Re: Ebay caps

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

Original poster: "Lynn Massie-Southerland by way of Terry Fritz <twftesla-at-qwest-dot-net>" <owlster-at-worldnet.att-dot-net>

FYI
If a person is looking for a deal on caps you can find 5KV caps in
contractors yards from a tear out, maybe even free. Do be weary of PCB's in
the US their should be a Green Sticker on old industrial caps saying they do
not contain PCB's.
As far as caps on a utility pole most of the time the cap will be a
rectangular box with three insulators and one cable coming off a insulator
going to one of the three phases. If you see a pole with three boxes each
with two insulators in series with each phase this is a emergency clearing
switch, the thing that makes your lights flash three times before they go
out.
Neil

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, June 16, 2001 3:26 PM
Subject: Re: Ebay caps


> Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>
>
> Hi Johnathon,
>
> High voltage caps are used to correct for power factor in transmission
lines
> (actually lower voltage (like 14400) distribution lines).  Since they are
at
> higher voltage, they can use less capacitance to do the same work.  Those
> relatively small caps would be huge if they had to do the same job at
220VAC,
> so they try and add them in the higher voltage parts of the system to keep
the
> power factor closer to 1.
>
> Transmission lines are naturally inductive and there is no need to add
more.
> Sometimes you do see giant inductive coils in the really high voltage
(220kV
> and such) lines, but those are to block radio control signals that control
the
> substation equipment.  High voltage transmission lines use radio signals
down
> the lines to control breakers and signal fault conditions.
>
> Apparently, some people have been able to get these distribution line caps
to
> work for Tesla coils buy tearing them apart and rewiring the guts (beware
of
> PCBs in older ones).  "I" would think a nice MMC would be vastly easier...
I
> am sure the line caps are also much higher loss but that may be made up
some by
> the fact that they are larger.
>
> Cheers,
>
>         Terry
>
> At 10:17 PM 6/15/2001 -0400, you wrote:
> >
> > Hi, I always thought those were giant chokes... are those caps in series
with
> >
> > the trans. line? what would the purpose of them be? are there any chokes
in
> > trans. lines?
> >
> > -Jonathon Reinhart
> >
> >
> >
> > In a message dated 6/15/01 10:21:39 AM Eastern Daylight Time,
> > tesla-at-pupman-dot-com writes:
> >
> >
> >>
> >> Hi Jack
> >>
> >> You are correct about what I called transmission line caps. When I was
a
> >> kid, I had maybe 10 such caps. They had big terminals, but I don't
recall
> >> them as being very heavy. I kept them around mainly for show.
> >>
> >> Godfrey Loudner
> >>
> >> > -----Original Message-----
> >> > From:    Tesla list [SMTP:tesla-at-pupman-dot-com]
> >> > Sent:    Thursday, June 14, 2001 7:46 PM
> >> > To:    tesla-at-pupman-dot-com
> >> > Subject:    Re: Ebay caps
> >> >
> >> > Original poster: "Jake Draper by way of Terry Fritz
<twftesla-at-qwest-dot-net>"
> >> > <cybermecium2-at-home-dot-com>
> >> >
> >> > Are trasmission line caps those sqaure boxes you see once in a while
on
> >> > top of
> >> > power poles? There are usually about 3-6 of them and sometimes they
are
> >> > with
> >> > TINY "Pole Piglets" Are these what transmission caps are?
> >
> >
>
>
>
>