The Shop > Tools
phase convertor
DavidA:
I understand that one justification for the change was that colour blind people have problems with red and green.
Dave.
lordedmond:
Yep one of the electricians I worked with during my time was colour blind on red and green , it was the old TRS cable that he had trouble with especially in the moulding shops
CB is common in males but uncommon in females , my daughter is CB on R and G , but I am ok and there is no history in mine or the wife's family .
To the OP sorry to derail your thread you did a good job on the phase converter , what's the PF like , do the caps provide enough lead to counteract all the inductance in the circuit with two motors running
Stuart
DavidA:
Andrew,
The book arrived yesterday and I had a quick scan of the relevant parts.
It appears that the heart of the whole thing is the 240 to 415 Volt auto transformer conversion.
The rest being a normal Steinmetz capacitor arrangement driving an idler motor.
So I don't anticipate too many problems.
I've done a couple of transformer rewinds in the past and found the most difficult part getting the lamination's back in place.
Now need to go have a good look at my old stick welding set.
Dave.
Andrew Wildman:
dave,
I did not rewind my welder. I looked specifically for a 240/415 v input version and then just connected 240 in and 415 out (built a little terminal box that sits on the top plate) also means it still works as a welder :zap:
DavidA:
Andrew,
That's cheating; but a good idea.
I may look around for a dual voltage welder on ebay and sell my present single voltage one.
Lot's of options.
Dave.
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