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
12.17.7
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 505 288-UEN A
Section 12
Monitoring
403
Technical manual
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