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APC Smart-UPS is a line of uninterruptible power supply (UPS) systems produced by American Power Conversion (APC).

Repair or source a UPS transformer?

I have a SUA1500RMI2U, with a cooked transformer.

Replacement is difficult as the exact model of the transformer seems hard to find, due to age. Replacements I do find also seem fairly expensive.

I’ve heard of transformers with inline fuses, and I’m hoping I can repair this one.

Does anyone have any recommendations on where to start checking if there’s an easy fix or better yet, if there’s a drop in equivalent replacement?

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Is there any manufacturer information on the transformer itself? I'm wondering, if we could find the specs for it, about locating an equivalent.

I’ll crack open the box tonight and get the details.

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Have you tried contacting APC to get the schematics and board view drawings to help figure things out.

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Not yet, as I’m expecting the response to be “no, that’s not been sold for x years. Please buy a new $2k unit.”

@jeremyvirgo - Don’t be to fatalistic, you might be surprised.

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