GE Multilin 350 Series

6–138 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
S5 INPUTS/OUTPUTS CHAPTER 6: SETPOINTS
Figure 48: Relay 1 "TRIP" logic diagram
TRIP (Protection, Controls)
Trip request
SETPOINT (BREAKER)
52b CONTACT Contact input
SETPOINT (BREAKER)
52a CONTACT Contact input
AND
OR
52b contact (Breaker Open = 1)
AND
52a contact (Breaker Close = 1)
Breaker Open
OR
At least one
contact
programmed
AND
OR
TRIP
No feedback
change
OR
timed reset
SETPOINT (BF)
BF FUNCTION: Disabled = 0
Latched Alarm Alarm
BF TIME DELAYS
SETPOINT (BF)
RUN
OR
OR
OR
AND
AND
Trip Output Seal-In time
SETPOINT
t
RST
AND
LED: TRIP
OR
Local Open (Relay Keypad)
Remote Open
Relay ( Ready = 1)
RESET (Relay Keypad)
RESET (Communications)
RESET (Input)
Breaker Control
OR
LED: TRIP
AND
OR
timer
100 ms
RUN
OR
t
RST
SETPOINT
BLOCK TRIP RLY Disbaled = 0 (Selected Input, ON
=1)
OR
timer
2 sec
LED: BREAKER OPEN
898775.cdr
TRIP
Operate Output Relay 1
TRIP
To Breaker Failure
(TRIP)
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