Breaker Monitoring Sscbr; Identification; Application; Setting Guidelines - ABB Relion SAM600 Applications Manual

1MRK 511 445-UEN B
tResetTempAlm : This is used for the temperature alarm indication to reset after a set time
delay in s.
5.3

Breaker monitoring SSCBR

5.3.1

Identification

Function description
Breaker monitoring
5.3.2

Application

The circuit breaker maintenance is usually based on regular time intervals or the number of
operations performed. This has some disadvantages because there could be a number of
abnormal operations or few operations with high-level currents within the predetermined
maintenance interval. Hence, condition-based maintenance scheduling is an optimum solution
in assessing the condition of circuit breakers.
Circuit breaker operation cycles
Routine breaker maintenance like lubricating breaker mechanism is based on the number of
operations. A suitable threshold setting helps in preventive maintenance. This can also be used
to indicate the requirement for oil sampling for dielectric testing in case of an oil circuit
breaker.
Circuit breaker operation monitoring
By monitoring the activity of the number of operations, it is possible to calculate the number
of days the breaker has been inactive. Long periods of inactivity degrade the reliability for the
protection system.
Circuit breaker spring charge monitoring
For normal circuit breaker operation, the circuit breaker spring should be charged within a
specified time. Detecting a long spring charging time indicates the time for circuit breaker
maintenance. The last value of the spring charging time can be given as a service value.
Circuit breaker gas pressure indication
For proper arc extinction by the compressed gas in the circuit breaker, the pressure of the gas
must be adequate. Binary input available from the pressure sensor is based on the pressure
levels inside the arc chamber. When the pressure becomes too low compared to the required
value, the circuit breaker operation is blocked.
5.3.3

Setting guidelines

The breaker monitoring function is used to monitor different parameters of the circuit
breaker. The breaker requires maintenance when the number of operations has reached a
predefined value. For proper functioning of the circuit breaker, it is also essential to monitor
the circuit breaker operation, spring charge indication or breaker wear, travel time, number of
operation cycles and accumulated energy during arc extinction.
Switchgear control unit SAM600-IO
Application manual
IEC 61850
identification
SSCBR
© Copyright 2017 ABB. All rights reserved
GUID-0FC081B2-0BC8-4EB8-9529-B941E51F18EE v7
IEC 60617 ANSI/IEEE C37.2
identification device number
- -
GUID-45572680-3A39-4B3C-8639-4E4C5A95AA26 v10
GUID-AB93AD9B-E6F8-4F1A-B353-AA1008C15679 v3
Section 5
Monitoring
45