Re: [CAD_CAM_EDM_DRO] Re: Toroidal transformer ratings?? Amps? Kv? Kva?

on 2005-01-26 18:56:05 UTC

Isn't there a little more to it?

Volts * Amps only equals Watts in a purely resistive circuit, and in anything AC there is inductance and inductive reactance. Watts equals the root of (VA squared - VAR squared.) or have I got it all wrong??
Ken.

----- Original Message -----
From: cnc_4_me <cnc4me@...>
Date: Wednesday, January 26, 2005 4:22 pm
Subject: [CAD_CAM_EDM_DRO] Re: Toroidal transformer ratings?? Amps? Kv? Kva?

>
>
> Good answer Less, but i will throw in a example here just to make
> it
> simple...
>
> 1KVA = 1000VA
> a VA is volt amps.
> P or power is amps x volts, so VA is like saying watts...
> now we have 1KVA = 1000 watts.
> I or current in amps = P or power in watts / E or voltage in volts.
> so a 1KVA or 1000 watt transformer at 80 volts has...
> 1000 / 80 = 12.5 amps
>
>
> Wally
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, Les Newell
> <lesnewell@h...>
> wrote:
> > Hi Ron,
> >
> > KVA = kilo volt amps. Multiply the KVA rating by 1000 then
> divide
> by the
> > output voltage to get the current in amps.
> >
> > Les
> >
> > R Rogers wrote:
> >
> > >Looking at toroidal transformers or any transformer, How does
> one
> determine the secondary output amperage? They are generally rated
> by
> voltage and then Kva or Kv. Why dont they say just Voltage and
> Amperage?
> > >
> > >
> > >Ron
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >[Non-text portions of this message have been removed]
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> http://groups.yahoo.com/group/jobshophomeshop I consider this to
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> are there, for OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING
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