ECN Forum Forums General Topics of the Trade General Discussion Area connecting two ATS to one generator.

I need some technical help I have a job to connect two transfer switches and one generator tha means any power failer on the normal feed to any of ATS shuold start the genrator . have never don that befor.
thanks for any help

peteranthony,
the start signal to about all gensets is a simple dry closure, so a start signal from either should be fine, that said, why do you need a signal from both?

Is there a possibility that if the power is out on #1, it would still be on for #2? A signal from either one should be sufficient.

The only thing I see that would need to be incorporated, is some sort of a run switch, where by if one xfer switch starts it, the other start circuit is locked out, Xfer is still enabled, but the start sequence is interupted. Depending on the internal engineering of the xfer switch, that may already be accomplished.

You might want to look at total start load to make sure that if both tried to come online at the same time, you wouldn't overload the generator, a timer circuit on one would sove that. It means that if it(the one with the timer) came on first, the timer would have to time out before it would xfer, a few seconds at most.

It's not hard to glum out. Just takes a little thinking.

TW

the generator is abble to handel the load but we need to be able to start from any ats.
that is when there is a problem in any of the three defrent load by the way this is fora medical building any idia is aprciated.