On 5/16/2011 2:10 AM, Tomm V Aldridge wrote:
Build a phase converter like we do to run 3 phase motors off single phase.
Yes, you lose some efficiency getting there, but it makes the
implementation a whole lot easier.
73
Roger (K8RI)
> Take care with core saturation as the cross section of the center leg is
> equal to those of the outer legs in a three phase xfmr which is not the case
> with a single phase xfmr where the center leg area is 2 times that of the
> outer legs as the flux is split evenly between the outer legs. Running the
> center primary at the three phase voltage divided by sqrt 3, 120 on a 208V
> transformer, will allow you to take the secondaries in all three legs in
> series or parallel as long as you observe the phasing. Paralleling is
> always iffy a any flux or turns imbalance will show up as a shorted turn and
> generate excessive heating n the windings.
>
> Tomm - KD7QAE
>
> On Sun, May 15, 2011 at 9:49 PM, Ronald Brown<rg52brown@yahoo.com> 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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