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2.10 Circuit-breaker failure
protection CBFP (50BF)
2 Protection functions
Technical description
74
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VM265.EN011
Parameters of the circuit breaker failure stage CBFP (50BF)
Parameter
Value
Unit
Description
Note
Status
-
Blocked
Start
Trip
Current status of the stage
F
F
SCntr
Cumulative start counter
C
TCntr
Cumulative trip counter
C
Force
Off
On
Force flag for status forcing for
test purposes. This is a
common flag for all stages and
output relays, too.
Automatically reset by a 5-
minute timeout.
Set
CBrelay
1
2
The supervised output relay
*)
.
Relay T1
Relay T2
Set
t>
s
Definite operation time.
Set
For details of setting ranges see chapter 9.3.
Set = An editable parameter (password needed)
C = Can be cleared to zero
F = Editable when force flag is on
*) This setting is used by the circuit breaker condition monitoring, too. See
chapter 3.4.
Recorded values of the latest eight faults
There are detailed information available of the eight latest
faults: Time stamp and elapsed delay.
Recorded values of the circuit breaker failure stage (8 latest
faults) CBFP (50BF)
Parameter
Value
Unit Description
yyyy-mm-dd
Time stamp of the recording, date
hh:mm:ss.ms
Time stamp, time of day
EDly
%
Elapsed time of the operating time
setting. 100% = trip
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