Re: [CAD_CAM_EDM_DRO] Re: Re: Transformers 3 phase power calculations and fuse size

On Monday 25 April 2005 07:53 pm, Jeff Goldberg wrote:

> The three secondaries can be connected together (paying attention to
> polarity of the coils) to get 33 volts A.C. I'm pretty sure you can't (or
> shouldn't) hook the two transformers together the way you describe because
> they do not share a common iron core. It's been too many years since I
> studied this to be definitive, but I suspect you could have "exciting"
> results.
>
> Jeff

I don't see why you'd have a problem with using two transformers together...

<...>

> Forgot to mention this transformer came out of a laser cutter.
> It's not a lot of use at these voltages and will probably scrapped for the
> copper.
>
> Had a sort out today and found two identical transformers 240v single phase
> in and three 11v secondaries at 50 amps on each.
> I presume I can chain these up to get 66 volts which will give me 94 volts
> DC which will be ideal for the 110v DC treadmill motors running off a 100v
> 20 amp Rutex board