Generator Breaker 3

[wolexy]

Could someone advice on how to determine a generator breaker used for a prallelling or backup purposes? You can give a link as well if one exists.

 

[peebee]

Not sure what you mean by "determine a breaker".

 

[tem1234]

You can take a look at this thread

thread238-205317

You need to give a lot more info if you want help

 

[catserveng]

I can tell you how we did it from the generator manufacturer we repped, and how most of our competition did it as well,

Standby, minimum capability, marginally sized, lowest cost, usually a manually operated breaker with a shunt trip, and most times (but not always) a set of aux contacts. Standby market is heavily cost driven, any way to save a nickel.

For paralleling, motor operated, usually on smaller units 120 VAC charge and close with 24 VDC trip, and in some cases (but not always) an undervoltage release. Parallel applications are widely varied, so breaker selection starts to require more customer/engineer/designer input. We tried offering "standard" parallel capable breakers, but almost in all cases the customer needed something different.

Hope that helps a little.