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| 400 to 480 VAC testing |
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| jmelson:
--- Quote from: BeBuLamar on February 12, 2022, 01:54:34 pm --- I have transformers that are 480-120 and 480-240 but I don't have any for step up. I am afraid of using them in reverse. --- End quote --- Why? There is NO REASON to be afraid of this, except the usual care when working with 480 V. The transformer will work FINE in reverse as long as you respect the Watt rating of the transformer. Jon |
| Zero999:
Only 400V to 480V is required, so get a 110V to 400V isolation transformer and put the secondary in series with the output of a 120V Variac. That will give 400V to 520V out. |
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