Functionality - ABB REL650 series Technical Manual

1MRK 506 335-UUS A
14.18.2
14.18.3
Technical manual

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. For proper functioning of the circuit breaker,
it is essential to monitor the circuit breaker operation, spring charge indication, breaker
wear, travel time, number of operation cycles and accumulated energy. The energy is
calculated from the measured input currents as a sum of I
when the calculated values exceed the threshold settings.
The function contains a block alarm functionality.
The supervised and presented breaker functions include
• breaker open and close travel time
• spring charging time
• number of breaker operations
•
Y
accumulated I t per phase with alarm and lockout
• remaining breaker life per phase
• breaker inactivity
Function block
SSCBR
I3P* TRVTOAL
BLOCK TRVTCAL
BLK_ALM SPRCHRAL
POSOPEN OPRALM
POSCLOSE OPRLOALM
ALMPRES IACCALM
LOPRES IACCLOAL
SPRCHRGN CBLIFEAL
SPRCHRGD NOOPRALM
CBCNTRST PRESALM
IACCRST PRESLO
SPCHTRST CBOPEN
TRVTRST CBINVPOS
52a
ANSI10000281-1-en.vsd
ANSI10000281 V1 EN
Figure 312: SSCBR function block
Section 14
Monitoring
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2 t values. Alarms are generated
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