It looks right. But how is the current flowing both ways through that winding - what is the phasing of those coils? Typically I expect coils connected like that to have the +ve end at the top, -ve end of that coil connected to +ve end of the coil below and -ve end of bottom coil to the other side of the supply. So the coils are connected in phase with each other and the 60 volts runs from the top all the way to the bottom, with 30volts at the centre. The current rises in the two coils in sync and flows top to bottom (for 1/2 the AC waveform)Here are a couple of diagrams depicting current flow during each half cycle of the supply, of course ignoring peak vs RMS etc etc.
(And actually the current is always flowing in one direction in both those windings in both pictures. When does it flow in the other direction for the other half of the AC waveform which is what I would normally expect to see?)
In your diagram if I put 60 volts at the top, 30 volts at the middle, 0 volts at the bottom - how does 50 amps of current flow from 60 to 30 + to - and 50 amps from 0 to 30 - to + unless the coils are connected in reverse phase. (but then it's only 30 volts of coils across 60 coming in?!)
Sorry to be obtuse. I'm sure someone has done it and proved it. I'm just trying to get my brain to figure how it does that, probably mixing up resistors and coils. I'll have to study it out more later. I gotta go to bed. Wifey is getting up very early tomorrow morning for some reason.
Because of this, the frequency will be 30 cycles. Therefore I need a transformer with twice as much iron, ie designed for twice as much voltage. A 60 cycle transformer designed with two 60 volt windings (that I will run on 30 volts, 30 cycles), each capable of 50 amps, would be perfect. If it existed lol. Will likely end up winding my own. :shrug:
Umm - I think at 30 cycles it will be rated about 1/2 as many watts as it is on 60 cycles?? - again - it takes more iron at 30 cycles so the core would have to be twice as large. (And maybe more than that, I don't know)