circuit switcher, circuit breaker
circuit switcher, circuit breaker
(OP)
Are circuit switchers employed on the basis which assume bolted faults on the primary are rare? What is the advantage of a circuit switcher over a breaker?
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circuit switcher, circuit breaker
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RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
@DTR2011, Thank for the info :)
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
The simplest form of a switcher is the “candlestick” model with vertically aligned interrupters. This is good for when you want to add say transformer protection to a substation that didn’t have it before. There are also combination models with interrupter and motorized disconnect switches (but of course the interrupter opens first, not the switch). Typically fewer foundations are required vs. stand-alone circuit breakers and switches. Also less physical space is required.
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
In either case it is better to buy a breaker or circuit switcher with a rating higher than you expect to see, so that you can reduce the maintenance cost.
The issue is the contact errosion of interrupting the fault. For some applications the lower rating will work, but for most over head line protection needs a higher interrupting device for a longer life.
RE: circuit switcher, circuit breaker
Do today's circuit switchers meet such standards of interrupting as breakers? My understanding (correct me if I am wrong) is that much of the advertised claims regarding circuit switchers are never verified?
As for replacing fused, Ive heard of C/S also replacing motorized disconnects where transformer protection trips the nearest breakers, the motorized air break opens and the breakers re-close. With a C/S implemented this does not have to be done, a bonus because normally it takes out a line position.
I saw that which is a concern to me. While I do not expect a transformer protective device interrupting a dozen bolted faults, it gives me piece of mind knowing I have more interrupting attempts.
My feelings lean toward a live tank circuit breaker over a circuit switcher.
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
RE: circuit switcher, circuit breaker
It's not transformer protection, but circuit switchers have a place.
RE: circuit switcher, circuit breaker