GE 889 - Page 272

4–142 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
PROTECTION CHAPTER 4: SETPOINTS
Figure 4-50: Loss of Excitation Logic Diagrams: (b) circle 2
CIRCLE2 DIAMETER
CIRCLE2 OFFSET
SETTING
SETTING
Enabled=1
Disabled=0
J- Slot Measurements
I1
V1
FLEXLOGIC OPERANDS
FLEXLOGIC OPERAND
LOE Circle 2 PKP
LOE Circle 2OP
0
I 1 >0. 05 x CT
RUN
COMPARATOR
CIRCLE2 UV
SUPERVISION
TIMER
20ms
0
SETPOINTS
CIRCLE2 FUNCTION: Disabled= 0
Trip
Operate Output Relay 1( TRIP)
Alarm
OR
OR
AND
Latched Alarm
AND
BLOCK Off = 0
LED: ALARM
RESET
Command
AND
S R
LATCH
Configurable
LED: TRIP
Set Dominant
SETPOINTS
AND
OR
IV1 | < PKP
RUN
SETTING
AND
SETTING
RUN
t
pkp
CIRCLE2 DELAY
CIRCLE2
UV SUPERVISION
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