I too have a lot of specialist equipment like that.Let me have a mooch. I have a 110 box but there may be an even safer option, I think I have a 24v AC power supply in among all my treasure (it’s treasure not ****e as my wife calls it!)
I too have a lot of specialist equipment like that.Let me have a mooch. I have a 110 box but there may be an even safer option, I think I have a 24v AC power supply in among all my treasure (it’s treasure not ****e as my wife calls it!)
I’ve noticed you have some wiring in the wrong places according to your picture you took when you removed the transformerSwitches without primary connected and then with.
6 wires in total top of 1-2 has 2 wires in one crimp, and same with bottom 3-4
View attachment 297932 View attachment 297933
Tell me more please. My head is mush at the min!I’ve noticed you have some wiring in the wrong places according to your picture you took when you removed the transformer
Ahh, now I see it...... the grey and black are wrong way around.. That wont help I suppose!Apologies to people following this, I had to travel to Gloucester for work yesterday so was knackered by the time I got home.
Tell me more please. My head is mush at the min!
you're right about the confusing part! The primary seems to work out ok, but there's a 3v difference.Two secondary windings, label one as A0 and A1, label the second as B on both ends of the winding.
Connect A1 to one end of the B winding.
Measure & note the voltage across A0 and A1. (Call it AV)
It may be an idea to leave this until the transformer is in and the primary wired up properly - the numbers don't look too far wrong TBH but it's difficult to test with a low voltage.you're right about the confusing part! The primary seems to work out ok, but there's a 3v difference.
The confusing part is the secondary.
A0 - A1 4.3v
B0 - B0 4.4v
A0 - B = 8.2v
A1 - B= 8.8v
Dunno, but i think I have answered my own question reading this back to myself!
Not quite.So in simpleton (me) terms. When i put the transormer back in.... the primaries to the switches as you describe, the secondary A1+B to rectifier A0 +B to rectifier?
I have tried the 24v to the rectifier but the motor does not spin, what am i doing wrong?
I just measured using the old tags. looks like we osted at same time. I'll double check the voltages as per your instructionsCrowd goes wild
Now measure the secondary voltages. We need to know phasing and we also need to know the voltage range we are working with.
First sort out the phasing.
Label one secondary as A0 A1 and the other as B and B for the moment, we need to know phasing.
Measure A0 to A1 and note voltage (AV)
Measure B to B and note voltages (BV)
Connect one end of B to A1 then measure A0 to the unconnected B.
If the voltage is greater than AV (e.g. AV + BV) then label the free end as B1 and the end connected to A1 as B0.
If the voltage is lower than AV (possibly could be almost 0V) then label the floating end of B as B0 and the end connected to A1 as B1.
Phasing is now sorted, let's sort the voltages out.
Now set the welder to lowest range and measure and note the voltage A0 to A1 (or B0 to B1)
Do the same for all four power settings on the welder - always measure the same primary winding, don't do a mix of A and B. We only need the voltage range from one winding and can infer the voltage output from the other winding - you can measure them both if you like for completeness but it's not really necessary..
Post the numbers