RE: Re-configuring X-Ray Transformers

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

Original poster: "Loudner, Godfrey by way of Terry Fritz <twftesla-at-qwest-dot-net>" <gloudner-at-SINTE.EDU>

Hi Kristian

Since you have already disassembled one of the three-phase x-ray
transformers, I was wondering if you found any of the materials useful for
tesla coiling. I got hold of the remains of a 150kV/1000mA three-phase x-ray
transformer after it was disassembled. The remains consist of three
secondary coils, three primary coils, and a mass of laminations. Some of the
laminations are 3.75 inches wide and 24 inches long. The primary wire is so
thick, I have great difficulty bending the stuff with my hands. Some
possible uses are below.

Secondary coils-----------------wire for winding a tesla coil secondary.

Primary coils----------------------wire for making an inductor

Laminations-----------------------core material for a sliding core inductor

Diodes-------------------------------DC power supply application

three-phase powerstat---------breakup into single-phase variacs

Have you tried any of these?

Godfrey Loudner 
 

   

> -----Original Message-----
> From:	Tesla list [SMTP:tesla-at-pupman-dot-com]
> Sent:	Thursday, January 31, 2002 12:56 PM
> To:	tesla-at-pupman-dot-com
> Subject:	Re: Re-configuring X-Ray Transformers
> 
> Original poster: "Kristian Ukkonen by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <kristian.ukkonen-at-iki.fi>
> 
> 
> Tesla list wrote:
> > Original poster: "Loudner, Godfrey by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <gloudner-at-SINTE.EDU>
> > There's a heck of a lot of wire in those HV windings, making for much
> > impedance. You would need 100kV impressed on the HV windings to
> circulate
> > the normal full-load current of 400 mA. The 20,000 volts is not enough
> to
> > overcome the impedance to circulate a current of 2 amps. Turns must be
> > removed from the HV windings to lower the impedance.
> 
> My biggest x-ray transformer (weight >200 kg without oil, dimensions
> of oil tank about 1m*1m*1.5m, had two cx5184 100kV 2kW triodes etc.
> goodies) 
> that I have disassembled, has VERY thick secondary wire. Something like 
> 0.5 mm dia.. Also, the secondaries were freely configurable either star
> or
> delta - as well as primary. The secondary coil outer diameter was about
> 25cm..
> 
> Often, when size is not a constraint, quite thick magnet wire is used
> for secondaries to get large radius for wire and easy to wind. 
> After all, dimensions are large anyway because of the voltage (>200 kV).
> 
> I have got many for scrap price of iron from junk yards,
> without oil, of course. The older ones are dumped all the time.
> 
> I have VERY large variac too from the control panels.
> Largest is >100kg weight 3-phase beast. Wire is about 1.5mm*15mm
> form wire. Has to handle the large instantaneous current too
> during short exposures, but about 0% cutycycle at longer intervals.
> 
>   Kristian Ukkonen.
> 
>