Repair or source a UPS transformer?

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APC Smart-UPS

APC Smart-UPS는 American Power Conversion(APC)에서 생산하는 무정전 전원 공급 장치(UPS) 시스템 제품군입니다.

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Jeremy Virgo @jeremyvirgo

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게시됨: 2025년 12월 9일

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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.

Jerry Wheeler 의 2025년 12월 9일

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

Jeremy Virgo 의 2025년 12월 10일

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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. — Jerry Wheeler

DanJ @danj 평판: 502.8k Self employed contract worker 35 347 977 · Answer 1 · 2025-12-09T19:06:03-07:00

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DanJ @danj

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게시됨: 2025년 12월 9일

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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.”

Jeremy Virgo 의 2025년 12월 10일

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

DanJ 의 2025년 12월 11일

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oldturkey03 @oldturkey03 평판: 861.3k 1.5k 978 2.4k · Answer 2 · 2025-12-13T21:08:49-07:00

oldturkey03 @oldturkey03

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@jeremyvirgo if you have not "cracked" it open yet, how do you know it's your transformer :-) Anyhow, here is the schematic for your APC Smart UPS 1500va Usb SUA1500RMI2U. If it is indeed the transformer then it is most likely the 430-0029 which is a 120/240V-24/48V Class 130(B) transformer

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APC Smart-UPS

Repair or source a UPS transformer?

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