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[AMPS] Transformer Current ratings

To: <amps@contesting.com>
Subject: [AMPS] Transformer Current ratings
From: 2@vc.net (2)
Date: Mon, 17 Dec 2001 07:40:04 -0800
>Rich says:
>
>>The primary winding R as well as the mains R are also factors. 
>
>
>For finding the winding temperature rise at a given load, (which is the 
>context
>for which this was suggested), it doesn't matter which winding resistance you
>measure. You are only interested in cold and hot readings.
>
//  The total equivalent series R [ESR] is a determinant in such 
calculations.  The primary and secondary resistances add - accounting for 
turns ratio. 

>Regulation is also affected by leakage reactance, as well as winding 
>resistance.

//   True enough, but with a Hipersil core, ESR is >90% of the game.

-  R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.  
end


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