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3 phase testing

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Posted By<" ">Nigel Ottman on April 23, 2002 at 09:52:38:

I'm looking for a quick and easy way to test a three phase safety switch. The switch monitors: hi/low voltage (easy to test), phase imbalance (tough), phase reversal (easy), and loss of phase. voltage is 420/480. any suggestions? Currently we used a step up transformer (hi voltage), switched two lines (phase reversal), tried to remove a phase.. thus lost power, and that was about all I could test for. I would like to set up some kind of a permanent test fixture as we use alot of these.

< "> Subject: Re: 3 phase testing


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