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Section 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 monitoring
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.
1MRS758755 A
Section 7
Condition monitoring functions
REC615 and RER615
535
Technical Manual
Содержание RELION Series
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