TM 9-6115-729-24
0085
REPROGRAMMING OR VERIFYING GSC SETPOINTS - Continued
Table 5. OP5-1 Protective Relaying Setpoint Programming - Continued.
FACTORY
SETPOINTS
60 Hz (50 Hz) 3
DESCRIPTION
RANGE OF VALUES
DEFAULT
P120 Generator Underfrequency Alarm
30-50 Hz, for 50 Hz
48 Hz
57 Hz/48 Hz
Threshold: Frequency GSC uses to
generator
issue an underfrequency alarm.
36-60 Hz, for 60 Hz
57 Hz
generator
240-400 Hz, for 400 Hz
378 Hz
generator
0 through 120 seconds 2 in
P121 Generator Underfrequency Alarm
10 sec
10 sec
Time Delay: Amount of time GSC waits
increments of 1
before issuing an underfrequency alarm.
P122 Generator Underfrequency
0 disabled
1
0
Shutdown Enable: GSC enables or
1 enabled
disables the generator underfrequency
shutdown function.
P123 Generator Underfrequency
30-50 Hz, for 50 Hz
45 Hz
54 Hz/45 Hz
Shutdown Threshold: Frequency GSC
generator
uses to issue an underfrequency
36-60 Hz, for 60 Hz
54 Hz
shutdown.
generator
240-400 Hz, for 400 Hz
360 Hz
generator
0 through 120 seconds 2 in
P124 Generator Underfrequency
15 sec
15 sec
Shutdown Time Delay: Amount of time
increments of 1
GSC waits before issuing an
underfrequency shutdown.
P125 Generator Reverse Power
0 disabled
1
1
Shutdown Enable: GSC enables or
1 enabled
disables the generator reverse power
shutdown function.
P126 Generator Reverse Power
0 through 20% of rated
15%
17%
Shutdown Threshold: Level of reverse
power in increments of 1%
power GSC uses to issue a reverse
power shutdown.
____________
2
When programmed to 0 seconds, the actual time is from 0.5 to 1.0 seconds.
3
Setpoints to be changed from factory defaults to 100 TQG setpoints at switch gear supplier.
0085-21
