[Amps] HV transformers I want to series primary and parallel secondary

[Will Matney]

Larry,

Sure they can, you just have to watch the phasing of the windings. In other words, for a series connection like the primary, the end of one winding has to connect to the start of the other and you have a start of a winding and an end of a winding available for the line connection. In parallel it's the opposite. All start winding connections connect together and all end winding connections connect together. These are generally shown on a schematic by a black dot at the top of a winding (coil). There's tests you can do to get the phasing correct, but if they're not you'll know it quickly as if they're identical windings, they'll act as a short and you'll have 0 voltage coming out of the transformer (out of phase windings have a subtractive effect on the voltage). You can use a variac or low voltage transformer to apply a low voltage to the primary to check this without damaging anything. 12 Vac would probably work so you can see that they are connected correctly.

Best,

Will

*********** REPLY SEPARATOR  ***********

On 8/18/06 at 2:50 PM Larry Carman wrote:

>Can a pair of HV transformers having 110 primaries be hooked up in series
>to
>220 and there 2000 secondary ran in parallel? I would assume you would
>still
>need secondary inductance to equalize the currents through each
>transformer?
>
>
> 
>
>Larry N5BIP
>
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