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Thread: Full-range input, 120V output UPS

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    Default Full-range input, 120V output UPS

    Customer would like what basically is an on-line UPS with full-range input and 120V 60Hz output. Frequency/voltage converter which is also battery backuped, as he put it, will be almost impossible to get so I have been looking after UPS only.

    What was my surprise that the cheap morons produce just full-range 230V output, but not full-range input/120V output UPS. Plus there is usually some auto-detect crap for frequency - I need 60 Hz no matter what goes inside. Any tip? Especially from ppl who use 120 V in their country, those may know about such model…

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    Never heard of such a thing.

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    Too bad. There are some dual-voltage ones, but only line-interactive. That's not good as they also need to change the frequency from 50 to 60 Hz. Guess the only reasonable solution would be to use 2:1 transformer and than ordinary 120V online UPS…

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    That may not be all that bad - at least the step-down transformer will provide some isolation as a bonus
    Careful what you wish for... You just might get it.

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    Most Tripp Lite online UPSes auto-detect frequency but have a "frequency converter" mode that overrides that. Some other manufacturers likely provide a similar function.

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    Yeah I've seen some where you can set it via some SW configuration. But that still does not solve the voltage problem…I'd prefer a solution without step-down transformer…

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    Big power supply + battery + inverter?

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    dafuk

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