Siemens SIPROTEC 7SS523 V3.2 Manual page 398

Distributed busbar/ breaker failure protection
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Appendix
A.12 Group Alarms - Bay Unit
Group Alarm
FNo.
Description
140
General internal failure of device
161
Measured value supervision of cur-
rents
501
General fault detection of device
511
General trip of device
382
FNo.
161
Only existing alarm is 161.
161
Standard-Group Alarms for all Measured Value
Supervisions. On BU the summation current will be
monitored.
1455
Back-up breaker fail. prot.: fault det.
1761
General fault detection O/C
7630
Busbar protection: Fault detected
1471
Trip by back-up breaker failure prot.
1791
O/C general trip command
7631
Busbar protection: Trip in phase L123
7632
CBF protection: Trip repeat phase L123
7633
CBF protection: Trip repeat phase L1
7634
CBF protection: Trip repeat phase L2
7635
CBF protection: Trip repeat phase L3
7643
CBF protection: Trip L123
7644
End fault protection: Trip phase L123
Alarm
Logical function
7SS52 V4 Manual
C53000-G1176-C182-1

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