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4.7. Function 52. Circuit Breaker monitoring
This function allows the status of the circuit breaker to be monitored and preventive maintenance
to be performed, for which the following parameters need to be configured:
Group Description Minimum Maximum Step Unit Default
52
Circuit breaker monitoring
Maximum number of openings 1 10000 1 - 500
Maximum accumulated amperes 1 100000 1 M(A 2 ) 1000
Opening time 0.02 30,0 0.01 s 0.10
Closing time 0.02 30,0 0.01 s 0.10
Maximum repeated openings 1 10000 1 - 3
Time of maximum repeated openings 1.00 300,0 0.01 min 9.00
NOTE:
The “Maximum accumulated amperes” adjustment units are M(A²) (square mega
amperes) whilst the “Accumulated amperes counter” units are K(A²) (square kilo amperes).
It is also necessary to assign the logical inputs 52a and/or 52b to a physical input.
This function provides information about the circuit breaker status and if any maintenance alarm
has been activated.
The following statuses are associated with this function:
Function Status Description
52
Start
Energized/Deenergized
These are the different statuses of the circuit breaker automatic control
Error
Open
Opening time
Opening error
Closed
Closing time
Closing error
No. of configured openings
exceeded Activated if the counter that measures the number of openings exceeds the
"Maximum number of openings" setting
No. of configured
accumulated (l2t) amps
exceeded
Activated if the accumulated amps counter exceeds "Maximum accumulated
amps" setting
Repeated Trips
Activated the number of openings exceeds the setting in "Maximum
repeated openings" for the time set in "Time of maximum repeated
openings"