Reactive Power - GE 469 Instruction Manual

5.11.3 Reactive Power

REACTIVE
5–82
PATH: SETTINGS S10 POWER ELEMENTS
[
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
If the 469 is applied on a synchronous motor, it is desirable not to trip or alarm on kvar until
the field has been applied. Therefore, this feature can be blocked until the motor comes up
to speed and the field is applied. From that point forward, the kvar trip and alarm elements
will be active. Once the kvar level exceeds either the positive or negative level, for the
specified delay, a trip or alarm will occur indicating a positive or negative kvar condition.
The reactive power alarm can be used to detect loss of excitation and out of step.
REACTIVE POWER
BLOCK kvar ELE-
MENT
REACTIVE POWER
ALARM: Off
ASSIGN ALARM
RELAYS:
POSITIVE kvar
ALARM
NEGATIVE kvar
ALARM
REACTIVE POWER
ALARM
REACTIVE POWER
ALARM
REACTIVE POWER
TRIP: Off
ASSIGN TRIP
RELAYS:
POSITIVE kvar
TRIP
NEGATIVE kvar
TRIP
REACTIVE POWER
TRIP
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
Range: 0 to 5000 s in steps of 1
Range: Off, Latched, Unlatched
Range: Alarm, Alarm & Auxiliary2,
Alarm & Aux2 & Aux3, Alarm &
Auxiliary3, Auxiliary2, Aux2 &
Aux3, Auxiliary3
Range: 1 to 25000 kvar in steps of 1
Range: 1 to 25000 kvar in steps of 1
Range: 0.2 to 30.0 s in steps of 0.1
Range: On, Off
Range: Off, Latched, Unlatched
Range: Trip, Trip & Auxiliary2, Trip &
Aux2 & Aux3, Trip & Auxiliary3
Range: 1 to 25000 kvar in steps of 1
Range: 1 to 25000 kvar in steps of 1
Range: 0.2 to 30.0 s in steps of 0.1