GE DBF, Instructions Manual

Page: 42 / 65

6. ACCEPTANCE TESTS
GEK-106168E DBF Breaker Failure Protection 35
6.9.3 INTERNAL ARC TEST
1. Change setpoint GENERAL/FUNCTION PERMIT/50BF 3P FUNCTION to NO PER.
2. Change setpoint TABLE 1/INTERNAL ARC SETTINGS/INT ARC TIMER to 2s.
3. Energize digital input CC4 52/b A
4. Apply 2A to terminals A1-A2 (phase A).
5. Check that after INT ARC TIMER time delay, contact C2-D2 is closed.
6. Repeat steps 3, 4 and 5 for phases B (terminals B1-B2) with digital input CC5 52/b B and C (terminals A3-A4)
with digital input CC6 52/b C.
6.9.4 3P NO I FUNCTION
1. Change setpoint GENERAL/FUNCTION PERMIT/50BF 1P FUNCTION to NO PER.
2. Change setpoint GENERAL/FUNCTION PERMIT/50BF 3P FUNCTION to NO PER.
3. Change setpoint GENERAL/FUNCTION PERMIT/3P No INT FUNCT to PER.
4. Change setpoint TABLE 1/50BF SETTINGS/Nº OUTPUT STAGES to 1
5. Change setpoint TABLE 1/50BF SETTINGS/ 3P NO I TIMER T3 to 1s
6. Change setpoint TABLE 1/50BF SETTINGS/LOW LOAD 2P to PER.
7. Energize digital input CC7 3P BF INITIATE. If the relay has not an expansion board, energize CC1 PHASE A
BF INITIATE and CC2 PHASE B BF INITIATE.
8. Check that after 3P NO I TIMER T3 (2s), the following contacts are closed:
C4-D4 A12-B12
C5-D5 C1-D1
C6-D6 C7-D7
9. If the relay is provided with an expansion board, check that also the following contacts are closed:
E1-F1 E2-F2
E3-F3 E4-F4
E5-F5 E6-F6
6.9.5 NEUTRAL OVERCURRENT UNIT TEST
1. Change setpoint GENERAL/FUNCTION PERMIT/50BF 1P FUNCTION to NO PER.
2. Change setpoint GENERAL/FUNCTION PERMIT/50BF 3P FUNCTION to NO PER.
3. Change setpoint GENERAL/FUNCTION PERMIT/3P No INT FUNCT to PER.
4. Change setpoint TABLE 1/50BF SETTINGS/LOW LOAD 2P to PER.
5. Energize digital inputs CC4, CC5 and CC6 (52b inputs).
6. Energize digital inputs CC7 3P BF INITIATE. If the relay has not an expansion board, energize digital inputs
CC1 PHASE A BF INITIATE and CC2 PHASE B BF INITIATE.
7. Apply 2A to terminals B3-B4 (neutral).