Siemens SIPROTEC 7SS523 V3.2 Manual page 353

Distributed busbar/ breaker failure protection
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*) Table A-28
"Marshalling TRIP
RELAY" show the default
assignment of relay K1 - K5.
Legend:
BI:
Binary Input
K:
Trip relay
CB:
Circuit breaker
M:
Alarm reley
BF:
Breaker failure
Figure A-5 Connection diagram bay unit 7SS523
Connection Diagrams
7SS52 V4 Manual
C53000-G1176-C182-1
337

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