12.12
Insulation liquid monitoring function SSIML (71)
12.12.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Insulation liquid monitoring function
SSIML
-
71
12.12.2
Application
Insulation liquid monitoring function (SSIML ,71) is used for monitoring the circuit
breaker condition. Proper arc extinction by the compressed oil in the circuit breaker is very
important. When the level becomes too low, compared to the required value, the circuit
breaker operation is blocked to minimize the risk of internal failures. Binary information
based on the oil level in the circuit breaker is used as input signals to the function. In
addition to that, the function generates alarms based on received information.
12.13
Circuit breaker condition monitoring SSCBR
12.13.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Circuit breaker condition monitoring
SSCBR
-
-
12.13.2
Application
SSCBR includes different metering and monitoring subfunctions.
Circuit breaker status
Circuit breaker status monitors the position of the circuit breaker, that is, whether the
breaker is in an open, closed or intermediate position.
Circuit breaker operation monitoring
The purpose of the circuit breaker operation monitoring is to indicate that the circuit
breaker has not been operated for a long time. The function calculates the number of days
the circuit breaker has remained inactive, that is, has stayed in the same open or closed
state. There is also the possibility to set an initial inactive day.
1MRK 511 286-UUS A
Section 12
Monitoring
307
Application manual
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