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View Full Version : Going from 3 phase to single phase


TONY 63
Dec 16, 2007, 11:48 AM
I have a three phase welder but only single phase 220 power. Is there any way I can hook it up and get it to work? With out costing allot of money?

450donn
Dec 16, 2007, 12:55 PM
A phase converter. But don't look for it to be cheep.

labman
Dec 16, 2007, 02:26 PM
You would need both a transformer and a 240 source capable of suppling the watts the welder uses. A single phase welder could be cheaper.

AllTrades
Dec 17, 2007, 10:09 AM
I have a three phase welder but only single phase 220 power. Is there any way I can hook it up and get it to work? With out costing allot of money?
You could buy or build a rotary phase converter. This would convert your 220v single phase to 3-phase. If you need higher voltage you would add a transformer.

A rotary phase converter is a 3-phase motor that is run on single phase current. The third leg of this motor acts as a generator providing current 120 degrees out of phase from the other two. The only other parts are a starting capacitor and two run caps. The idler motor must have at least the same HP as the 3-phase equipment you intend to run (more if the equipment is hard start.)

With a used or surplus motor, a DIY rotary phase converter can be very economical. Google will lead you to plans to build your own. To buy one cheap, start with eBay.

AllTrades
Dec 17, 2007, 10:09 AM
I have a three phase welder but only single phase 220 power. Is there any way I can hook it up and get it to work? With out costing allot of money?
You could buy or build a rotary phase converter. This would convert your 220v single phase to 3-phase. If you need higher voltage you would add a transformer.

A rotary phase converter is a 3-phase motor that is run on single phase current. The third leg of this motor acts as a generator providing current 120 degrees out of phase from the other two. The only other parts are a starting capacitor and two run caps. The idler motor must have at least the same HP as the 3-phase equipment you intend to run (more if the equipment is hard start.)

With a used or surplus motor, a DIY rotary phase converter can be very economical. Google will lead you to plans to build your own. To buy one cheap, start with eBay.

mahendrakumar03
Mar 4, 2011, 06:11 AM
Hi sir
I want 1 phase to 3 phase converter only transformer and capacitor

tkrussell
Mar 4, 2011, 06:14 AM
What do you mean, you want a 3 phase converter to only power a transformer and a capacitor?

Use more words to describe your situation and exactly what your trying to accomplish.

Stratmando
Mar 4, 2011, 09:30 AM
Don't know if this guy can help:
Run 3 phase motors on single phase with homemade transformer! (http://video.google.com/videoplay?docid=2594507003973595160#)