Section 6
Supervision functions
6.1
Circuit breaker condition monitoring 52CM
6.1.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Circuit breaker condition monitoring
SSCBR
CBCM
52CM
6.1.2
Function block
A070795-ANSI V3 EN
Figure 176:
Function block
6.1.3
Functionality
The circuit breaker condition monitoring function 52CM is used to monitor different
parameters of the circuit breaker. The breaker requires maintenance when the number of
operations has reached a predefined value. For proper functioning of the circuit breaker,
it is essential to monitor the circuit breaker operation, spring charge indication, breaker
wear, travel time, number of operation cycles and accumulated energy. The energy is
calculated from the measured input currents as a sum of I
y
t values. Alarms are generated
when the calculated values exceed the threshold settings.
1MRS240050-IB C
Section 6
Supervision functions
REF615R
345
Technical Manual
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