In a message dated 12/15/01 8:52:20 AM Eastern Standard Time,
jflanders2@home.com writes:
>
>
> For "ordinary" old power transformers:
>
> Is there a rule of thumb to help estimate transformer KVA capacity from
the
> iron (or total) weight? If not, why?
>
> Prior to hypersil, weren't most transformers made from similar iron in
> similar configuration? If so, wouldn't capacity be directly related to
core
> weight?
>
> Jerry W4UK
>
Jerry,
In older ARRL Handbooks (and probably newer ones also), there is
a description of how to estimate the KVA rating of ordinary transformers. It
basically involves measuring the cross-sectional area of the core contained
within the windings and that value is applied to a graph given in the book.
Look in the index under transformers.
73 de
Dave, WT8R
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