In article , Gary Coffman says...

No need to throw the belt, just switch the power off to the pony and let
it freewheel.

I remove the belt, Gary, because it reduces the noise output
of the converter setup by about a factor of three. The
belt and pony motor spinning makes a fair racket.

Always use a contactor to supply power to the rotary. The contactor
is activated with a momentary push button, then it is held in by auxillary
contacts on the contactor. If the power fails, the contactor releases,
and won't re-engage until you push the start button again. This way,
if the power fails, the converter will be *cold* until you manually restart
it after the power returns. You'll also want a normally closed push
button in series with the contactor coil. This is your stop button.

This is also excellent advice. Unless one is willing
to be absolutely fanatic about never leaving a converter
that is not controlled by a contactor, it's the way to go.

If a large idler motor spins down and then power is re-applied,
there's going to be some smoke, someplace. If one is lucky,
it will be in the fuses or circuit breakers.

Jim

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