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modified 9 years ago

Welder 3 phase running on single

15
8
400
07:12:09
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 9 years ago
rich11292000
9 years ago
1 volt source?
usernames
9 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
9 years ago
Where did you find the diagram
usernames
9 years ago
Practical machinist forum i think it was a miller 252 mod
ETJAKEOC
9 years ago
120uF is shorted
usernames
9 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
9 years ago
The phases aren't aligned
gino2440
6 years ago
Has anyone tried this one ? Thanks for the information anyway :)

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