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I.L. 40-386.1

5-8

using: X = 75

°

(lagging)

V

LN

= Fault voltage chosen for faulted phase, in this example 30 volts

The current required to trip = 4.00A +/- 5 % for fault current lagging fault voltage by 75

°

. This is

the maximum torque angle test. For other points on the MHO circle, change X to a value be-
tween 0

°

and 150

°

, and calculate the value of I.

With the system under test connected as shown in Figure 5-4 and with the settings from Table
5-1 (5-2 for REL 302) applied to the system, adjust the voltages as follows:

V

A

= 30 ang 0

°

V

B

= 70 ang -120

°

V

C

= 70 ang 120

°

Apply current to the A phase current input as shown. The current required to trip is 4.00 amps

±

5% at an angle of 75

°

lagging the fault voltage. This is the “maximum torque angle” test.

When the relay trips, remove the fault current. Zone 1 and AG LED’s will light. The LCD display
will indicate the fault distance. Using the RAISE and LOWER push-buttons the complete fault
record can be reviewed. See Table 4-3 for a description of the displayed fault data quantities.

The significant quantities to review are:

Fault Type – “FLT Type” “AG”
Targets – “Zone1G” “Yes”
Fault Voltages (VA, VB, VC, 3V0 and Currents (IA, IB, IC, IP)

All trip associated contact outputs, should be monitored as a part of this test. Connect appropri-
ate monitoring equipment to the “dry” contact outputs to be monitored. See Figures 4-1, 4-2 and
4-3 for contact output connection. Additionally, with an external jumper connected between
TB1-1 (S

YST

T

EST

) and FT-5 (B

FI

/R

I

E

NA

), the following can be observed:

1.

Breaker failure initiate (BFI)

BFIA-1 and BFIA-2 are closed as long as the fault is applied

after the trip decision is made. BFI contacts “follow” the trip contacts.

2.

General Start (

GS) contact will pick-up for approximately 50 ms immediately after the fault

is applied.

3.

Trip alarm (Trip alarm

, AL-2), relay will pick-up and remain picked up as long as the fault is

applied, after the trip decision is made. The

AL-2 contact “follows” the trip contacts. After

the fault has been removed, AL-2 will remain picked up since the “Trip Alarm” is set to Seal-
in. Alarm 2 can then be reset by pushing the R

ESET

push-button.

4.

Reclosing Initiation (RI) contacts

RI-1 and RI-2 will not operate since the setting “RI type”

is “No RI”. Change “RI Type” to “ØG RI” and re-apply the fault current.

RI-1 and RI-2

should pick-up for approximately 400 ms (after the trip decision has been made).

Repeat the A phase-to-ground fault test and measure the trip time, which should be less than 2
cycles.

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Summary of Contents for REL 301

Page 1: ...on Inc Substation Automation Protection Division Coral Springs FL Allentown PA Instruction Leaflet Effective April 1996 New Information REL 301 302 Version 1 4 Numerical Distance Relay 40 386 4 ABB Network Partner ...

Page 2: ...I L 40 386 4 REL301 302 REVISION NOTICE DATE REV LEVEL PAGES REMOVED PAGES INSERTED 4 96 RELEASED CHANGE SUMMARY A CHANGE BAR LOCATED IN THE MARGIN INDICATES A CHANGE TO THE TECHNICAL CONTENT ...

Page 3: ...all details and variations of this equipment do not pur port to be covered by these instructions If further information is desired by purchaser regarding a particular in stallation operation or maintenance of equipment the local ABB representative should be contacted Copyright ASEA BROWN BOVERI ABB Power T D Company Inc 1993 1994 1995 1996 This document contains information that is protected by co...

Page 4: ...n Equipment Repair Repair work is done most satisfactorily at the factory When returning equipment contact your field sales rep resentative for RMR authorization All equipment should be returned in the original packing containers if possi ble Any damage due to improperly packed items will be charged to the customer Document Overview Section 1 provides the Product Description Section 2 presents the...

Page 5: ... Fault Mode and Restricted Fault Tests 1 5 1 4 3 Unique Characteristics of REL301 302 1 5 1 4 4 Self checking Software 1 6 1 5 UNIQUE REMOTE COMMUNICATION PROGRAM RCP 1 6 1 5 1 ABB Bulletin Board 1 6 1 6 SPECIFICATIONS 1 7 1 6 1 Technical 1 7 1 6 2 External Connections 1 7 1 6 3 Contact Rating Data 1 7 1 6 4 Chassis Dimensions And Weight 1 8 1 6 5 Environmental and Type Test Data 1 8 1 6 6 REL301 ...

Page 6: ...rcurrent Ground RDOG 2 11 2 4 14 Programmable Reclose Initiation and Reclose Block Logic 2 11 2 4 15 Output Contact Test 2 12 2 4 16 Out of Step Block Logic 2 12 2 4 16 1 Subsequent Out of Step Security Logic 2 12 2 4 17 Fault and Oscillographic Data 2 13 2 4 17 1 Fault Data 2 13 2 4 17 2 Oscillographic Data 2 13 2 5 REL302 PILOT SYSTEM 2 14 2 5 1 Pilot System Type 2 14 2 5 1 1 Permissive Overreac...

Page 7: ... Transformer Ratio Setting VT Ratio 3 10 3 3 5 Frequency Setting Freq 3 10 3 3 6 Current Transformer Type Setting CT Type 3 10 3 3 7 Read Primary Setting Read Out 3 11 3 3 8 Ohms Per Unit Distance X Dist 3 11 3 3 9 Distance Type DistUnit Setting 3 11 3 3 10 Reclosing Mode RI Type Setting 3 11 3 3 11 Reclose Initiation Settings 3 11 3 3 12 Remote Breaker Failure Reclose Block RemBF RB 3 11 3 3 13 R...

Page 8: ...INTERFACE MMI 4 3 4 4 1 LED Indicators 4 3 4 4 1 1 LEDs and Display Reset 4 3 4 4 2 Display Module 4 3 4 4 2 1 Front Panel Operation 4 4 4 5 JUMPER CONTROLS 4 6 4 6 COMMUNICATION PORT S USE 4 7 4 6 1 Introduction 4 7 4 6 2 Communication Port Options 4 7 4 6 3 Personal Computer Requirements 4 7 4 6 4 Connecting Cables 4 7 4 6 5 Setting Change Permission and Relay Password 4 8 4 7 FRONT RS 232C COMM...

Page 9: ...0 5 1 7 Output Contact and Input Circuit Verification Test 5 11 5 2 PILOT ACCEPTANCE TESTS FOR REL302 ONLY 5 12 5 2 1 Non Pilot Acceptance Tests for REL301 302 5 12 5 2 2 Input Opto Coupler Check 5 12 5 3 MAINTENANCE PROCEDURES 5 14 5 3 1 Periodic Maintenance Tests 5 14 5 3 1 1 Using Remote or Local Data Communication 5 14 5 3 1 2 Using Man Machine Interface 5 14 5 3 1 3 Routine Visual Inspection ...

Page 10: ... Instantaneous Overcurrent Highset Trip Logic 2 30 REL301 302 Close Into Fault Trip CIFT Logic 2 31 Special Application for CIF Logic With Time Delay Pickup 2 31 REL301 302 Unequal Pole Closing Load Pickup Trip Logic 2 31 Load Loss Accelerated Trip Logic 2 32 Reclosing Initiation Logic 2 32 Out of Step Block Logic 2 32 Out of Step Block Logic Blinder Characteristics 2 33 REL301 302 Unblocking PUTT...

Page 11: ...tics 3 17 Section 4 REL301 302 Terminals 4 15 REL301 302 System External Connection 2 Sheets 4 16 4 17 REL301 302 Breaker Failure DC Schematic 4 18 Section 5 Filter input Module 5 17 Power Supply Output Module 5 18 Microprocessor Module 5 19 Test Connections For AØ Ground Test 5 20 BØ Ground Test 5 21 CØ Ground Test 5 22 AØ Ground Test Dual Polarizing 5 23 SECTION NUMBER PAGE NUMBER ...

Page 12: ...21 Metering Display 4 22 Target Fault Data Display 2 Sheets 4 23 4 24 Programmable Contact outputs 4 25 Communications Cable Requirements 4 26 Dip Switch Setting Chart 4 27 RS PONI 9 Pin Communications Speed Setting 4 27 Section 5 Filter Module Jumper Settings 5 2 Power Supply Module Jumper Settings 5 2 Microprocessor Module Jumper Settings 5 2 Settings Non Pilot System 5 24 Settings Pilot System ...

Page 13: ...c for zero sequence voltage detection The signal VA VB VC produces an output when 3V0 105 volts 1 2 Changed the increment step size of the programmable contact output timers from 10 milliseconds 1 cycle and changed the settable range from 0 5 seconds to 0 2000 cycles 1 3 Added the 52a input to the selectable signals which can be connected to the programma ble contact output logic ...

Page 14: ...t signals LLT TBM to IM IOM respective ly 1 7 Corrected a software error for the operation of the programmable output contact OC 3 1 8 Corrected the LV setting for the use of the programmable output contacts The output contacts of LV should be picked up if any one of the voltages fall below the LV setting In version 1 11 the normally open contacts closed if any one of the voltages exceeded the LV ...

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Page 16: ...input circuits One input 52a which can be used with programmable logic see Optional Features below Software switches for functional tests e g Carrier Send and Carrier Receivers Selectable polarizing for directional overcurrent ground units zero sequence negative se quence and dual Programmable Reclose initiation and reclose block outputs Fault location capability Self checking software Trip contac...

Page 17: ... Synchronism Voltage Check See I L 40 386 12 for details Up to 4 reclose attempts Instantaneous or time delay each reclose attempt Reset Timer Live Line Dead Bus Dead Line Live Bus logic Synchronism check 120 Volt phase to phase synchronism voltage input option 1 3 REL301 302 CONSTRUCTION All of the relay circuitry with the exception of the first line surge protection is mounted on the inner chass...

Page 18: ...isplay module optional consisting of a 2 line 16 character per line liquid crystal display LCD four push buttons for setting data entries and a switch for either protection or reclosing information If the MMI op tion is not supplied the switch is supplied for resetting protection or reclosing LEDs from the front panel Reclosing Synch check Module optional consisting of an independent microcontroll...

Page 19: ...f cycle of fault mode input samples are used to compute the current and voltage vectors and rms values No dc offset compensation is per formed High set instantaneous overcurrent and Zone 1 distance unit tests are executed Re stricted fault testing can speed up tripping by as much as one cycle for high current close in faults up to approximately 50 of the setting reach Instantaneous overcurrent inv...

Page 20: ...ays These arrays are continuously checked by the program If any of the three array entrees disagree a non volatile RAM failure is detected 1 5 UNIQUE REMOTE COMMUNICATION PROGRAM RCP Special remote communications software RCP is provided for obtaining fault metering and cur rent settings data as well as sending data to the REL301 302 RCP can best be described as a user friendly way of using a pers...

Page 21: ...nd carry 3 amps continuously and break 0 1 amps resistive Operating Speed from fault detection to trip contact close 60 Hz ac Voltage VLn ac Current In Rated Frequency Maximum Permissible ac Voltage Thermal Rating Continuous 10 Second Maximum Permissible ac Current Thermal Rating Continuous 1 Second Minimum Operating Current dc Battery Voltages Nominal 48 60 Vdc 110 125 Vdc 220 250 Vdc dc Burdens ...

Page 22: ... supplied 1 6 5 Environmental and Type Test Data Ambient Temperature Range For Operation 20 C to 60 C For Storage 40 C to 80 C Dielectric Test Voltage 2 8 kV dc 1 minute ANSI C37 90 0 IEC 255 5 Impulse Withstand Level 5 kV peak 1 2 50 µsec 0 5 joule IEC 255 5 Fast Transient Surge Withstand Capability 4 kV 5 50 nsec IEC 255 22 6 5kV 10 150 nsec ANSI C37 90 1 Oscillatory Surge Withstand Capability 2...

Page 23: ...th 3V0T and P52a 1 None N COMMUNICATIONS PORT PONI Rear mounted INCOM C RS 232C Default R RS 232C with IRIG B Input B FRONT PANEL INTERFACE LCD Display L RS 232C port R Both B None N RELAY COLOR Black Default Color Beige E 70V Phase to neutral Sync Input 120V Phase to phase Sync Input 1 6 6 REL301 302 Catalog Numbers M V 3 B 1 R N 1 C L FT TEST PLUG Top or Bottom Left or Right ID 13B8453G05 TEST F...

Page 24: ...I L 40 386 4 1 10 2682F39 Sheet 1 of 2 Sub 2 Figure 1 2 REL301 302 Layout Vertical ...

Page 25: ...I L 40 386 4 1 11 2682F39 Sheet 2 of 2 Sub 2 Figure 1 3 REL301 302 Layout Horizontal 8 32 FILLISTER HEAD SCREW 4 SUPPLIED ...

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Page 28: ...Disturbance in V or Ι Mode Fault Relaying Calculations Zone 1 and Pilot Zone Pilot Logic and Channel Control No Fault for 3 Cycles Mode Background Operator Panel Interface Hardware Self Checks N Y N Y Relaying Calculations Zone 2 Zone 3 Out of Step Blinders Inst Overcurrent Ground Backup Phase Selector Checks and Logic Non Pilot Trip Logic Loss of Pot And Loss of Current Data Communications Contac...

Page 29: ...occurs after a time delay of T2 Definite Time or T2 Torque Control Overcurrent Time de pendent on setting choice The Zone 3 measurement has a directional setting choice and may be chosen to respond to forward or reverse faults The reverse sensing option is used in conjunction with the T3 time de lay chosen to coordinate with adjacent terminal s Zone 2 timing The forward sensing option produces tim...

Page 30: ...ts VQ Quadrature phase voltages VCB VAC and VBA for ØA ØB and ØC units respectively 2 2 3 Phase to Phase Fault The phase to phase ØØ unit Figure 2 4 responds to all phase to phase faults and some single phase to ground faults Equations 5 and 6 are for operating and reference quantity re spectively They will produce output when the operating quantity leads the reference quantity VAB IABZCP 5 VCB IC...

Page 31: ... and Zone 1 phase trip indicators information is stored and or sealed in They can be reset by external RESET 3 voltage or through remote communications However pushing the RESET push button will only return the display to METER mode and re set the flashing LEDs but the fault target information will remain in memory Similar operation occurs for Zone 1 single phase to ground faults The Z1G units ØA ...

Page 32: ...satisfies OR 4 Figure 2 5 and operates the trip relay Load restriction out of step blocking loss of potential and overcurrent supervision are similar to zone 1 The tripping and targeting are similar to Zone 1 trip except for the Zone 2 phase time delay trip indicator Zone 2Ø Similar operation occurs for Zone 2 single phase to ground faults The Z2G units OR 151 out put detects the fault and operate...

Page 33: ...tisfies AND 7 operates T3G which provides the TDT signal via OR 3 with Zone 3 ground time delay trip indicator delay trip indicator Zone 3 G For security the Z3G logic is also supervised by the signal of FDOG when Z3G is set forward or by the signal of RDOG when Z3G is set reverse via logic OR 171B AND 171C or AND 171D Operation for Zone 3 ØØG faults is similar to Zone 2 and is via OR 170 T3P and ...

Page 34: ...lt it will retrip again If the breaker is reclosed on an end zone zone permanent fault the normal Z2T time delay trip will take place For a remote external fault either Z1P or Z1G will detect the fault since they are set to overreach High speed trip will be performed HST signal operates the instantaneous reclosing scheme The breaker recloses and stays closed if the fault has been isolated by the a...

Page 35: ...C will block all the distance unit tripping paths via AND 2 AND 3 AND 4 AND 5 AND 6 AND 172 also blocks AND 191 and AND 187 for Pilot Systems if LOP Blk is set to YES All distance units are blocked from tripping but the ground backup regardless of it directional setting and high set overcurrent units Inst Ø and Inst G are operative and converted to non directional operation automatically If LOP Bl...

Page 36: ...R 2 since these trips are classified as high speed trips These high set trip functions can be dis abled by setting the Inst Ø ITP phase and or Inst G ITG ground to Disabled The di rectional characteristic of Inst Ø and Inst G will be automatically converted to non directional protection if the LOP condition occurs and the setting of LOP Blk is YES or will be blocked if LOP Blk is ALL 2 4 7 Close I...

Page 37: ...c without time delay should be selected for all applications with line side potential other than this two relay one breaker scheme configuration 2 4 8 Unequal Pole Closing Load Pickup Logic Figure 2 16 The ground units may pick up on a condition of load pickup or with unequal breaker pole closing The high speed ground units Z1G FDOG and PLTG should be supervised under this condi tion This supervis...

Page 38: ...number relative to a disturbance start K 1 Cycle number before the disturbance start 2 4 11 Ground Directional Polarization Selection The ground directional unit setting Dir Type has three selections Zero Sequence Nega tive Sequ and Dual Polariz which sets the polarization of the forward directional overcur rent ground FDOG unit and reversed directional overcurrent ground RDOG unit If Zero Sequenc...

Page 39: ...switch and setting the Pilot to YES AND 84 will produce logic to operate the RI2 relay when receiving signals from TRSL and AND 89 The program is further controlled by the RI Type setting RI Type setting NO RI 3PRN provides no output therefore will not operate RI2 RI Type setting ØG RI 3PRN will provide output 1 on single phase to ground fault only and will operate RI2 RI Type setting ØØ ØG RI 3PR...

Page 40: ...lay tripping Load Restriction Phase distance unit tripping cannot take place unless 21BI operates This prevents operation of the dis tance relay on load The OSB signal is also applied to the reclosing logic for initiating RB The following quantities are used for the blinder sensing where VXG Phase to ground voltage VAG or VBG IX Phase current in ØA or ØB RC Setting of the unit OS Inner for 21BI RT...

Page 41: ...cent fault record Previous Fault By pressing the RAISE or LOWER push buttons the fault data for P FLT may be reviewed Pressing the RESET push button will reset the LED target indicators and cause the display to return the METER mode Pressing the RESET push button does not erase the stored target data Fault data capture is initiated by one of the following selections of Flt Data setting Trip data c...

Page 42: ...and BLOCKING systems Osc Data Zone 2 Zone 3 Flt Data Trip FDOGTime 3 cycles or longer Pilot Ø Pilot G 150 overreach the next bus Zone 1 Ø Zone 1G 80 of the protected line Zone 3 Ø Zone 3G 100 of the reversed line Zone 3 Reverse Dir required setting 2 5 1 1 Permissive Overreach Transfer Trip Simplified Unblocking Figures 2 20 2 21 2 22 If the system type setting Syst Type is set to POTT REL302 will...

Page 43: ... and keys the pilot channel The output from OR 40 will satisfy the first input to AND 30 Assuming that REVERSE BLOCK LOGIC TBM does not operate and PILOT ENABLE see Figure 2 21 for definition is set then three out of four inputs of AND 30 are satisfied but pilot trip cannot occur since the remote transmitter is still sending a guard or blocking frequency signal CR input to AND 30 is not satisfied ...

Page 44: ... pilot relay system especially when a 3 terminal line is involved since the pilot distance units may have to be set greater than 150 of the line impedance in order to accommodate the infeed ef fect from the tapped terminal Pilot distance units may operate for an external fault on the parallel line when the third source is out of service The TBM block and unblock logic solves this prob lem There ar...

Page 45: ...distance measurement units Z1P or Z1G op erate and pilot trip is performed when the pilot relay PLTP or PLTG operates together with the receiving of a carrier trip signal from the remote end PUTT includes the following logic a Pilot Tripping Logic The Pilot Tripping Logic for the PUTT scheme is the same as for the POTT scheme Figures 2 20 2 21 b Carrier Keying Logic 1 Forward fault keying Figure 2...

Page 46: ... remote trans mitters At the same time output of OR 40 will satisfy one input of AND 48 and also starts the Channel Coordination Timer BLKT See Section 3 2 7e for BLKT setting After the preset time of the channel coordination timer logic AND 47 will satisfy AND 48 if there is no received carrier signal from either remote or local and if the local transient block is not set 0 50 timer input to AND ...

Page 47: ...which includes OR 41C 32 0 ms timer AND 41B and OR 41 to prevent false tripping It utilizes the not FDOP or FDOG and LV condition LV units can be set between 40 and 60 volts to initiate the TBM circuit and sends a blocking signal to the remote terminal s Setting OS Block to YES supervises AND 41B when this additional logic is required 6 Internal fault preference and squelch On a close in fault the...

Page 48: ...zero sequence or negative sequence polarizing voltage will ini tially have a polarity opposite to its fault derived polarity Reverse looking ground unit could pick up start the reverse block logic and maintain it for 50 ms causing the correct tripping to be delayed The BLOCK THE BLOCK logic prevents this delay The Reverse Block Logic also in cludes the reverse looking Zone 3 Ø Zone 3 G Z3P Z3G log...

Page 49: ...for system security if either channel is received For a fault which is detected by relays at both remote terminals AND 55 logic will not be satisfied then channel CR will be performed via the logic which allows pilot tripping Figure 2 22 OR 21 2 5 6 Weakfeed Trip Application a Block Weakfeed Special logic for a weakfeed terminal is not required for Blocking systems since Blocking systems requires ...

Page 50: ...output from the REVERSE BLOCK LOGIC and with output from OR 44 low voltage con dition will satisfy AND 66 Weakfeed trip a high speed trip will occur after 50 ms via OR 2 Figure 2 5 The time delay is for coordination because the voltage trip units are non di rectional 2 5 6 1 Weakfeed System Application For weakfeed applications an inherent part of the logic requires reverse fault detection Zone 3 ...

Page 51: ...I L 40 386 4 2 23 Figure 2 2 Mho Characteristic for Phase to Ground Faults Figure 2 1 REL301 302 Characteristics R X Diagram 9651A57 Sub 3 9654A13 Sub 2 ...

Page 52: ...L 40 386 4 2 24 Figure 2 3 Mho Characteristics for Three Phase Faults No Load Flow Figure 2 4 Mho Characteristics for Phase to Phase and Two Phase to Ground Faults No Load Flow 9654A14 Sub 1 Sub 1 9654A15 ...

Page 53: ...more than two 2 inputs OR INPUTS A B OUTPUT INPUTS OUTPUT A B 0 0 I I 0 I 0 I 0 I I I ELECTROMECHANICAL CONTACT EQUIVALENT SIGNAL INPUT WILL PRODUCE AN OUTPUT ALL INPUTS PRODUCE AN OUTPUT A B INCLUSIVE OR INPUTS OUTPUT 0 I I 0 NEGATION NOT INPUT INPUT OUTPUT OUTPUT OR ABSENCE OF INPUT SIGNAL PRODUCES OUTPUT TIMERS INPUT OUTPUT TP TD Input changes to Active State 1 Output changes to Active State Af...

Page 54: ...I L 40 386 4 2 26 Figure 2 6 Zone 2 Trip Logic Figure 2 5 Zone 1 Trip Logic 9657A49 Sub 2 9657A50 Sub 2 Denotes Change ...

Page 55: ...I L 40 386 4 2 27 Figure 2 8 Zone 1 Extension Scheme Figure 2 7 Zone 3 Trip Logic 1503B49 Sub 2 9662A64 Sub 1 ...

Page 56: ...I L 40 386 4 2 28 9657A61 Sub 1 Figure 2 9 Inverse Time Overcurrent Ground Backup Logic 9662A65 Sub 1 Figure 2 10 Loss of Potential Logic ...

Page 57: ...I L 40 386 4 2 29 Figure 2 12 Loss of Current Monitoring Logic Figure 2 11 Loss of Potential Logic System Diagram Sub 2 9657A54 9654A18 Sub 1 ...

Page 58: ...I L 40 386 4 2 30 Figure 2 14 Instantaneous Overcurrent Highset Trip Logic Figure 2 13 Overcurrent Supervision 9662A66 Sub 1 9657A58 Sub 1 ...

Page 59: ...equal Pole Closing Load Pickup Trip Logic Reverse Block TBM Logic Figure 2 15a REL301 302 Close Into Fault Trip CIFT Logic 9657A55 Sub 2 9661A32 Sub 2 Figure 2 15b Special Application for CIF Logic with Time Delay Pickup 9657A56 Sub 2 ...

Page 60: ...I L 40 386 4 2 32 Figure 2 17 Load Loss Accelerated Trip Logic 9657A59 Sub 2 1503B51 Sub 3 Figure 2 18 Reclosing Initiation Logic 1503B50 Sub 2 Figure 2 19a Out of Step Block Logic ...

Page 61: ...I L 40 386 4 2 33 Figure 2 20 REL302 POTT Unblocking PUTT and Blocking Pilot Relay 9657A63 Sub 2 9654A25 Sub 1 Figure 2 18b Out of Step Block Logic Blinder Characteristics ...

Page 62: ...I L 40 386 4 2 34 Figure 2 21 REL302 POTT Unblocking and PUTT Pilot Trip Logic Figure 2 22 REL302 Channel Sending Receiving Logic in POTT Unblocking Schemes 9662A67 Sub 1 1503B52 Sub 2 ...

Page 63: ...I L 40 386 4 2 35 Figure 2 23 REL302 Channel Sending Receiving Logic in PUTT Scheme 1503B53 Sub 2 9657A62 Sub 2 Figure 2 24 REL302 Blocking System Logic ...

Page 64: ...I L 40 386 4 2 36 Figure 2 25 Power Reversal on POTT Unblocking Schemes 9654A17 Sub 1 Figure 2 26 Unequal Pole Closing on Fault 9654A29 Sub 1 ...

Page 65: ...I L 40 386 4 2 37 Figure 2 28 REL302 Additional Logic for POTT Unblocking Schemes on 3 Terminal Line Application 9662A68 Sub 1 Figure 2 27 REL302 Pilot Ground Trip Supplemented by FDOG 9657A65 Sub 3 ...

Page 66: ...I L 40 386 4 2 38 Figure 2 30 REL302 Weakfeed Application 9662A69 Sub 1 Figure 2 29 REL302 Additional Logic for PUTT Scheme on 3 Terminal Line Application 1503B54 Sub 2 ...

Page 67: ...I L 40 386 4 2 39 Figure 2 31 REL302 Reversible Zone 3 Phase and Ground Reverse Block Logic 1503B55 Sub 2 ...

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Page 75: ...p with one setting Low IØ One ground overcurrent unit 3I0s for Loss Of Current monitoring Three non directional medium set overcurrent units IAM IBM ICM for phase distance super vision with one setting IM One non directional medium set ground overcurrent unit I0M for ground distance supervi sion with one setting 3I0m 0 5 10 in 0 5 A steps for 5 A ct type 0 1 2 in 0 1 A steps for 1 A ct type Three ...

Page 76: ...302 only supervision with one setting Low V 40 to 60 Vrms in 1 Volt steps OHMS PER UNIT DISTANCE X Dist For fault locator measurement 0 300 1 500 in 0 001 Ohms per Distance Unit Kilometers or Miles in primary ohms OUT OF STEP BLOCK OS Block OUT OF STEP BLOCK Override Timer OSOT 400 4000 ms in 16 ms steps OUT OF STEP BLOCK Inner Blinder OS Inner 1 0 15 0 Ohms in 0 1 Ohm steps NOTE The inner blinder...

Page 77: ...ents and configurations However the selection of each set ting has to be carefully considered if the maximum fault current is 200 Amperes secondary or above If the maximum fault current is 200 Amperes secondary the following restric tions must be observed ZOL ZIL less than or equal to 7 5 The setting difference of Ang Pos Ang Zero 50 or less If the maximum fault current is less than 200 Amperes se...

Page 78: ... be 70 75 Se vere subsidence transient related overreach has been noted in cases where low capac itance CCVT s are used in short line applications An alternative to reducing the Zone 1 setting is to introduce a Zone 1 time delay T1 of one or two cycles and using the 80 percent Zone 1 reach calculation 3 2 3 Zone 2 Distance Settings Generally Zone 2 reach is set for 100 of the protected line plus 5...

Page 79: ...uld be set as sensitive as possible A setting of 0 5 amperes is recommended 3I0s 0 5 Amps d The medium set ground overcurrent unit is used for supervising all ground distance units the forward directional overcurrent ground unit FDOG Generally it is recommended to be set 2 times the 3I0s setting 3I0m 2 x 3I0s 1 0 Amps e The directional high set overcurrent phase and ground units Inst Ø and Inst G ...

Page 80: ...3 ZA ZL Adding a 50 margin to cover the inaccuracies of this expression Rmax 0 104 ZA ZL primary ohms RS 0 104 ZA ZL RC RV secondary ohms Set inner blinder to OS Inner RT RS x COS 90o PANG 1 This is the minimum permissible inner blinder setting when it is used to provide a restricted trip area for a distance relay Another criterion that may be considered is based upon the rule of thumb that stable...

Page 81: ...ormally set to 0 cy cles The zone 1 timer could be used to delay tripping when coordinating with a slower operating device at a remote terminal The timer also can be used to delay tripping for co ordination of relay systems at the same terminal when the coordination is with a slower device b Zone 2 timers for phase and ground have two choices of time delay type Choices are def inite time T2Ø Type ...

Page 82: ...Control pro vides access to seven sets of overcurrent curves which are similar to ABB CO curves Three settings T2Ø CV T2Ø PkUp and T2Ø TC must be determined to apply phase torque controlled overcurrent protection Similar settings are required for the ground torque controlled overcurrent protection a T2Ø CV Zone 2 phase overcurrent curve family setting Seven sets families of CO type overcurrent cur...

Page 83: ...nd R are constants and are shown in Table 3 1 Torque control of the overcurrent functions is by way of the operation of zone 2 phase and or ground distance logic operating When a zone 2 distance decision is made the overcurrent log ic is enabled and the curve timing begins Operation time of the zone 2 distance phase or ground decision must be added to the overcurrent trip time calculated above Sin...

Page 84: ...lt data taken where TRIP to store fault data only if trip action occurs Z2TR to store fault data if Zone 2 units pick up or any trip action occurs Z2Z3 to store fault data if Zone 2 or Zone 3 units pick up or any trip action occurs 3 3 3 Current Transformer Ratio Setting CT Ratio The CT Ratio is used for the fault distance calculation and load current monitoring if it is se lected to be displayed ...

Page 85: ... the setting of X Dist For this example select DistUnit MILE 3 3 10 Reclosing Mode RI Type Setting RI Type is for selecting the reclosing mode It has four setting positions No RI ØG RI ØØ ØG RI 3Ø ØØ ØØG ØG RI Refer to the guidelines for reclosing mode programming for the RI Type setting selection in Section 2 4 14 3 3 11 Reclose Initiation Settings Fast RI Zone 2 RI and Zone 3 RI provide the sele...

Page 86: ...cked as desired It is recommended to set FDOGTime to 3 cycles or longer Refer to Section 2 5 2 for the detailed information 3 3 16 Distance Overcurrent Individual distance and overcurrent logic can be disabled if required by the application by set ting the unit to Disabled a List of units which can be disabled Pilot Ø Pilot G Zone 1 Ø Zone 1 G Zone 2 Ø Zone 2 G Zone 3 Ø Zone 3 G Inst Ø Inst G and ...

Page 87: ...e directional ground overcurrent polarization is controlled by the setting of Dir Type It has 3 selections Zero Sequence Zero sequence voltage polarization Negative Sequ Negative sequence voltage polarization Dual Polariz Both zero sequence voltage and current polarization 3 3 24 Overcurrent Ground Backup The overcurrent ground backup function provides seven sets of curves which are similar to the...

Page 88: ...GB Pickup Pickup setting GBT Curve Time curve dial setting 1 to 63 T0 K C P and R are constants and are shown in Table 3 1 Taking the CO 8 curve set as an example see Figure 2 36 assuming that the maximum 3Io of unbalanced load is 0 2A the minimum ground fault current for a fault two buses away is 10A and 0 7 seconds is required for coordination with current of 20 times the GB Pick up setting then...

Page 89: ...30 Remote Setting Rem Set Set the Rem Set to Remote Allowed if remote setting via communications port is re quired 3 3 31 Real Time Clock Setting With REL 301 302 in the setting mode scroll the function field to Set Time and change the value to Yes Depress function push button RAISE to display Year Month Day Weekday Hour and Minute and set the corresponding number via the value field The REL 301 3...

Page 90: ...08 477 84 4122 08 1 27 1 9200 C09 310 01 2756 06 1 35 1 9342 C011 110 17640 00 0 5 2 8875 TABLE 3 2 RECLOSING INITIATION MODE PROGRAMMING RI Type Type Of Fault Reclosing Initiation Mode No RI All Faults No reclosing initiation ØG RI ØG RI 1 RI 2 contacts close All Other Faults no reclosing ØØ ØG RI ØG ØØ RI 1 RI 2 contacts close 3Ø Faults no reclosing 3Ø ØØ ØØG ØG All Faults RI 1 RI 2 contacts clo...

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Page 92: ...t Touch the outer contacts of any FT 10 switch they may be energized c Release frame latches by pushing the top and bottom latches inward towards the center of the relay d The inner chassis removal lever is located on the left center vertical mount or on top cen ter horizontal mount of the inner chassis Push the lever towards the middle tab on the frame e Slide out the inner chassis f Reverse proc...

Page 93: ...s TB3 3 TB3 4 Terminals TB3 5 TB3 6 Terminals TB3 7 TB3 8 Terminals TB3 11 TB3 12 Terminals TB3 13 TB3 14 Terminals TB3 15 TB3 16 Terminals TB3 17 TB3 18 Terminals TB3 19 TB3 20 Terminals TB3 21 TB3 22 Terminals TB3 23 TB3 24 Terminals TB3 15 TB3 26 Terminals TB3 27 TB3 28 Trip rated1 programmable contact Jumper connected to FT 5 required to power BFI I enable function Enabled Disabled by FT 5 Iso...

Page 94: ...1 302 comes with LEDs on the front panel IN SERVICE LED should be on all other indicators are off in normal conditions but after a trip the ones related to the trip blink If a second trip occurs the LEDs related to the latest fault double blink See Section 5 1 1 for more details 4 4 1 1 LEDs and Display Reset The push button labelled RESET is used to reset all the trip LEDs and send the display to...

Page 95: ...y between the first and last characters on the second line At this point other values for the same function can be scrolled through by depressing the LOWER or RAISE push button When the desired value is reached select it by pressing ENTER until VALUE UPDATED shows on the display After the value is updated the system then returns to the function scroll state In order to restore the original value w...

Page 96: ...emory and the L Flt related LEDs double blink If Flt Data is set to Zone 2 two events Zone 2 pickup and trip will be stored If Flt Data is set to Zone 2 Zone 3 the two events will be either Zone 2 pickup or Zone 3 pickup and any type of trip NOTE All displayed Phase Angles use V AG as reference d TEST MODE The test display mode provides diagnostic and testing capabilities for REL301 302 Relay stat...

Page 97: ...d closing the FT switch red handles 4 5 JUMPER CONTROLS All jumpers are set at the factory the customer normally does not need to move the jumpers Refer to Tables 5 1 5 2 and 5 3 for the recommended jumper positions Function Field Value Field Description m RX1 m RX2 m RX1 RX2 Trip BFI RI2 3RI RB u Fail Alarm Trip Alarm Gen Start m Send m Stop s OC1 s OC2 s OC3 s OC4 s OC5 Stop Simulate Simulate Si...

Page 98: ... is identified by a 25 pin DB 25S female connector it is usually black and has a single data comm rate of 1200 bps The second style is a RS PONI see I L 40 610 for details identified by a 9 pin DB 9P male connector and externally acces sible dip switches next to the connector for setting the communication data rate This port op tion is always black in color can be set for speeds of 300 1200 2400 4...

Page 99: ...ull modem Null modem s function is to connect the transmit line TXD pin 2 by RS 232C standard to the re ceive line RXD pin 3 A null modem is required when connecting like devices That is DTE to DTE or DCE to DCE A DCE to DCE example where a null modem is required is the connec tion of a 25 pin PONI to a modem A null modem function can be accomplished in the connecting cable or by separate null mod...

Page 100: ...port This data rate is set when configuring communications on the communicating device If the communicating device is a PC the data rate is set by RCP either when setting up RCP or by changing settings while running RCP To set the data rate on the front comm port the five dip switch poles of switch S1 see Figure 1 13 must be set according to Table 4 6 When the relay is viewed from the front front ...

Page 101: ... RELAY ALL PRIOR INTERMEDIATE TARGET DATA AND OSCILLOGRAPHIC DATA WILL BE LOST 4 10 PROGRAMMABLE CONTACT OUTPUTS Optional Feature REL 301 302 has five output contacts OC 1 to OC 5 which can be dedicated to user selected functions OC 1 has the same rating as the trip contacts OC 2 OC 5 have the same rating as non trip contacts See Section 1 6 3 for contact ratings The 30 available functions are lis...

Page 102: ...ribed in the following The REL 301 302 s programmable logic capa bilities permit its use in this application The scheme can be simple two contacts with time de lays BF1 and BF2 or more complex using the two contacts mentioned plus one contact OC1 as a Retrip and another contact with time delay as the control timer function A simple scheme is described below 1 Operation When a breaker failure initi...

Page 103: ... Breaker Failure table at the end of this section with time delays filled in for each of the following BF1 Breaker Failure Time Phase BF2 Breaker Failure Time Ground R1 2 Reset Time Delay 3 Settings a Overcurrent units The phase unit IM must be set below the minimum expected CT secondary phase fault cur rent through the protected breaker and the ground unit must be set less than the minimum ex pec...

Page 104: ...ve F Contact C P P 3 S 3 E P S P A I Z Z Z Z L L I E O R I C C V I Z Z C L W T 5 I B L Output O N F 2 2 3 3 G T T O N S I O R R 0 T 1 1 H T R F O 2 T I L F O R D T P G P G B G P S D B 2 M 1 2 T G G P O X B T P A P M V I P 1 2 3 4 5 T Contact 1 Pickup Timer 0 msec Contact 1 Dropout Timer 0 msec Contact 2 Pickup Timer 0 msec Contact 2 Dropout Timer 0 msec Contact 3 Pickup Timer 0 msec Contact 3 Drop...

Page 105: ...inals Dtp drawing 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 Output 1 Output 2 1 2 3 4 5 6 7 8 9 10 1 2 3 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Communications Port Connector Use Mounting Stud For Case Grounding ...

Page 106: ...SE WHEN BREAKER CLOSES a AUX SW CLOSED WHEN BREAKER IS CLOSED bb AUX SW EARLY CLOSE WHEN BREAKER OPENS b AUX SW CLOSED WHEN BREAKER IS OPEN CC CLOSE COIL TC TRIP COIL X CLOSE A UX Y ANTI PUMP 86BF BREAKER FAILURE LOCKOUT 101 BREAKER CONTROL SWITCH C CLOSE CONTACT T TRIP CONTACT NOTE Input must be shorted when not used Jumper between BFI RI ENA and Sys Test required to enable BFI and RI functions ...

Page 107: ...I L 40 386 4 4 16 Figure 4 3 REL 301 302 Systems External Connection Sub 3 1613C80 Sheet 2 of 2 SEE SHEET 1 FOR DETAILS OF FT SWITCH1 CONNECTIONS Denotes Change ...

Page 108: ...ker Failure DC Schematic 52 TC 52a 86 BF DC Supply Voltage DC Supply Voltage 86 BF OC1 OC2 OC3 OC4 BF TIME 1 BF TIME 2 TRIP A1 FT 6 FT 8 TB1 3 TB1 2 TB3 17 TB3 18 TB3 12 TB3 11 TB3 19 TB3 20 BREAKER FAILURE TRIP CC BFIA 1 62x Other 52a TB4 4 TB4 3 ...

Page 109: ...Type TTYP No RI ØG RI ØØ ØG RI 3Ø ØØ ØØG ØG RI Off 1PR 2PR 3PR High Speed RI Fast RI HSRI None Z1 Inst I Pilot Pilot Z1 Inst I NO Z1 I PLT ALL RI on Zone2 Trip Zone2 RI Z2RI Yes No YES NO RI on Zone3 Trip Zone3 RI Z3RI Yes No YES NO Breaker Failure Reclose Block RemBF RB BFRB Yes No YES NO Enable Pilot Logic Pilot PLT Yes No YES NO Pilot System Selection SystType STYP Non Pilot Zone1 Extension POT...

Page 110: ...ISAB DEFTM TORQ 0 100 2 99 SEC CO 2 5 6 7 8 9 11 I R 0 500 10 00 AMPS 1 63 Zone3 Phase Unit Zone3 Ø Z3P Disabled 0 01 50 00 OHMS OUT 0 01 50 00 OHMS Zone3 Phase Timer T3 Ø T3P Blocked 0 10 9 99 Sec BLK 0 10 9 99 SEC Zone3 Ground Unit Zone3 G Z3G Disabled 0 01 50 00 OHMS OUT 0 01 50 00 OHMS Zone3 Ground Timer T3 G T3G Blocked 0 10 9 99 Sec BLK 0 10 9 99SEC Zone3 Direction Zone3 Z3FR Forward Dir Rev...

Page 111: ... GBTCurve GTC 1 63 1 63 Choice of Directional or Non Directional Ground Backup GB Dir GDIR Yes No YES NO Close Into Fault Trip CIF Trip CIF CIF Trip CIF Trip w delay No CIF Trip CF CFT OUT Load Loss Trip LL Trip LLT Yes FDOG No YES NO FDOG Loss of Potential Block LOP Blk LOPB Yes All No YES NO ALL Loss of Current Block LOI Blk LOIB Yes No YES NO Trip Alarm Seal In Trip Alm AL2S Seal In No Seal In ...

Page 112: ...te Of Last Setting Change Last Set LOP Condition if present LOP LOI Condition if present LOI Out of Step Block if present OS Block RCP Function Value Value Field Function Value Value Field VAG MAG ANG _ _ _ VOLTS _ _ _ DEG IA MAG ANG _ _ _ AMPS _ _ _ DEG VBG MAG ANG _ _ _ VOLTS _ _ _ DEG IB MAG ANG _ _ _ AMPS _ _ _ DEG VCG MAG ANG _ _ _ VOLTS _ _ _ DEG IC MAG ANG _ _ _ AMPS _ _ _ DEG V1 MAG ANG _ ...

Page 113: ...eceiver 2 Rx Ch2 RX2 Yes No YES NO Weakfeed Trip Weakfeed WFT Yes No YES NO High Set Phase Trip Inst Ø ITP Yes No YES NO High Set Ground Trip Inst G ITG Yes No YES NO Close Into Fault Trip CIF Trip CIF Yes No YES NO Load Loss Trip LL Trip LLT Yes No YES NO Ground Backup Trip GB Trip GB Yes No YES NO Fault Location Imp Flt Z FANG Magnitude Ω and angle Magnitude Ω and angle OHMS DEG Fault Distance F...

Page 114: ...Volts Angle VOLTS DEG Phase C Fault Current IC Flt IPCMAG ANG Magnitude Volts Angle VOLTS DEG IP Fault Current IP Flt INMAG ANG Magnitude Volts Angle VOLTS DEG Date of Fault Date Flt Month day and year Time of Fault Time Flt Hours Minutes Seconds and Hundredths Information Function Value Front Panel RCP Front Panel RCP NOTE On front panel display all Yes or No information displayed when the answer...

Page 115: ...current indication SEND Carrier Send OSB Out of step block pickup RI2 Reclose initiation IOM Mediumset overcurrent ground CR1 Receive Channel 1 signal CR2 Receive Channel 2 signal 3V0T Produces an output when 3V0 105 volts ITG High set overcurrent ground trip Z1G Zone1 ground trip Z1P Zone1 phase trip ECHO Weakfeed echo key PLTX Pilot in service includes external 85CO input RB Reclosing block WFT ...

Page 116: ...To port 25 pin DTE To PC 9 or 25 pin DCE DB 25S RS 232C connected to modem Null Modem 2 3 7 To port 25 pin DTE to Modem 25 pin DTE DB 9P RS 232C connected to PC Null Modem 2 3 5 To port 9 pin DCE To PC 9 or 25 pin DCE See IL 40 610 For set tings DB 9P RS 232C connected to modem Straight 2 3 5 To port 9 pin DCE To Modem 25 pin DTE See IL 40 610 For set tings DB 9S RS 232C connected to PC Straight 2...

Page 117: ...Port Data Rate bps 0 0 0 300 Logic 1 is towards Printed Circuit Board Dip Switch poles 4 5 are not used 0 0 1 1200 0 1 0 2400 0 1 1 4800 1 0 0 9600 1 0 1 19200 1 1 0 1200 1 1 1 1200 DIP Switch 1 2 3 BPS 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 1 1 1 300 1200 2400 4800 9600 19200 1200 1200 NOTE DIP switches 4 and 5 are not used ...

Page 118: ...ering mode display test Settings application Hardware Verification Impedance Accuracy Check Tests of all inputs and contact outputs Additionally if the relay under test is a REL 302 the pilot logic and pilot distance measuring function will be tested Test Equipment The minimum test equipment required is One 3 phase variable magnitude and phase angle Y connected voltage source One 1 phase variable ...

Page 119: ...5 Vdc P12 Sync Check Voltage Reference VA P13 Receiver 2 Input Voltage Selection 48 125 Vdc Table 5 2 Power Supply Module See Figure 5 2 for Location Jumper Identification Jumper Purpose Factory Setting JMP1 Carrier Stop Normally Open NO JMP2 Carrier Send Normally Open NO JMP5 Output contact 4 Normally Open NO JMP4 Output Contact 3 Normally Open NO JMP3 Output Contact 2 Normally Open NO JMP6 Relay...

Page 120: ...the front panel has additional LEDs up to 6 with sync check and the MMI has a switch to toggle between the reclosing settings and protec tion settings Separation of reclosing settings from protection settings alleviates the need to scroll through the reclosing settings when protection settings are in progress STEP 1 To begin the test procedure apply rated dc voltage to terminals FT 11 and FT 20 Th...

Page 121: ... accept each setting When all settings have been entered the entire settings set should be reviewed for correctness before continuing with this procedure Setting application example OSC Data setting 1 Press the RAISE push button to display the OSC Data setting upper left corner of the display 2 Press the ENTER push button to enable the value to be changed 3 Press the RAISE push button to display O...

Page 122: ...voltages and associated angles See Table 4 2 for the details of the METER mode displayed quantities 5 1 3 TEST MODE The TEST display mode provides diagnostics and testing capabilities for REL 301 302 Relay self check routine results as previously described in Step 1 above and output relay contact testing are among the functions in the TEST mode Also included is the ability to test front pan el LED...

Page 123: ...ck routine All data stored in the EEPROM is written to 3 identical arrays These arrays are continuously checked for agreement with each other If any of the 3 arrays disagree 2 arrays must agree with each other an EEPROM Warning is given This is the only failure which does not take the protection out of service Also the Protection In Service LED remains lighted EPROM Checksum Failure indicates the ...

Page 124: ...ackground mode to fault mode processing In fault mode only processing related to fault calculation trip logic analysis are done All back ground mode functions not related to tripping are stopped The operate criteria for the disturbance detector Fault Detector are Phase current IA IB or IC 1 0A peak and 12 5 change Ground current I0 0 5 A peak Phase voltage VA VB or VC 7V and 12 5 change with a cur...

Page 125: ...rrents IA IB IC IP All trip associated contact outputs should be monitored as a part of this test Connect appropri ate monitoring equipment to the dry contact outputs to be monitored See Figures 4 1 4 2 and 4 3 for contact output connection Additionally with an external jumper connected between TB1 1 SYST TEST and FT 5 BFI RI ENA the following can be observed 1 Breaker failure initiate BFI BFIA 1 ...

Page 126: ... IC IP For CG fault test make connections as shown in Figure 5 6 and adjust the voltages as follows VA 70 ang 0 VB 70 ang 120 VC VF 30 ang 120 Apply current to the C phase current input as shown The current required to trip is 4 00 Amps 5 at the angle of 75 lagging the fault voltage When the relay trips remove the fault current Zone 1 and CG LED s will light The LCD display will indicate the fault...

Page 127: ...kup curve family setting GBPickup 0 5 Amps Overcurrent ground backup pickup setting GBTCurve 24 Overcurrent ground backup curve selection setting GB Dir YES Overcurrent ground backup directional choice setting Since the GB Dir YES the Ground Backup logic is directional torque controlled and is supervised by Forward Directional Overcurrent Ground FDOG logic In order to test the direc tional logic 3...

Page 128: ...mode The display should read STATUS 0 indicating the self checking startup initialization routine was completed successfully and the system is continuously passing the self checking routine Press the RAISE push button and scroll to contact output to be tested All contact outputs can be tested See the CONNECTION SPECIFICATION CHART in Section 4 3 and Relay Output Test in Section 4 4 2 1 for contact...

Page 129: ... procedure in Step 4 above Pilot YES Enable pilot logic SystType Blocking Pilot system selection setting Pilot Ø 4 5 Ohms Pilot phase distance reach setting Pilot G 4 5 Ohms Pilot ground distance reach setting Dir Type Zero sequence Directional overcurrent polarization choice setting GB Type Disabled Overcurrent ground backup curve family setting Test Using Blocking System Apply an AG fault as des...

Page 130: ...voltage to terminals TB4 11 and TB4 12 simulates the receipt of a pilot blocking signal Again apply an AG fault as described in Step 6 The REL 302 should not trip Remove voltage from terminals TB4 11 and TB4 12 Receipt of the pilot signal can also be simulated from the front panel Using the procedure outlined in Step 5 press the SELECT push button until the TEST mode is selected Dis played is the ...

Page 131: ...ed to the Receiver 1 input c Repeat the tests in Part b Above except using the Receiver 2 input by applying rated dc voltage to terminals TB4 13 and TB4 14 In the front panel test substitute Rx2 This completes the REL 302 Pilot Acceptance Test 5 3 MAINTENANCE PROCEDURES NOTE It is NOT recommended to perform any type of invasive periodic maintenance test requiring relay disassembly 5 3 1 Periodic M...

Page 132: ...minals FT 1 2 3 4 12 19 through an external mating connector 4 On the microprocessor module move jumper from position JP3 to JP6 see Figure 5 3 5 On input filter module remove U6 Sample Hold device from its socket 6 Connect a digital voltmeter with at least 5 digit accuracy to TP3 and TP2 common on the input filter module 7 Using a battery and potentiometer connect the adjustable voltage to TP1 an...

Page 133: ...ment to TP1 on the microprocessor module and TP7 common on the input filter module 19 On the microprocessor module adjust variable capacitor C6 and read the period of pulses at TP1 It should be 1 000000 second 0 000002 20 Turn OFF the dc power supply 21 Remove the power leads and external connector 22 On the microprocessor module move jumper from position JP6 to JP3 and replace front panel with si...

Page 134: ... RCVR SYNC CHECK REFERENCE 2 1 ENABLE Not Used 220 250 48 125 15 20 220 250 48 125 15 220 250 48 125 20 15 20 15 220 250 48 125 20 15 220 250 48 125 20 220 250 15 20 48 125 Inputs are in Volts dc Common for clock calibration Sample Hold Device Test Points fot A D Calibration Trim Pots fot A D Calibration ...

Page 135: ...40 386 1 5 18 Figure 5 2 Power Supply Output Module JMP1 NO NC JMP2 NO NC JMP5 NO NC JMP4 NO NC JMP3 NO NC JMP6 NC NO JMP7 NC NO CARRIER STOP CARRIER SEND OC 4 OC 3 AL 1 AL 2 OC 2 1612C68 Sheet 4 of 4 Sub 4 ...

Page 136: ...I L 40 386 1 5 19 Figure 5 3 Microprocessor Module JP6 JP5 JP3 JP4 Clock Battery 1613C55 Sheet 3 of 3 Sub 6 Variable Capacitor for Clock Calibration ...

Page 137: ... 20 Figure 5 4 Test Connection for AØ Ground Test Va Vb Vc If REL 301 302 Front View Rated dc Voltage Check Nameplate Install this jumper if dual polarizing not used 1 2 3 4 5 6 7 10 9 8 20 19 18 17 16 15 14 11 12 13 ...

Page 138: ... 21 Figure 5 5 Test Connection for BØ Ground Test Va Vb Vc If REL 301 302 Front View Rated dc Voltage Check Nameplate Install this jumper if dual polarizing not used 1 2 3 4 5 6 7 10 9 8 20 19 18 17 16 15 14 11 12 13 ...

Page 139: ... 22 Figure 5 6 Test Connection for CØ Ground Test Va Vb Vc If REL 301 302 Front View Rated dc Voltage Check Nameplate Install this jumper if dual polarizing not used 1 2 3 4 5 6 7 10 9 8 20 19 18 17 16 15 14 11 12 13 ...

Page 140: ...I L 40 386 1 5 23 Figure 5 7 Test Connection for AØ Ground Test Dual Polarizing Va Vb Vc If REL 301 302 Front View Rated dc Voltage Check Nameplate Ip 1 2 3 4 5 6 7 10 9 8 20 19 18 17 16 15 14 11 12 13 ...

Page 141: ...d T3 ø 2 00 sec Zone3 G Disabled T3 G 2 50 sec Zone 3 Forward Dir Ang Pos 75 Ang Zero 75 Z0L Z1L 3 0 Low V 60 Volts Low Iø 0 50 amps IM 0 50 amps 3IOs 0 50 amps 3IOm 0 50 amps Inst ø Disabled Inst G Disabled OS Block NO OSOT 4000 sec OS Inner 15 00 Ohms OS Outer 15 00 Ohms Dir Type Zero Sequence GB Type Disabled GB Pickup 0 50 amps GBT Curve 24 GB Dir YES CIF Trip NO LL Trip NO LOP Blk NO LOI Blk ...

Page 142: ...G Type Definite Time T2G Time 1 50 sec Zone3 ø Disabled T3 ø 2 00 sec Zone3 G Disabled T3 G 2 50 sec Zone 3 Forward Dir Ang Pos 75 Ang Zero 75 Z0L Z1L 3 0 Low V 60 Volts Low Iø 0 50 amps IM 0 50 amps 3IOs 0 50 amps 3IOm 0 50 amps Inst ø Disabled Inst G Disabled OS Block NO OSOT 4000 sec OS Inner 15 00 Ohms OS Outer 15 00 Ohms Dir Type Zero Sequence GB Type Disabled GB Pickup 0 50 amps GBT Curve 24...

Page 143: ...Power Supply Module Schematic 1357D14 Power Supply Module Assembly 1612C68 1 2 3 4 CT Module Schematic 1503B32 CT Module Assembly 1612C79 1 2 VT Module Schematic 1503B33 VT Module Assembly 1612C80 1 2 Microprocessor Module Schematic 1357D38 1 2 Microprocessor Module Assembly 1613C55 1 2 3 Display Module MMI Schematic 1613C76 Display Module MMI Assembly 1613C69 1 2 Reclosing Module Schematic 1614C1...

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