Re: Wiring two 15KV 240V/50Hz Transformers in Series for use with 110V (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Fri, 15 Jun 2007 11:43:15 -0400
From: Skip Malley <skip@xxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Wiring two 15KV 240V/50Hz Transformers in Series for use  with
    110V (fwd)

If these transformers are Neon Sign transformers, then the center of 
the secondaries is likely grounded and puting them in series is not 
an option.  I would suggest selling the transformers before you leave 
and buying new transformers when you get here.  Other than that, the 
110 to 220V step up transformer is the best option.

Skip

At 08:25 AM 6/15/2007, you wrote:

>---------- Forwarded message ----------
>Date: Fri, 15 Jun 2007 14:10:05 +0800
>From: westland <westland@xxxxxx>
>To: Tesla list <tesla@xxxxxxxxxx>
>Subject: Wiring two 15KV 240V/50Hz Transformers in Series for use with 110V
>
>I have an interesting variant on one of the questions that just came up
>about series wiring of transformers.  I'll be moving to Chicago in two
>months, and from 220V to 110V mains.  I currently have two 15KV
>240V/50Hz/0.03A Transformers wired in parallel (for .060A) that power my
>TC.  I'm wondering if there is any problem switching leads around for
>110V/60Hz ... running the secondary in series, and the primaries in
>parallel.  I figure since its a 50Hz transformer, it's already about 20%
>overengineered, and the secondaries takes 15KV at .03A, so I should end
>up with output of 15KV at .03A (rather than the 0.03A I get in Hong Kong).
>
>I'm looking for a sanity check on my logic, just to make sure that I
>don't bring them to the States only to burn them up.  Clearly, I can
>keep the current arrangement, and just precede them with a 110 to 220V
>stepup transformer.
>
>Chris Westland
>
>--
>
>_