Microprocessor controlers in circuit breakers
Microprocessor controlers in circuit breakers
(OP)
Has anyone else come across newer circuit breakers with microprocessor controlers? The problem I am running into is the trip circuit the manufacturer is expecting me to use is different than the IEEE PRSC paper on trip circuit design. The problem is the trip current is less than 20 mA, and the trip voltage is about 18 volts. This means it is incompatable with the red led position indicator on the panel board.
When I asked the breaker manufacturer about this, they said that we don't need to monitor the trip circuit, because the microprocessor monitors the trip coil. It seems we are losing something here, and it isen't a great benifit for the utility.
When I asked the breaker manufacturer about this, they said that we don't need to monitor the trip circuit, because the microprocessor monitors the trip coil. It seems we are losing something here, and it isen't a great benifit for the utility.






RE: Microprocessor controlers in circuit breakers
RE: Microprocessor controlers in circuit breakers
RE: Microprocessor controlers in circuit breakers
My purpose in this post was to see if we really were the only ones with this problem. ABB clames that we are.
RE: Microprocessor controlers in circuit breakers
But ABB isn't alone with having problems with metal-clad switchgear around here.
RE: Microprocessor controlers in circuit breakers
RE: Microprocessor controlers in circuit breakers
RE: Microprocessor controlers in circuit breakers