Backup Breaker Failure Protection in the Bay Unit
207
7SS52 V4 Manual
C53000-G1176-C182-3
5.18.3 Settings of the Central Unit
5.18.4 List of Information from the Central Unit
5.18.5 Settings of the Bay Unit
Addr. Setting Title Setting Options Default Settings Comments
114
BF BI MODE 1-ch w/o sup
1-ch w sup
2-ch w/o sup
2-ch w sup
1-ch w sup Binary input mode / supervision
BF
115 BF OP MODE non existent
external
BZ unbalance
trip rep/unbal
I>query
trip rep/I>quer
BZ unbalance Operation mode BF
121 T-BF-mP 0.05 .. 10.00 s 0.25 s Time delay for BF with multi-pole
faults
124 T-BF CB fault 0.00 .. 10.00 s 0.10 s Time delay BF after CB fault
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
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