Running 3 phase welder of generator

  1. rangel Member

    Posts: 124
    london
    Hi there I need help please dose anyone know how many bhp or kw generator I need to run 200 amp 3 phase welder?.there are few on ebay which donnt look to bad generators a mean and much better 3 phase welders
  2. rangel Member

    Posts: 124
    london
    I'm sorry I mean phase converters
  3. Wozzaaah

    Wozzaaah The wizard of woz Staff Member

    To clarify your question, are you looking to run a 3PH welder on a 240V single phase supply?
    If so then don't bother, the converter you need will cost you a fortune! :o
  4. rangel Member

    Posts: 124
    london
    Actually there are few phase converters one 36 bhp other one is 8 for a decent price
  5. Wozzaaah

    Wozzaaah The wizard of woz Staff Member

    Link please? Most of the ones you see on there are for motor driven machinery, they won't run welders. ;)
  6. rangel Member

    Posts: 124
    london
    SH not new
  7. rangel Member

    Posts: 124
    london
    file:///C:/Users/Stefka/Documents/3%20PHASE%20CONVERTER%208HP%20%20%20eBay.htm
  8. rangel Member

    Posts: 124
    london
  9. rangel Member

    Posts: 124
    london
    I'M sorry bid useless whit pc
  10. Wozzaaah

    Wozzaaah The wizard of woz Staff Member

    Not sure that one would work with a welder, I think that's a static converter for running motorised equipment.
    As far as I'm aware you need a rotary converter to run a welder....and a big one too! ££££ :(
    Seriously, forget the idea and get a single phase welder instead. ;)
  11. rangel Member

    Posts: 124
    london
  12. Wozzaaah

    Wozzaaah The wizard of woz Staff Member

    If I was you I'd do some serious homework before buying something like that. What sort of input current would be required to run it and can you supply that much to it?
    £700 would buy you an awful lot of single phase welder if that's all you intend to run from it. ;)
  13. rangel Member

    Posts: 124
    london
    probably true to much of a hustle
  14. madkayaker

    madkayaker Pro sparkey Pro Welder

    Posts: 13,726
    Cumbria
    I posted a load of information from transwave rotary converter. I had contacted there technical people on a unrelated matter so got the info about size of converter needed for welder size etc. IF you had the welder and planned to get other machinery it might be viable but if you don't have the welder or other kit then forget it. I would de very carefully getting second hand kit as many of the people that made most of the kit are long gone so spares will be impossible to get. It would have to be a rotary converter as many of the statics are just switch mode units so the phase voltage is the same as the line voltage where as the welder will have been designed for higher phase voltage than line voltage. Some welders might stand this others will not.
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