Re: potential transformer question

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net> 


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, October 07, 2003 8:28 PM
Subject: Re: potential transformer question


 > Original poster: dhmccauley-at-spacecatlighting-dot-com
 >
 > You are playing with fire there.  Assuming the transformer is 240VAC, that
 > is 2x the rated voltage.  Thats a big NO NO unless you want to ruin your
 > "expensive" transformer
 > in a very short time.  BIL is NOT the DC Hi-Pot level.
 > BIL is short for BASIC IMPULSE LEVEL.

There's also that turns per volt/saturation issue... put 500V into a 120V
transformer and you'll almost certainly be saturating it...


 >
 > So in short, if you put 500V into your transformer, YOU WILL DESTROY IT!
 > Maybe not right away, but pretty quickly, especially if its a 120VAC input
 > transformer and not a 240VAC
 > input.
 >
 > However, you can push these to 2x the rated power for short periods.
 > Typically, 1.5kVA potential transformers can easily run at up to 3.5kVA
for
 > short periods.


But that 2x rated power is twice rated current at rated voltage, not 2x
voltage..