If you parallel all the windings, the magnetic fields all have the same
polarity
and block each other. It's as if you cut the loop formed by the laminations.
I think what you want to do is to apply power to the two outer primary windings
and leave the middle windings disconnected. This forces all the flux through
the middle laminations. Then you can take the output from the two outer
secondaries. Just leave the middle disconnected.
I did some experiments with this on a 3 phase 48V transformer and it appeared
to
work well. This should work with any combination of series or parallel on
primary and secondary...but you have to consider voltage breakdown.
jeff, wa1hco
On 05/16/2011 12:49 AM, Ronald Brown wrote:
> I have a 3 phase plate transformer I want to use on single phase. It has 3
> separate sections and the secondaries can be separated. Can I just parallel
> them up ? I realize core limitations will play into this but is there any
> problem with just paralleling up all three sections?
>
> ron - K0idx
>
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