6–104
350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
S3 PROTECTION
CHAPTER 6: SETPOINTS
Figure 35: Auxiliary Overvoltage logic diagram
Auxiliary
V
oltage
Input
(associated
setpoints)
SETPOINTS
SETPOINT
AUX
OV
FUNCTION:
Disabled
=
0
Latched
Alarm
AUX
OV
PICKUP:
AND
Operate
Output
Relay
1
(TRIP)
Event
Recorder
LED:
TRIP
Alarm
OR
OR
AND
SETPOINTS
Operate
output
relays
upon
selection
OUTPUT
RELA
Y
4
OUTPUT
RELA
Y
5
OUTPUT
RELA
Y
6
OUTPUT
RELA
Y
3
T
rip
AND
T
rip
(T
o
Breaker
Failure)
SETPOINTS
BLOCK
1:
O
ff=0
BLOCK
2:
O
ff=0
BLOCK
3:
O
ff=0
OR
RUN
Aux
V
LED:
PICKUP
Aux.
OV
T
rip
(Alarm)
-
PKP
,
O
P
,
DPO
Message
V
>
PICKUP
AUX
OV
DELA
Y:
SETPOINT
t
PKP
LED:
ALARM
RESET
Command
AND
S
R
LA
TCH
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