GE 845 - Page 384

4–256 845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
MONITORING CHAPTER 4: SETPOINTS
Figure 4-103: Trip Circuit Monitoring Diagram
892779A1.cdr
SETPOINT
TCM FUNCTION: Disabled Alarm
OR
OR
AND
Latched Alarm
LED: ALARM /
LATCHED ALARM
RESET
Command
AND
S R
LATCH # 1
Set-
Dominant
Configurable
FlexLogic Operand
Trip Coil Mon 1 OP:
SETPOINTS
Do Not Operate , Operate OUTPUT RELAY
3 (X)
SETPOINT
TCM BLOCK : Off = 0
AND
SETPOINT
TCM PICK
-
UP DELAY:
SETPOINT
TCM BYPASS BKR STATE
:
Disabled = 0
FlexLogic Operand
Trip Coil 1 Mon PKP:
OR
t PKP
t RST
TCM DROP-OUT DELAY:
SETPOINT
TCM BKR STATUS CLOSED: Off = 0
AND
OUTPUT RLY #1
“TRIP” OPERATE
OUTPUT RLY #1
MONITORING VOLTAGE <
THRESHOLD