Circuit-Breaker Condition Monitoring Sscbr - ABB RELION Series Technical Manual

1MRS758755 A
Section 7
7.1
7.1.1
7.1.2
7.1.3
7.1.4
REC615 and RER615
Technical Manual
Condition monitoring functions

Circuit-breaker condition monitoring SSCBR

Identification
Function description
Circuit-breaker condition monitoring
Function block
Functionality
The circuit-breaker condition monitoring function SSCBR is used to monitor different
parameters of the circuit breaker. The breaker requires maintenance when the number
of operations has reached a predefined value. The energy is calculated from the
measured input currents as a sum of I
calculated values exceed the threshold settings.
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 "On" and "Off". The
operation counters are cleared when Operation is set to "Off".
The operation of SSCBR can be described with a module diagram. All the modules in
the diagram are explained in the next sections.
Condition monitoring functions
IEC 61850 IEC 60617
identification identification
SSCBR CBCM
y
t values. Alarms are generated when the
Section 7
ANSI/IEEE C37.2
device number
CBCM
535