Breaker Trip Coil monitor
Breaker Trip Coil monitor
(OP)
We have a high voltage breaker with 2 trip coil per phase. We want to monitor the status of this trip coil and we installed TIR from USI in series with these trip coils. The TIRs are activated by sensing the presence of current in the trip coil.
Question is whether the series connected relay would be adequate to monitor the status of the trip coil or not. Would there be a condition when TIR won't adequately monitor the status of the trip coil? E.g. if TIR is tripped out already and breaker is in trip position and trip signal is sent to Trip coil.
Question is whether the series connected relay would be adequate to monitor the status of the trip coil or not. Would there be a condition when TIR won't adequately monitor the status of the trip coil? E.g. if TIR is tripped out already and breaker is in trip position and trip signal is sent to Trip coil.





RE: Breaker Trip Coil monitor
RE: Breaker Trip Coil monitor
RE: Breaker Trip Coil monitor
If the breaker is tripped already you can't monitor the current to the trip coil because the trip coil is disconnected by the position contacts of the breaker (anti pumping).
RE: Breaker Trip Coil monitor