GE 339

6–176 339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
S6 MONITORING CHAPTER 6: SETPOINTS
Figure 6-84: Reactive Power Demand logic diagram
Apparent Power The Apparent Power Demand is monitored by comparing to a Pickup value. If the Apparent
Power Demand Pickup is ever equalled or exceeded, the relay can be configured to cause
an alarm or signal an output relay.
LED: PICKUP
Reactive Power Inputs
AN D
REACTIVE PWR DMD FUNCTION : Disabled Alarm Latched Alarm
OR
SETPOINTS
REACTIVE PWR DMD MEASUREMENT TYPE : Calculate Reactive Power Demand
SETPOINTS
REACTIVE PWR DMD REACTIVE POWER PICKUP : |Q Demand | ≥PICKUP RUN
ReactvPwr Dmd PKP
AND AN D
Command
RESET
OR
LED: ALARM
REACTIVE PWR DMD THERMAL 90% RESPONSE TIME : REACTIVE PWR DMD TIME INTERVAL :
Three-Phase
Reactive Power (Q)
SETPOINTS
FlexLogic Operands
S
LATCH
Set-
Dominant
R
SETPOINT
Do Not Operate, Operate
OUTPUT RELAY X
SETPOINTS
BLOCK 1: Off = 0 BLOCK 2: Off = 0 BLOCK 3: Off = 0
OR
898848A1.CDR