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Re: Pig questions

Subject: 
           Re: Pig questions
      Date: 
           Sat, 29 Mar 1997 23:23:48 -0500
      From: 
           "Edward J. Wingate" <ewing7-at-frontiernet-dot-net>
        To: 
           tesla-at-poodle.pupman-dot-com
References: 
           1 , 2 , 3


Edward J. Wingate wrote:
> 
> Edward J. Wingate wrote:
> >
> > Tesla List wrote:
> > >
> > > Subject:
> > >         Re: Pig questions
> > >   Date:
> > >         Fri, 28 Mar 1997 11:09:54 -0500 (EST)
> > >   From:
> > >         Esondrmn-at-aol-dot-com
> > >     To:
> > >         tesla-at-pupman-dot-com
> > >
> > > In a message dated 97-03-27 12:52:16 EST, you write:
> > >
> 
> < major snip>
> 
> > Ed & Stan,
> >
> > The power companies regularly run pole transformers up to 180% of
> > nameplate ratings in normal service conditions before changeing them out
> > for a larger nameplate KVA rating. The reason being that they don't like
> > to pay for the extra energy losses incured by having to energize the
> > core of a larger KVA rated transformer if it isn't necessary. The power
> > company has to pay to keep the transformer energized 24 hours a day even
> > if the customer is only drawing power from it for a small fraction of
> > that time. Larger core equals higher current to energize the core. These
> > babies are designed to put out full rated power day in and day out for
> > years in hot weather or cold, and to take short term overloads far
> > exceding their nameplate ratings, so anything we can draw, in Tesla coil
> > service, right up to the point of core saturation, has little effect on
> > them. A 5 KVA distribution transformer has a chart rating of 20.8 amps
> > at 240 volts single phase and I have personally run a 5 KVA transformer
> > between 60 and 70 amps for 15 to 20 minutes at a time. That translates
> > to over 1000 MA on the high voltage side! I have yet to hear of anyone
> > blowing a pole transformer in Tesla use, so, wail away and don't worry,
> > they can take the abuse. Just be careful, the shock from a neon
> > transformer hurts ( personal experience), but with a pole transformer
> > you won't get a second chance!! They are not for newbies.
> >
> > Happy and safe coiling,
> >
> > Ed Wingate
> 
> As a little post to this post. Pun intended. I NEVER run any type of
> chokes or bypass capacitors on any of my pole transformer powered
> systems, just a safety gap set at about 1". Another plus with pole
> transformers.

Ed