GE Industrial Solutions GPS4827 - Manual (Page 82)

Galaxy Power System GPS4827
80
The plant voltage returns to it’s original value
Power Major alarm (PMJ) retires
RECT and MAJ LEDs are extinguished
Rectifier Observations:
Rectifier is operating normally
Battery on Discharge Alarm
STEP Action for Testing the Battery on Discharge Alarm
NOTE: If the BD alarm was observed during the High Voltage Shutdown test
this test can be disregarded.
1. From the front panel follow the path(Voltage Alarms):
2. Note the setting of the Battery on Discharge Threshold. ________
3. With a dummy load added to the plant, operate all rectifiers to STBY
until the plant voltage drops below the BD (FLOAT) threshold.
4. Controller Observations:
PMJ Alarm is active
BD and MAJ LEDs are illuminated
5. Turn on all rectifiers
6. Controller Observations:
PMJ Alarm retires
BD and MAJ LEDs are extinguished
System Voltage is normal
Rectifier Fail Alarm
The RFA alarm was observed during the High Voltage Shutdown Test so no separate
test is required.
Major Fuse Alarm
Major Fuse Alarm may be tested by placing a blown fuse in the alarm fuse position of
any distribution fuse position in the plant or by inserting a paper clip into the alarm
indicating hole of its fuse holder.
For distribution circuit breakers, temporarily connect the pins 8 and 9 of any KS22010
or KS22012 style circuit breakers together. This is accomplished on the ED83143-30
circuit breaker panels by shorting the (-) panel bus to pin 1 on the P4 connector of its
BNL1 alarm board.
Observation: