quastion

That is fast. It usually takes me about 10 minutes to rewire a three phase motor from delta to wye. Somehow, I don't think this was the intent of your question, so perhaps you should ask again with more information, and a little better framing.

Jeff

Do you mean mechanically reconnecting the windings? Under what conditions do you do that?

Jerry

Don't some motor starters do this (WYE (delay) DELTA) to lessen startup current?

Peter Wallace

Yup, and most do it a lot quicker than 5 seconds. But when does Babak do it, and why?

Jerry