Welder 3 phase running on single

441

07:52:31

I finally got it! I believe this is a fairly accurate representation of the circuit described in practical machinist.  I forget the fellows' name who came up with it. The capacitor values have to be tweaked for full load output and of course remove jumper on the cap and remove the two series resistors in wdg 1 and 3. those changes were made because a 3 phase transformer is different than 3 singles.

published 10 years ago

rich11292000

10 years ago

1 volt source?

usernames

10 years ago

Yeah its supposed to be a 3 phase transformer which as we can see is vastly different than 3 separate transformers. It doesnt appear to work with the simulator but there are people welding with them, claim it works just fine. Its not been confirmed to work with scr type welders though.

rich11292000

10 years ago

Where did you find the diagram

usernames

10 years ago

Practical machinist forum i think it was a miller 252 mod

ETJAKEOC

10 years ago

120uF is shorted

usernames

10 years ago

Yep the phase shift for the middle wdg works out better that way. In real life the way the guy hooks them up is 120uf cap on each lead of center wdg.

WTFCircuit

10 years ago

The phases aren't aligned

gino2440

7 years ago

Has anyone tried this one ? Thanks for the information anyway :)

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