GE SPM Series, Instruction Manual

Page: 58 / 126

5-
2
SPM Synchronous Motor Protection & Control GE Power Management
5.2 SETPOINTS MENU 5 SETPOINTS
5
5.2 SETPOINTS MENU 5.2.1 POWER FACTOR TRIP
FUNCTION:
The
PF TRIP
setpoint represents the value of lagging power factor that causes a trip or resynchronizing attempt
during motor operation. For example, if the trip power factor is set at 0.85 lagging (–0.85), the SPM trips if the
power factor falls below 0.85 for a time longer than the
PF DELAY
setpoint.
MOTOR TYPE:
Collector-Ring and Brushless
NOTE:
The SPM automatically suppresses the power factor trip element until the programmed
FCX DELAY
times out.
5.2.2 POWER FACTOR DELAY
FUNCTION:
The PF DELAY setpoint represents the elapsed time delay after the power factor dips below the PF TRIP setpoint
(or after the line current remains greater than four times the FL AMPS setpoint) before the SPM initiates tripping
action for power factor trip (or pull-out trip).
MOTOR TYPE:
Collector-Ring and Brushless
5.2.3 POWER FACTOR SUPRESSION
FUNCTION:
Power factor suppression is used to inhibit
PF TRIP
or PULL-OUT trip action when the line current is less than
the setpoint percentage of the full-load current (
FL AMPS
) setpoint.
MOTOR TYPE:
Collector-Ring and Brushless
PF TRIP: –0.60
ENTER to modify
Range: –0.60 to 1.00
Step: 0.01
PF DELAY: 1.0 s
ENTER to modify
Range: 0.1 to 10.0 seconds
Step: 0.1
PF SUPP: 6% FLC
ENTER to modify
Range: 6%, 50% FLC