Re: [CAD_CAM_EDM_DRO] Re: estimating current of a per supply

The cross sectional area of the core is the limiting factor as to how
mush flux at saturation the xfmr can handle. The "core" is only the bit
in the center that passes thru the windings. An area of say two sq.
in. is about a 100 watt and 3 sqin about 250 watt and 4 sqin 500 watt.
This does not consider the duty cycle the rest of the xfmr is designed
for. Xfmers designed to be saturated continuous duty you can boil water
on. Weight is a good indicator as well, and some where I have a chart....

Mark

turbulatordude wrote:

> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "carlcnc" <carlcnc@y...>
> wrote:
>
>> Hello
>> I have a couple of large transformers voltage is known, how do
>
> I
>
>> gaet an accurate "guess" of their current capability?
>>
>>
>> thanks
>> Carl
>
>
>
> Hi Carl,
>
> I've been looking for a scientific answer to gageing the power and
> the closest I have found is some vague references to the core area as
> a means of knowing the current. I have not found the calculations
> that would actually determine the amperage.
>
> But, it seems the consensus is based on wire gauge. since wire
> selected has to carry the current, there is no benefit to use thicker
> wire as it makes it hard to fit. also the wire has to be thick
> enough or it will overheat. so the wire gage is a good place to start.
>
> Not a great answer, but a starting point.
>
> Dave
>
>
>
> Dave
>
>
>
>
>
>
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