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Old 17th Oct 2020, 11:58 am   #10
Join Date: Aug 2017
Location: Taunton, Somerset, UK.
Posts: 316
Default Re: Wiring a 110V two-phase motor?

Would there be any point in testing this item? After all, lets not forget that it would be reliant upon a suitable supply for it to function.

For information purposes however there a system of simplifying small industrial application transformers that function in open delta format. In this the transformer consists of a three phase primary but only two phases are used on the secondary that are configured vectorally 120 degrees apart. They would then be connected in series with the opposite ends used for measurement purposes; hence the reference to open delta.
These same transformers are also used typically in industrial motor control centres for small power and metering requirements. Where, if I recall the secondary windings would be rated 110V divided by root three which imply the ability to test the item but by using two step up transformers; one for each winding.
Does anyone else concur?
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