GE 735

GE Power Management
735/737 Feeder Protection Relay iii
TABLE OF CONTENTS
6. TESTING
6.1 PROCEDURES
6.1.1 PRIMARY INJECTION TESTING.............................................................. 6-1
6.1.2 SECONDARY INJECTION TESTING........................................................ 6-1
6.1.3 COMMUNICATIONS TEST....................................................................... 6-1
6.1.4 PHASE CURRENT READING ACCURACY TEST ................................... 6-1
6.1.5 GROUND CURRENT READING ACCURACY TEST................................ 6-1
6.1.6 INSTANTANEOUS PHASE OVERCURRENT PICKUP LEVEL TEST...... 6-1
6.1.7 INSTANTANEOUS GROUND FAULT OVERCURRENT PICKUP LEVEL
TEST.......................................................................................................... 6-1
6.1.8 INSTANTANEOUS PHASE OVERCURRENT TIMING TEST................... 6-3
6.1.9 INSTANTANEOUS GROUND FAULT OVERCURRENT TIMING TEST .. 6-3
6.1.10 PHASE OVERCURRENT CURVE VERIFICATION .................................. 6-3
6.1.11 GROUND FAULT OVERCURRENT CURVE VERIFICATION.................. 6-3
6.1.12 POWER LOSS/RECOVER TEST.............................................................. 6-3
6.1.13 HI POTENTIAL TEST ................................................................................ 6-3
6.2 TEST RECORDS
6.2.1 735/737 TEST RECORD ........................................................................... 6-4
6.2.2 COMMUNICATIONS TEST....................................................................... 6-4
6.2.3 PHASE CURRENT READING ACCURACY TEST ................................... 6-4
6.2.4 GROUND CURRENT READING ACCURACY TEST................................ 6-4
6.2.5 INSTANTANEOUS PHASE OVERCURRENT PICKUP TEST.................. 6-5
6.2.6 INSTANTANEOUS GROUND OVERCURRENT PICKUP TEST.............. 6-5
6.2.7 INSTANTANEOUS PHASE OVERCURRENT TIMING TEST................... 6-5
6.2.8 INSTANTANEOUS GROUND FAULT OVERCURRENT TIMING TEST .. 6-5
6.2.9 PHASE OVERCURRENT CURVE VERIFICATION .................................. 6-6
6.2.10 GROUND FAULT OVERCURRENT CURVE VERIFICATION.................. 6-7
6.2.11 POWER FAIL/RECOVER TEST................................................................ 6-7
6.2.12 HI POTENTIAL TEST ................................................................................ 6-7
7. COMMISSIONING
7.1 SETTINGS TABLE
7.1.1 INSTALLATION INFORMATION ............................................................... 7-1
7.1.2 RELAY SETTINGS.................................................................................... 7-1
A. APPENDIX
A.1 OVERCURRENT PROTECTION SAMPLE CALCULATIONS
A.1.1 CHARACTERISTICS.................................................................................A-1
A.1.2 PHASE TIMED O/C PICKUP.....................................................................A-1
A.1.3 PHASE INSTANTANEOUS PICKUP.........................................................A-1
A.1.4 GROUND PICKUP.....................................................................................A-1
A.1.5 GROUND INSTANTANEOUS ...................................................................A-1
A.2 FEEDER DEDICATED TO A TRANSFORMER
A.2.1 CHARACTERISTICS.................................................................................A-2
A.2.2 PHASE TIMED O/C PICKUP.....................................................................A-2
A.2.3 PHASE INSTANTANEOUS .......................................................................A-2
A.3 DOs AND DON’Ts
A.3.1 CHECKLIST...............................................................................................A-3
A.4 WARRANTY INFORMATION
A.4.1 WARRANTY ..............................................................................................A-4