MIG welder 3-phase 200A

[Vermes]

This device is a homemade 200A 3-phase MIG welder.

1. the 3-phase transformer self wounded
2. bridge rectifier halt-steered
3. thyristor driver (by Patryk 84)
4. impedance coil on core 20cm2
5. feeder (on the photo)

The first tests were made on a 0,8 wire – the max result was 140A, which was caused by low speed of the wire (6m/minute). After changing the wire into 1,2mm, the maximum current reached 180-190A. The tension regulation is from 0 to 35V DC.
The CO2 bottle with the reducer and the euro socket is new, but the aluminum housing was really cheap.



More pictures:



Link to original thread - Migomat 3-fazowy 200A – własnoręcznie wykonany