GE Multilin 850

CHAPTER 4: SETPOINTS PROTECTION
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 4–209
Figure 4-87: Auxiliary Undervoltage Protection logic diagram
894047A2.cdr
SETPOINTS
Auxiliary voltage (Vaux)
SETPOINT
FUNCTION: Disabled Trip
PICKUP:
AND
Operate Output Relay 1 (TRIP)
LED: PICKUP
LED: TRIP
Alarm
OR
OR
AND
Latched Alarm
AND
RUN
SETPOINTS
BLOCK : Off = 0
LED: ALARM /
LATCHED ALARM
RESET
Command
AND
S R
LATCH
Configurable
FlexLogic Operands
Aux UV 1(2) OP: Aux UV 1(2) PKP:
PICKUP DELAY: UNDERVOLTAGE CURVES:
Vx > PICKUP
SETPOINTS
MINIMUM VOLTAGE: Vx > MINIMUM
AND
SETPOINTS
Do Not Operate, Operate OUTPUT RELAYS 3 to 7
SETPOINTS
SIGNAL INPUT: NAME( Ax VT Bnk1-J2
889 only