Name Type Values (Range) Unit Description
NOOPRDAY INTEGER - - The number of days CB
has been inactive
CBLIFEL1 INTEGER - - CB Remaining life phase
L1
CBLIFEL2 INTEGER - - CB Remaining life phase
L2
CBLIFEL3 INTEGER - - CB Remaining life phase
L3
IACCL1 REAL - - Accumulated currents
power (Iyt), phase L1
IACCL2 REAL - - Accumulated currents
power (Iyt), phase L2
IACCL3 REAL - - Accumulated currents
power (Iyt), phase L3
14.17.7 Operation principle
The circuit breaker condition monitoring function includes a number of metering and
monitoring subfunctions. The functions can be enabled and disabled with the
Operation setting. The corresponding parameter values are “On” and “Off”. The
operation counters are cleared when Operation is set to “Off”.
The operation of the functions can be described by using a module diagram. All the
modules in the diagram are explained in the next sections.
1MRK 502 048-UEN A Section 14
Monitoring
563
Technical manual
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