Re: PDT (Pig) failure modes

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

Original poster: "Brian by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ka1bbg-at-webryders-dot-net>

I have to agree with your statement. the transformer in front of my house
was installed in 1946 and other than a few hours while they replaced the pcb
oil with castor oil, its taken a few big hits and worked all those years and
still going..one lightning hit blew most of the yard arm and wires off the
pole. it also burned the ends of the threads on the bolts making repair very
difficult. It's still there or i wouldnt be "here". cul brian f.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, September 20, 2002 1:00 PM
Subject: Re: PDT (Pig) failure modes


> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<Tesla729-at-cs-dot-com>
>
> Ken, all,
>
> I realize ANYTHING manmade will eventually wear out and ultimately
> fail, but it seems to me that Dave's pig failed LONG before it should
> have, due to aging! Pigs (PDTs-if you're politically correct:-) are de-
> signed for the most rigorous electrical and environmental operation
> and are designed to operate in these harsh environments for 20 to
> 30 years without a hitch. Occasionally there will be a "lemon", but
> the vast majority of them are like a Timex watch - they'll take a lick-
> in' and keep on tickin'. Like Terry says, our "coiling" doesn't really
> even come close to challenging the BIL voltage design envelope of
> these beast :-) They're designed to withstand direct lightning hits
> (with the help of  lightning surge arresters) on their primary line
> inputs and the kickbacks of Tesla coiling are quite puny in energy
> compared to to lightning bolt-to-line hits ;-) BTW, lightning surge
> arresters make good substitutes for safety gaps.
>
> Coiling in Memphis,
> David Rieben
>
>
>