Re: Toroidal transformer ratings?? Amps? Kv? Kva?

You are right, VA does take in account inductive reactance, however
for this discusion on power supplys i do not think it is of any
consequence...But if you would like to give us a tutorial i am all
ears!!!


Wally




--- In CAD_CAM_EDM_DRO@yahoogroups.com, Ken Langston
<kenlangston@s...> wrote:

>
> 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@g...>
> 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
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
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to

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POSTING

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EXCEPTIONS........

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