RE: [CAD_CAM_EDM_DRO] Re: transformer question (ANOTHER QUESTION)

I already have a 3 KVA single phase one that I am going to use in my
retrofit. I guess I'll hang on to this one for a spare....... I wasn't
sure about the 3 phase though.

Larry Olson

-----Original Message-----
From: ballendo [mailto:ballendo@...]
Sent: Sunday, May 07, 2006 6:22 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: transformer question (ANOTHER QUESTION)

Larry,

That's a 3KVA transformer...

I just used one portion driving gecko's in my BR retrofit. Works
great, takes advantage of the greater efficiency of modern bipolar
drives, AND gives the owners TWO "backup" transformers<G>. BUT...

As mentioned in an earlier post either here or in my DIY-CNC yahoo
group; I was able to take advantage of the fact that the line
voltage at my site was 208, and the trans was 220. So I never exceed
gecko's 80V specs. With Rutex, you won't have this limitation.

Hope this helps,

Ballendo

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Larry Olson" <larry@...>
wrote:

>
> I recently had someone give me a Bridgeport transformer off of a

Boss

> stepper machine and after looking at it I noticed it is for 3 phase
> power. The diagram on the top would indicate that it is 3 separate
> transformers on 1 core. My question is "can I connect 220 (single

phase)

> to all 3 elements in parallel on the primary side?" and also is

there

> any problem in doing so. I am not very familiar with transformer

design

> so any help would be appreciated.
>
> Thanks,
> Larry Olson

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