Re: 16 kV 250 mA TC transformers

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

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


NSTs are not really made for TC HV work.  Oil will outlast potting every
time.  You are not really comparing apples with apples.  We are adding a lot
of extra mylar in the core to coil separation space so they should be bullet
proof even when pushed a bit.

Dr. Resonance

 >
 > Would you care to give contact names and numbers?  I'm sure some of us,
 > especially the European and Asian members, would be interested in setting
 > up a bulk buy of sorts to forgo the cost of shipping a 100 pound, 18" cube
 > overseas.
 >
 > Mark Broker
 > Chief Engineer, The Geek Group
 >
 >
 >
 > On Sat, 25 Sep 2004 11:48:40 -0600, Tesla list <tesla-at-pupman-dot-com> wrote:
 >
 > >Original poster: "Kreso Bukvic" <kreso.bukvic-at-kc.htnet.hr>
 > >
 > >Thats to pricey! I just contacted one company that makes HV trannies here
.
 > >They can make a NST like that for about 350 $ opened or they can pot it
in
 > >epoxy.
 > >
 > >Best Regards
 > >
 > >KReso Bukvic
 > >----- Original Message -----
 > >From: "Tesla list" <tesla-at-pupman-dot-com>
 > >To: <tesla-at-pupman-dot-com>
 > >Sent: Friday, September 24, 2004 5:51 PM
 > >Subject: 16 kV 250 mA TC transformers
 > >
 > >
 > >  > Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com>
 > >  >
 > >  >
 > >  > I finally received all the quotes from my vendors for core and coils.
 > >  >
 > >  > Core cost exceeds $450 each and coil sets approx $310.00.
 > >  >
 > >  > Selling price will be $775.00 for each xmfr.  That is a bit steep but
when
 > >  > you consider not using a $400 external current reactor it is
 > >  > reasonable.  The cores are laser cut for accuracy.  They are
specifically
 > >  > designed for oil immersion, and should hold up well as extra mylar is
 > >  > extended out of each coil so the CT connection can be connected
together
 > >if
 > >  > desired for single ended operation.  I expect to operate our units in
the
 > >  > standard
 > >  > CT grounded configuration.
 > >  >
 > >  > Core dimensions are 8.75 x 12 inch and coils stick up approx 3.5
inches.
 > >I
 > >  > will determine the exact enclosure size necessary after I can
assemble and
 > >  > test a unit.  I expect to have the coils in 2 weeks and cores in 3
weeks,
 > >  > so near end of Oct. is best guess.
 > >  >
 > >  > Dr. Resonance
 > >  >
 > >  > Resonance Research Corporation
 > >  > E11870 Shadylane Rd.
 > >  > Baraboo   WI   53913
 > >  >
 > >  >
 > >  >
 > >  >
 > >
 > >
 > >
 >
 >
 >
 >
 >