VFD Neutral?

  1. steviec_lj

    steviec_lj Rust Welding Professional

    Messages:
    2,801
    Location:
    Barnetby, N.Lincs
    Got a couple of big pieces of kit to install in the next couple of months.

    Have a static phase converter running a table saw, spindle moulder and 4 way tenoner in one workshop.

    Then there’s any they static running a pillar drill, pedestal grinder and a donkey saw in another workshop.

    Looking to power a surface grinder and a Bridgeport in another workshop, but this time around I need a neutral on the output circuit as there’s a transformer on one of the phases for lights and DRO.

    Is there a Neutral output on a VFD, or do I need to go down the Rotary converter route?
     
  2. daleyd

    daleyd Member

    Messages:
    7,101
    Location:
    Wrexham, North Wales
    You’ll need to use a rotary converter if you need a neutral - a vfd will only give you 3 phases.
     
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  3. eLuSiVeMiTe

    eLuSiVeMiTe Member

    Messages:
    12,965
    Location:
    Bedfordshire England
    Would it not make more sense to power the light and dro seperatly
     
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  4. Pete.

    Pete. Member

    Messages:
    9,815
    Location:
    Kent, UK
    Yeah from the use of converters there must only be single phase power so run the VFD from single phase and power the DRO and light from the same single phase supply. That's what I do on my Hardinge lathe.
     
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  5. Anguz

    Anguz Forum Supporter

    Messages:
    677
    bedfordshire
    415 to 240/110v transformer would do it?
     
  6. steviec_lj

    steviec_lj Rust Welding Professional

    Messages:
    2,801
    Location:
    Barnetby, N.Lincs
    Err yeh, that’s how I thought of doing it, moments after posting :doh::whistle:

    Honest :whistle:

    Having a slow day, been fault finding on a Mitsubishi 4x4 system all day..
     
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