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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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3 phase welders
A static phase converter will not do a thing for a transformer type 3
phase welder. It might do OK on an old rotary welder. Some one on sci.engr.joining.welding NG tried a rotary phase converter. Seems to me it didn't work as well as expected. I suspect that the inductive load from the welder interacts with the nade up phase from the converter. (Hmmmmm sounds like a GREAT final exam question for a EE major!) But many of the transformer welders will run OK on 2 phase at 2/3rds power. The output from the transformer goes to a massive diode block, you are just missing one phase. Not as smooth as full 3 phase but decent. You may have to experiment with which phase is dead since there will be fans, control circuits, etc that will be running off a single phase. Specifics on which make and model you are looking at would be helpful. Ignoramus15786 wrote: Just confirming... there is no easy way to make a 3 phase welder run on 1 phase power, is that right? I would need a full fledged phae converter to run one, is that true? i |
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