Siemens Solkor 7PG2113 Technical Manual page 324

7PG2113/4/5/6 Solkor Applications Guide
6.7 Circuit-Breaker Maintenance
2
The Relay provides Total, Delta and Frequent CB Operation Counters along with an I t Counter to estimate the
amount of wear and tear experienced by a Circuit-Breaker. Alarm can be provided once set levels have been
exceeded.
Typically estimates obtained from previous circuit-breaker maintenance schedules or manufacturers data sheets
are used for setting these alarm levels. The relay instrumentation provides the current values of these counters.
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