Functions
128
7SS52 V4 Manual
C53000-G1176-C182-3
5.3.6 Setting Notes
BF BI MODE The parameter BF BI MODE (XX14/CU) is used to select the supervision mode for
initiation of the breaker failure protection.
With setting 1-ch w/o sup, the breaker failure protection will be initiated only by the
feeder-selective binary input, without time supervision.
With setting 1-ch w sup, the breaker failure protection will be initiated only by the
feeder-selective binary input, with time supervision.
With setting 2-ch w/o sup, the breaker failure protection will be initiated after eval-
uation of an additional binary input ("CBF release"), without time supervision.
With setting 2-ch w sup, the breaker failure protection will be initiated after evalua-
tion of an additional binary input ("CBF release"), with time supervision.
For testing purposes, Siemens recommends to set this parameter to 1-ch w/o sup
or 2-ch w/o sup.
Note
The operating modes "
... without supervision” are recommended for test pur-
poses only.
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