7 Condition monitoring functions
7.1 Circuit breaker condition monitoring SSCBR
7.1.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE
C37.2 device
number
Circuit-breaker condition moni-
toring
SSCBR CBCM CBCM
7.1.2 Function block
7.1.3 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
y
t values. Alarms are generated
when the calculated values exceed the threshold settings.
The function contains a blocking functionality. It is possible to block the function
outputs, if desired.
7.1.4 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
1MRS758755 C
552 REC615 & RER615
Technical Manual
To Next Page
Loading...
Need help?
General
