5.26
SEL-700G Relay
Instruction Manual
Date Code 20170814
Metering and Monitoring
Breaker Monitor
Figure 5.24
Input INxxx Connected to Trip Bus for Breaker Monitor
Initiation
If the SEL
OGIC
control equation breaker monitor initiation setting is set:
BKMONn =
INxxx
then the SEL-700G breaker monitor sees all trips.
If output contact
OUTxxx
asserts, energizing the trip bus, the breaker monitor
deems it a relay-initiated trip. This is because, when BKMONn is newly
asserted (input
INxxx
energized), the TRIPn Relay Word bit is asserted. Thus,
the current and trip count information is accumulated under relay-initiated
trips (Rly Trips).
If the control switch trip (or some other external trip) asserts, energizing the
trip bus, the breaker monitor deems it an externally initiated trip. This is
because, when BKMONn is newly asserted (input
INxxx
energized), the TRIPn
Relay Word bit is deasserted. Thus, the current and trip count information is
accumulated under externally initiated trips (Ext Trips).
TC
CS/T
(Control
Switch Trip)
Other
External
Trips
OUTxxx
= TRIPn
TRIP
COIL
52A
INxxx
Trip Bus
SEL-700G
(+)
(—)
Summary of Contents for SEL-700G Series
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