Re: Overvolting an NST? (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sat, 20 Oct 2007 18:28:37 -0700
From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Overvolting an NST? (fwd)

Yes, if core saturation occurs, lower the variac voltage. Measure the 
input current. This will be apparent on the meter. Keep the variac below 
this level if you see the current spike. Hopefully won't occur, but it 
won't be too far away. So it's best to keep watch. Well stated Ed.

Take care,
Bart

Tesla list wrote:
> ---------- Forwarded message ----------
> Date: Sat, 20 Oct 2007 17:44:49 -0700
> From: Ed Phillips <evp@xxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Overvolting an NST? (fwd)
>
>     So far no one has mentioned core saturation.  As you exceed the 
> rated primary voltage you'll reach a level where the magnetizing current 
> goes up rapidly and the output doesn't rise much.  You're proposing 25% 
> overvoltage and I would suspect that voltage would be well into this 
> region and that the transformer core will get hot pretty quickly even 
> under no load conditions.
>
> Ed
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