I want to make an arc welder from this stripped transformer. As far as I know it is a 3 phase transformer that could transform 380V to 12,24,40. I know how a regular 2 coil transformer works, but I don't understand the need of these many wires.
The 4 on the back were cut, the top 3 on the front go into the voltage switcher, bottom 4 on the front go into another switch(which I guess is for amps). There are lots of loose wires and missing parts. I want to make something useful out of this. Do I have to rewire the transformer to be useful for me?
I was thinking to make the 2 outside coils the primary and hook it up to 230V. The middle to be the secondary and use less winding. I don't know if this would work at all.
Update: So I mesaured the 3*4 wires on the back side each 4 are linked which I guess means 3 phase + neutral and that should mean star topology. The problem is I only mesaured 1.6 ohm on these wires that's very low isn't it? The 3*10 wires mesaured 0.9-1.3 ohm, but all of them are linked when I tested it with continuity and resistance. Does that mean that all of the wires are melted/corroded? I have also noticed the remains of a blue and red wire and 3 white, the 3 white colored wires are much thinner.