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Thread: Vfd used for non motor load

  1. #1
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    Vfd used for non motor load

    Can this work? I have a 3 phase 208 volt printer (1kw) in a single phase 240 volt shop. What's the best solution?

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  2. #2
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    Rotary phase converter would be best for that. VFDs don’t really make 3 phase that is useful for anything other than AC induction motors. The output needs the motor to make it appear to be AC. For anything else, it’s just a hash of alternating DC pulses.
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  3. #3
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    Quote Originally Posted by Wyremonkey View Post
    I have a 3 phase 208 volt printer (1kw)
    What do you mean by printer? A printing press? A computer printer? Something else? It matters (motor-only, motor + heaters, electronics?).

    For instance, I'd never run a computer printer on a phase converter without the mfg's approval, but then I haven't seen a 3-phase computer printer in over 30 years.

  4. #4
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    For such a small load a UPS is probably as good a choice as anyting. You can get them with single phase input and three-phase output. Not real common but available.
    Bob

  5. #5
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    Quote Originally Posted by petersonra View Post
    For such a small load a UPS is probably as good a choice as anyting. You can get them with single phase input and three-phase output. Not real common but available.
    That's the way I would go. Actually we supplied a few. Not really mainstream business for us but they were sometimes tacked on to other projects to keep it all under one roof.
    Si hoc legere scis nimium eruditionis habes.

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