GE Industrial Solutions Galaxy Verification - Manual (Page 28)

Galaxy Power System Verification Procedures
2 - 16 Galaxy SC Controller Performance Verification Procedures Issue 3 January 2008
Battery on Discharge Alarm Test
Introduction If the BD alarm was observed during the High Voltage Shutdown test
this test can be disregarded.
If the BD alarm was not observed during the HVSD test, perform the
following test procedure:
Procedure
Step Action
1 From the front panel follow the path <MENU> → CONFIG
→ THRLD and observe the setting of the BD (FLOAT)
threshold.
2 Switch some of the rectifiers to STANDBY or OFF, until the
remaining rectifiers go into a current limit and plant voltage
drops below BD (FLOAT) threshold. Observe the active BD
and MAJ LEDs and asserted PMJ and BD relays.
3 Restart the rectifiers to retire alarms and return the plant
voltage to float.
Another way to perform the test is to increase the BD threshold above
the normal plant float voltage, using the following steps:
Step Action
1 From the front panel follow the path <MENU> → CONFIG
→ THRLD and observe the setting of the BD (FLOAT)
threshold.
2 Increase the BD threshold value above the float voltage.
Observe the active BD and MAJ LEDs and asserted PMJ
and BD relays.
3 Reset the BD alarm to the original setting.