Re: Here pig pig pig (unpotting)

• To: tesla-at-pupman-dot-com
• Subject: Re: Here pig pig pig (unpotting)
• From: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
• Date: Wed, 23 Sep 1998 21:44:58 -0600
• Approved: terryf-at-verinet-dot-com

A query:

> Date forwarded: Wed, 23 Sep 1998 19:06:14 -0600
> Date sent:      Wed, 23 Sep 1998 17:24:40 -0600
> To:             tesla-at-pupman-dot-com
> Subject:        Re: Here pig pig pig (unpotting)
> Forwarded by:   tesla-at-pupman-dot-com
> From:           Tesla List <tesla-at-pupman-dot-com>

> Original Poster: Daniel Hess <dhess1-at-us.ibm-dot-com> 
> 
> Actually, to heat the core of the nst so that it will release easily, leave
> the
> secondaries open. Shorting the secondary will max its current but since its
> current is limited by its leakage, will run coolest. In service,
> underloading a
> nst, and open secondaries is the maximum underload, is the fastest way to
burn
> one up, (with the possible exception of putting it into Tesla Coil duty).
But
> 20 to 30 minutes of open secondaries will cause them to warmup enough to
> provide easy release without cuasing any damage.
> 
> My .02 worth,
> Daniel

How are you going to get heating in the secondaries with no secondary 
current? With the secondary shorted, its internal resistance combined
with rated current ought to cause a fair degree of heating.

Malcolm

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