ABB RELION 620 Series Technical Manual page 568

Section 6
Supervision functions
6.1.4
562
The function contains a blocking functionality. It is possible to block the function outputs,
if desired.
Operation principle
The circuit breaker condition monitoring function includes different metering and
monitoring sub-functions. The functions can be enabled and disabled with the Operation
setting. The corresponding parameter values are "Enable" and "Disable". The operation
counters are cleared when Operation is set to "Disable".
The operation of the functions can be described with a module diagram. All the modules
in the diagram are explained in the next sections.
1MAC504801-IB E
620 series ANSI
Technical Manual