ABB RELION REX640 - 7 Condition monitoring functions; 7.1 Circuit-breaker condition monitoring SSCBR (ANSI 52 CM); 7.1.1 Identification; 7.1.2 Function block

7 Condition monitoring functions
7.1 Circuit-breaker condition monitoring SSCBR (ANSI
52CM)
7.1.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Circuit-breaker condition monitor-
ing
SSCBR CBCM 52CM
7.1.2 Function block
Figure 770: 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 which can be used to block the
function outputs.
7.1.4 Analog input configuration
SSCBR has one analog group input which must be properly configured.
1MRS759142 F
Condition monitoring functions
REX640
Technical Manual
1359