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  1. #1
    Join Date
    Nov 2018
    Location
    South Austrailia
    Age
    72
    Posts
    4

    Default The Kingston Hercus 260

    A quick question - the cheap VFD has input of single phase 240 volt and out put of 220 volts on each of the three phases and my electrician says that it will not work with the three phase motor which needs each phase at 415 volts - did I get the wrong VFD cheers Keith.

  2. #2
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    59
    Posts
    6,540

    Default

    The motor has to be configured as a delta winding rather than the standard star winding. Once that has been done it should all work. Others here have converted their motors or if you are not interested in doing that personally, then a trip to a motor rewinder's.

    Michael

  3. #3
    Join Date
    Aug 2008
    Location
    Tennant Creek, Aust
    Age
    61
    Posts
    596

    Default

    Dont know if this will help a Hercus 9 AR wiring diagram.



    Hercus 9 AR wiring diagram.jpg

    Ratty 05/2004 -05/07/2010 COOPER 01/08/1998-31/01/2012

  4. #4
    Join Date
    Nov 2007
    Location
    melbourne australia
    Posts
    3,228

    Default

    That diagram shows a single phase motor. Keith's is 3 phase.
    Chris

  5. #5
    Join Date
    Jan 2019
    Location
    epidermis
    Age
    73
    Posts
    6

    Default

    Hi Keith,

    here is a picture of my single phase VFD with three phase output to the 3ph lathe motor . . .
    john

    VFD controls lathe RS.jpglathe stand ready for lathe and chip tray RS.jpgMotor Specifications RS.jpg3ph motor wiring options RS.jpg3ph wiring.jpgLathe manufactured 1981 RS.jpglathe stand complete RS.jpg

    hope that puts the matter beyond reasonable doubt?
    john aka castellated nut

  6. #6
    Join Date
    Jan 2019
    Location
    epidermis
    Age
    73
    Posts
    6

    Default VFD single phase input three phase output

    Hi Keith,

    here is a picture of my single phase VFD with three phase output to the 3ph lathe motor . . .
    john

    VFD controls lathe RS.jpglathe stand ready for lathe and chip tray RS.jpgMotor Specifications RS.jpg3ph motor wiring options RS.jpg3ph wiring.jpgLathe manufactured 1981 RS.jpglathe stand complete RS.jpg

    hope that puts the matter beyond reasonable doubt?
    john aka castellated nut

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