 56 57 3 phase MVARhr in and out 30 32 58 63 Demand IA IB IC IN IG and 3I2 magnitudes 30 32 64 67 A B C and 3 ph...

Page 660: ...nce Static reads from these inputs will show the same data as a read from the corresponding index in the 0 499 group Only points that are actually in the SER list SET R will generate events in the 500 999 group Analog 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 64 79 86 104 and 106 are further scaled ac...

Page 661: ...ulse RB7 Pulse RB8 Pulse RB7 20 Pulse CC Pulse OC Pulse CC Pulse OC Pulse CC Pulse OC The Status field is used exactly as defined All other fields are ignored A pulse operation asserts a point for a single processing interval Caution should be exercised with multiple remote bit pulses in a single message i e point count 1 as this may result in some of the pulse commands being ignored and returning...

Page 662: ...17 35 1 56 57 58 59 60 61 62 63 64 65 66 67 100 101 102 103 Binaries Default 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 ...

Page 663: ...H 14 Distributed Network Protocol DNP V3 00 Date Code 991201 SEL 351P Manual Técnico Enter the new DNP Binary map CR ...

Page 664: ...TIMEO 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 PSTDLY Analog reporting deedband counts...

Page 665: ......

Page 666: ...e COM command OPERATION Message Transmission All messages are transmitted without idle bits between characters Idle bits are allowed between messages At 4800 baud one message is transmitted each 1 2 power system cycle At 9600 baud one message is transmitted each 1 4 power system cycle At 19200 and 38400 baud one message is transmitted each 1 8 power system cycle for the SEL 321 and 1 4 power syste...

Page 667: ...in delay a bit by about 1 2 cycle However in that same example a security counter set to two on the SEL 351P will delay a bit by 1 4 cycle because the SEL 351P is receiving new MIRRORED BITS messages each 1 8 cycle from the SEL 321 Synchronization When a node detects a communications error it deasserts ROKx and transmits an attention message which includes its TX_ID setting When a node receives an...

Page 668: ...ll assert a user accessible flag hereafter called RBADx Note The user typically will combine RBADx with other alarm conditions using SELOGIC Control Equations When channel unavailability exceeds a user settable threshold the relay will assert a user accessible flag hereafter called CBADx Note The user typically will combine CBADx with other alarm conditions using SELOGIC Control Equations MIRRORED...

Page 669: ...ay will transmit a message every 1 2 power system cycle and the relay will deassert the RTS signal on the EIA 232 connector Also the relay will monitor the CTS signal on the EIA 232 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 1...

Page 670: ...RMB1DO 1 Mirrored Bits RMB_ Debounce PU time 1 8 msgs RMB2PU 1 Mirrored Bits RMB_ Debounce DO time 1 8 msgs RMB2DO 1 Mirrored Bits RMB_ Debounce PU time 1 8 msgs RMB3PU 1 Mirrored Bits RMB_ Debounce DO time 1 8 msgs RMB3DO 1 Mirrored Bits RMB_ Debounce PU time 1 8 msgs RMB4PU 1 Mirrored Bits RMB_ Debounce DO time 1 8 msgs RMB4DO 1 Mirrored Bits RMB_ Debounce PU time 1 8 msgs RMB5PU 1 Mirrored Bits...

Page 671: ......

Page 672: ...nel p COM p m n Show a communications summary report for events n through m on MIRRORED BITS channel p COM p d1 Show a communications summary report for events occurring on date d1 on MIRRORED BITS channel p COM p n Show a communications summary for events occurring between dates d1 and d2 on MIRRORED BITS channel p Entry of dates is dependent on the Date Format setting DATE_F MDY or YMD DAT Show ...

Page 673: ...Z Show EZ global settings SHO G Show global settings SHO L n Show SELOGIC Control Equation settings for settings group n n 1 6 SHO P n Show port settings for port n n 1 2 3 F SHO R Show Sequential Events Recorder SER settings SHO T Show text label settings for front panel display points and extra local control STA Show recloser control self test status TAR R Reset the front panel tripping targets ...

Page 674: ...hen 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 settings and logic equations from settings group m to settings group n LOO Set MIRRORED BITS port to loopback PAS Show existing Access Level 1 E EZ B and 2 passwords PAS 1 xxxxxx Change Access Level 1 password to xxxxxx PAS E xxx...

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