Re: Re-configuring X-Ray Transformers

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

Original poster: "Jack King by way of Terry Fritz <twftesla-at-qwest-dot-net>" <speakernut-at-yahoo-dot-com>


--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "James T by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <jamest2000-at-att-dot-net>
> 
> Hi Jack,
> 
> > Next, I plan to REMOVE somewhere around 60% of
> each
> > side of her secondary, lift the midpoint
> connection,
> > then paralell the two secondary windings, in
> phase.
> >
> > I'm shootin for somethin between 15-25 KV -at- about
> an
> > amp output with about 30% duty cycle.
> 
>   That was my exact plan with a giant 60KV Xray
> transformer. The problem
> came about when I lifted
> the midpoint connection. This connection is not
> insulated for full floating
> secondaries - even in
> oil-.You're looking at 15-20KV PER secondary, as
> opposed to half that for
> the midpoint grounded.

Hmmm Is it (was it) flashing over to the core? or
where? I SUPPOSE I could just leave it midpoint
grounded, but I fear the wire awg size may be a hair
too small (pun intended) to sustain even the short
term current I need (sometimes around 800 ma - 1 amp.
Maybe I'll just end up making a cool spark gap in the
shop turned lab.

Thanks...

Jack

>   Mine sure looked looked there was plenty of
> insulation, much more than an
> NST, but the
> additional current made the arc over problem that
> much worse.
>   I would suggest that you at least test it
> initially with the secs.
> connected together, then go
> from there. Once mine started to arc over, I tried
> and tried but could not
> prevent it from
> continuing. Had to rewind it.
>   BTW mine was coated with shellac, so I soaked it
> for a week in denatured
> alcohol. that loosened
> it up enough to peel the layers off in a controlled
> way.
> Regards,
> James Cart

Was your's shellaced, then submerged in oil?
> 
> 
> 
> 


__________________________________________________
Do You Yahoo!?
Great stuff seeking new owners in Yahoo! Auctions! 
http://auctions.yahoo-dot-com