GE Multilin 369

4–44 369 MOTOR MANAGEMENT RELAY – QUICKSTART GUIDE
S8 POWER ELEMENTS CHAPTER 4: KEYPAD SETPOINTS
If the 369 is applied on a synchronous motor, it is desirable not to trip or alarm on power
factor 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 power
factor trip and alarm elements will be active. Once the power factor is less than the lag
level, for the specified delay, a trip or alarm will occur indicating lag condition.
The power factor alarm can be used to detect loss of excitation and out of step for a
synchronous motor.
4.6.4 Positive Reactive Power
PATH: S8 POWER ELEMENTS ØØØ POSITIVE REACTIVE POWER
LAG POWER FACTOR
ALARM DELAY: 1.0s
Range: 0.1 to 255.0 s in steps of 0.1
LAG POWER FACTOR
ALARM EVENTS: Off
Range: Off, On
LAG POWER FACTOR
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2 or combinations
LAG POWER FACTOR
TRIP LEVEL: 0.80
Range: 0.05 to 0.99 in steps of 0.01
LAG POWER FACTOR
TRIP DELAY: 1.0s
Range: 0.1 to 255.0 s in steps of 0.1
POSITIVE REACTIVE
POWER (kvar)
BLOCK +kvar ELEMENT
FROM START: 1 s
Range: 0 to 5000 s in steps of 1
POSITIVE kvar
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS:
Alarm
Range: None, Alarm, Aux1, Aux2 or combinations
POSITIVE kvar ALARM
LEVEL: 10 kvar
Range: 1 to 25000 kvar in steps of 1
POSITIVE kvar
ALARM DELAY: 1.0 s
Range: 0.1 to 255.0 s in steps of 0.1
POSITIVE kvar
ALARM EVENTS: Off
Range: Off, On
POSITIVE kvar
TRIP:
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2 or combinations
POSITIVE kvar TRIP
LEVEL: 25 kvar
Range: 1 to 25000 kvar in steps of 1