GE Industrial Solutions Galaxy Verification - Manual (Page 33)

Galaxy Power System Verification Procedures
Issue 3 January 2008 Galaxy SC Controller Performance Verification Procedures 2 - 21
Fuse Alarm Test
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 of any breaker together.
For GPS cabinets, fuse alarms may be simulated at the BNL1 or BNL7
alarm card by strapping FAJ on these cards to the hot bus (P4-1 for
BNL1, P5-6 for BNL7).
The DIST and MAJ LEDs and Power Major and MJF alarm relays will
be active. Alarms should be tested in each distribution bay of the plant
to verify the integrity of the alarm bus throughout the plant. If the
distribution bays are equipped with “Bay Fuse Alarm” indicating LEDs,
also verify that this LED activates during these tests for the bay in which
the alarm originates (and not in any other).
For GPS cabinets, the alarm lamp of the cabinet containing the
controller will always activate, in addition to the cabinet containing the
alarm.
Minor Fuse Alarm Refer to Figures 2-1 and 2-3, respectively, for location of the BJF fuse
termination board in the SC and SCF controllers.
Minor Fuse Alarm may be tested by placing a blown fuse in the alarm
fuse position of the plant Capacitor Charge circuit (if equipped) or by
inserting a paper clip into the alarm indicating hole of its fuse holder.
Alternately, replace one of the unused regulation fuses of the BJF fuse
termination board with a blown GMT type fuse. In either case, the MIN
and either DIST or RECT panel LEDs will activate, along with the
Power Minor and MNF alarm relays.