Re: 270V to 13.8kV, 6.5MVA transformer :))

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "J. Aaron Holmes" <jaholmes@xxxxxxxxxxxxxxxxxx>


Great idea!  My local power utility offers discounted
service to customers who provide their own
transformation.  Unfortunately, that only applies to
customers in commercially-zoned areas...currently.
Time to petition for a rules change, I guess!! :))
'course, even then, the best I could get would be
7.2kV...maybe 12,470Y three-phase if all three phases
are actually buried under my lawn, which I kind of
doubt (having seen the wiring in some newer areas of
the neighborhood).  ...and, unfortunately, most of the
neighborhood service entrances are fused for 100A.
Bummer.  I know this because they replaced the pole at
the entrace recently and all the equipment was left on
the ground overnight, so of course I had a closer look
:)  I don't know if I could make due with only 720kVA
:))

73,
Aaron, N7OE

--- Tesla list <tesla@xxxxxxxxxx> wrote:
> Original poster: "Mike" <mike.marcum@xxxxxxxxxxxx>
>
> Good grief, if you need that much power seems like
> it would be easier to
> get a giant ballast (prob substation line reactor,
> usually cheaper than
> equiv. power tranmsformers, especially used, or get
> a few pigs and
> parrallel/series the secondaries) and hook up your
> TC/jacob's ladder
> directly to the power lines (assuming you could get
> a 35kV-class rated
> meter to keep the power co. and law enforcement
> happy). That way no need to
> step it down with dozens of 1000MCM cables and back
> up again. Of course
> building and running that 6500 kVA TC is a whole
> other beast. Heck the arcs
> would be big enuff with just a jacobs ladder, prob
> way over 150' assuming
> it wasn't windy. Finding electrodes that wouldn't
> melt/erode with 34.5kV
> and 188A+ (or worse, 14.4kV and 451A+) would be a
> chore tho. Hmmm, maybe if
> you did the above with 345 kV transmission lines
> instead, only 18.8A then.
> Darn, I need to win the lottery or ask Bill Gates
> for some of his $47B.
>
> Mike
> ----- Original Message ----- From: "Tesla list"
> <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Saturday, May 07, 2005 8:22 PM
> Subject: 270V to 13.8kV, 6.5MVA transformer :))
>
>
> >Original poster: "J. Aaron Holmes"
> <jaholmes@xxxxxxxxxxxxxxxxxx>
> >
> >You don't often see these voltages and this much
> power
> >in a single transformer, so act now:
>
>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=71391&item=7514341372&rd=1
> >
> >After you pick it up, call your local power utility
> >and tell them you want 24000-Amp service (or the
> >closest they can come to it).
> >
> >Pricing seems a little steep for a 35-year-old
> >transformer, though.  Darn.  Guess it won't be mine
> >:((
> >
> >73,
> >Aaron, N7OE
> >
> >
>
>
>
>
>