Re: [CAD_CAM_EDM_DRO] Re: Thoughts on PC Based Control Retrofit....now transformers.

KVa stands for KiloVolt/Amps so a 2KVa transformer is capable of delivering
the equivalent of 2000 volts at 1 amp or 1 volt at 2000 amps. So if it gives
110 volts output, this will be, theoretically, at 18.18 amps. You do,
however, have to allow for losses of maybe 20% and so a workable figure
would be around 14 amps. The 6 KVa type would give around 43 amps.

Ian
--
Ian W. Wright
Sheffield UK
www.iw63.freeserve.co.uk

----- Original Message -----
From: "Marty Escarcega" <escarcega@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: 04 May 2001 23:01
Subject: Re: [CAD_CAM_EDM_DRO] Re: Thoughts on PC Based Control
Retrofit....now transformers.


> What kind of current capacity John? You want to start exporting
> them? :-)
> Marty
>
> On 4 May 2001, at 19:16, John Stevenson wrote:
>
> > Don't know if this info is relevant to the US but here in the UK we
> > have 240 to 110v transformers for using power tools on site. These
> > come in various outputs as regards aperage. Usually 2Kva to 6KVA what
> > ever that means. These are very heavy and encapsulated in usually a
> > yellow plastic case, made to be dropped from scaffolding on a building
> > site - no I'm not joking. Inside they have a centre tapped secondary
> > so you get 50v - 0 - 50v. 50 x 1.4 for a full wave DC supply will give
> > you 70v DC. Good thing about these is they are plentyfull. Any car
> > boot sale will reveal at least 4 and the going price is usually 20 to
> > 25 UKP each, sometimes less. Do you have something like this in the
> > US??
> >
> > John Stevenson
>
>
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