GE 889 - Page 435

CHAPTER 4: SETPOINTS MONITORING
889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–305
Figure 4-126: Real Power Demand logic diagram
LED: PICKUP
Real Power Inputs
SETPOINTS
BLOCK : Off=0
AN D
SETPOINTS
REAL PWR DEMAND FUNCTION : Disabled Alarm Latched Alarm Configurable
OR
SETPOINTS
REAL PWR DEMAND MEASUREMENT TYPE : Calculate Real Power Demand
SETPOINTS
REAL PWR DEMAND REAL POWER PICKUP : P Demand = PICKUP RUN
RealPwr Dmd PKP
AN D AND
Command
RESET
OR
LED: ALARM
REAL PWR DEMAND THERMAL 90% RESPONSE TIME : REAL PWR DEMAND TIME INTERVAL :
Three-Phase
Real Power (P)
SETPOINTS
OUTPUT RELAYS X Do Not Operate , Operate
FlexLogic Operands
S
LATCH
Set-
Dominant
R
89
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