Re: 19.9 kV 10KVA pole pig

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

Original poster: DRIEBEN-at-midsouth.rr-dot-com 

Hi Adam,

I would be inclined to concur with you on that. However, I
don't think the transformer rebuilder would have wanted to
build a 19.9 kV pig with  14.4 kV bushings, even if I had
specifically requested for it to be built like that, due to
liability issues. I'm sure the electrical codes are quite
stringent on the construction of utility distribution trans-
formers and if they didn't follow those guidelines in buildiing
one and something bad happened, then they'd be fully liable.
Besides, the vast majority of their customers are electrical utility
companies who WILL be operating the transformers outdoors ;^)

BTW, the salesman was fully aware of my intended "use" for the
transformer and was still completely "cool" about it ;^) He
even mentioned a local man named David Shaw that had purchased
a couple of transformers from them for Tesla coil building
purposes. Mr. Shaw had shown him (the salesman) his Tesla coil
setup last Halloween and the salesman thought that it was to-
tally cool! I have a good buyer realtionship with these guys
and I would rather keep it that way. I don't want for this
transformer supplier to become another T&R! For that reason,
I'm not going to disclose there name and address on this
list. Sorry, but I will only give that info to people that
I personally know and trust. It's ashamed that it has to
be that way, isn't it ;^(

Finally, is there a David Shaw on this list in "lurk" mode
that resides in or near the Greenwood, MS area? I don't re-
call ever seeing that name on this list but anyone who is
purchasing more than one pole pig for coiling is obviously
seriously into it ;^|

David Rieben

----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
Date: Tuesday, April 6, 2004 12:46 pm
Subject: Re: 19.9 kV 10KVA pole pig

 > Original poster: Yurtle Turtle <yurtle_t-at-yahoo-dot-com>
 >
 > If you only operate the pig indoors or when dry,
 > there's probably no real need for the huge bushings on
 > a custom built pig (besides the fact that they look
 > cool). Just look at the terminals on the average PT.
 > There aren't any.
 >
 > Adam
 >
 > --- Tesla list <tesla-at-pupman-dot-com> wrote:
 > > Original poster: DRIEBEN-at-midsouth.rr-dot-com
 > >
 > > Hi Newell,
 > >
 > > I sold a lot of my Tesla/high voltage stuff a few
 > > months ago, including a
 > > 10 kVA, 14.4 kV pig that list member Steve Vance
 > > purchased from me. My main
 > > reason for selling the stuff was that I just don't
 > > have the facilities to
 > > make 10 ft. lightning bolts without distrubing
 > > neighbors and the sensitive
 > > electronics in my own house. However, I recently
 > > started suffering "pork
 > > withdrawal" and ended up calling up my source for
 > > rebuilt PDTs and asked
 > > them to build me a 15 kVA pig. I was initially
 > > wanting to go for a 19.9
 > > kV pig as well but found out that the larger HV
 > > bushings alone was going
 > > to make it cost an extra $140. It seems that 14.4 kV
 > > is the standard pri-
 > > mary voltage that they handle and they had plenty of
 > > 14.4 kV bushings lying
 > > around the shop but the 19.9 kV bushings would have
 > > to be special ordered.
 > > Also, it takes more insulation and more smaller
 > > diametered copper wire for
 > > the high voltage side of a 19.9 kV pig than a 14.4
 > > kV pig and this also
 > > cost a little more. So, if you can get a 19.9 kv pig
 > > at a decent price, I
 > > would say go for it! The extra cost is the only
 > > reason that I didn't and
 > > I suspect that may be the main reason that other
 > > coilers stick more with
 > > the 14.4 kV pigs as opposed to higher voltage ones.
 > > Also, corona standoff
 > > starts to become a real issue at voltages at or over
 > > 20 kV.
 > >
 > > David Rieben
 >
 >
 >