Siemens SIPROTEC 7SS523 V3.2

Backup Breaker Failure Protection in the Bay Unit
201
7SS52 V4 Manual
C53000-G1176-C182-1
5.18.4 List of Information from the Central Unit
5.18.5 Settings of the Bay Unit
FNo. Alarm Comments
10490
>Block BF of BU >Blocking back-up breaker fail.prot. BU
10491 Block BF of BU
Blocking back-up breaker fail.prot. BU
10492 Blkd BF of BU
Back-up breaker fail.prot. of BU blocked
10493 >Block O/C BU
>Blocking O/C protection of BU
10494 Block O/C BU
Blocking O/C protection of BU
10495 Blkd O/C BU
O/C protection of BU blocked
Addr. Setting Title Setting Options Default Settings Comments
3901 BackUp CBF ON
OFF
OFF State of back-up circuit breaker
failure protection function
3911 B.U.CBF-I 0.10 .. 4.00 I/In 0.50 I/In Current threshold of back-up
breaker failure protection
3912 B.U.CBF-T 0.06 .. 60.00 s; +* 0.12 s Time delay of the back-up
breaker failure protection