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Thread: Phase converter querys

  1. #1
    Join Date
    Aug 2004
    Central Queensland, Australia

    Question Phase converter querys

    I could be getting a 3 phase mill in the near future. It is powered by 415V 3 phase motors.1 for the drive , 1 for the powerfeeds and a coolant pump. I have only 240V single phase here. Upon quering the power company they want $12 000 to run 1 wire 400m and a transformer(our current power comes off a 3 phase line)plus more money to get that power to the workshop. Way tooooo much.

    I under phase converters will convert my 240V to 3 phase but the motors are 415V. How do most people get around the voltage differences.

    See Ya
    Precision takes time.

  2. #2
    Join Date
    Apr 2001


    You'd need a transformer; either a 240-415 3-phase step-up transformer (and I don't know how well a transformer might like the output of a VFD) or a 240-415 single-phase transformer and a VFD for 415V single-phase, which I doubt exists.

    If I wuz you I think I'd buy 240V motors. Most likely cheaper.

    Or check to see if the existing motors can be rewired for 240V.

    [This message has been edited by SGW (edited 08-13-2004).]
    Try to make a living, not a killing. -- Utah Phillips
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  3. #3
    Join Date
    Jan 2003
    On the Oil Coast,USA


    Ronk makes a rotary phase converter than not only coverts single to three phase,but also acts as an x-former to provide higher voltage.
    I just need one more tool,just one!

  4. #4
    Join Date
    Jan 2003
    Jacksonville, Florida


    Isn't there one on ebay right now? Convert 440 single phase to 440 3 phase. 50 hp
    David from jax

    3rd time for listing it, or more.
    A serious accident is one that money can't fix.

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