7SR220 Instrumentation Guide
© 2017 Siemens Protection Devices Limited Page 15 of 20
Instrument Description
Target 100
CB Freq Ops Count
Count 0
Target 10
Displays the number of CB trips experienced by the CB over the last rolling 1 hr
period. When the target is reached the relay will only do 1 Delayed Trip to
Lockout.
CB Wear
Phase A 0.00MA^2s
Phase B 0.00MA^2s
Phase C 0.00MA^2s
Displays the current measure of circuit breaker wear.
CB Wear Remaining
Phase A 100%
Phase B 100%
Phase C 100%
Displays the current measure of circuit breaker wear remaining
CB Trip Time
0.0ms
Displays the trip time for the circuit breaker.
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