CHAPTER 7: MAINTENANCE
M3 BREAKER MAINTENANCE
350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
7–9
Figure 7: Close coil monitoring logic diagram
Breaker trip counter
When the total number of breaker trips detected reaches the TRIP COUNTER LIMIT
setpoint, an output will occur.
The following path is available using the keypad. For instructions on how to use the
keypad, please refer to
Chapter 3 - Working with the Keypad
.
PATH
:
MAINTENANCE > M3 BKR MAINTENANCE > BKR TRIP COUNTER
SETPOINT
CLOSE
COIL
FUNCTN:
Disabled
=
0
Latched
Alarm
Event
Recorder
T
ransient
Recorder
Alarm
OR
OR
AND
SETPOINT
:
Operate
output
relays
upon
selection
OUTPUT
RELA
Y
4
OUTPUT
RELA
Y
5
OUTPUT
RELA
Y
6
OUTPUT
RELA
Y
3
Close
Coil
Montr
OP
Message
Close
Coil
current
above
threshold
AND
OR
52a/b
INPUTS
Breaker
Open
Close
From
output
relay
2
CLOSE
SETPOINT
BYP
ASS
BKR
ST
A
T
E
Enabled
=
1
Disable
=
0
AND
CLOSE
COIL
DELA
Y
:
SETPOINT
t
PKP
LED:
MAINTENANCE
Close
Coil
Montr
PKP
Message
LED:
ALARM
RESET
Command
AND
S
R
LA
TCH
898021.cdr