Eaton EMR-4000, Инструкция по установке, эксплуатации и обслуживанию, Страница: 748 / 960

EMR-4000 IM02602009E
Setting Group Parameters of the BF
In order to prevent a faulty activation of the BF Module, the pickup (alarm)
time must be greater than the sum of:
Operating time of the protective relay
+The close-open time of the breaker (please refer to the technical data of
the manufacturer of the breaker);
+Drop off time (current- or position indicators)
+Security margin.
Parameter Description Setting range Default Menu path
Function Permanent activation or deactivation of module/element. Inactive,
Active
Inactive [Protection Para
/<1..4>
/Supervision
/BF]
ExBlo Fc Activate (allow) or inactivate (disallow) blocking of the
module/element. This parameter is only effective if a
signal is assigned to the corresponding global protection
parameter. If the signal becomes true, those
modules/elements are blocked that are parameterized
"ExBlo Fc=active". Inactive,
Active
Inactive [Protection Para
/<1..4>
/Supervision
/BF]
I-BF > Breaker Failure Alarm will be initiated if this threshold is
still exceeded after the timer has expired (50 BF).
Only available if: Scheme50BF = Or Scheme = 50BF and
CB Pos
0.02 - 4.00In 0.02In [Protection Para
/<1..4>
/Supervision
/BF]
t-BF If the delay time is expired, an BF alarm is given out. 0.00 - 10.00s 0.20s [Protection Para
/<1..4>
/Supervision
/BF]
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