RE: [TCML] 35 KVA Vacuum Tube Tesla Coil

["Phil Tuck" <phil@xxxxxxxxxxx>]

Roger wrote>>
"I found it hard to believe myself but I'm pulling 170 amps at 230 Volts.
After a few runs the transformer gets warm but not smoking hot."


"Smoking" is the word I was thinking of actually. In the video at around 2
minutes in where you focus on the transformer, the tranny's input lead
coming in from the right hand side looks like ordinary flex (13 / 15 amp) I
would have thought that 170 amps would melt the insulation as quick as you
could look at it. Maybe your ammeter and PF issues are distorting things? It
has to be good news for you though if that's the case.
Regards
Phil Tuck

www.hvtesla.com



-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Roger Smith
Sent: 06 July 2011 10:42
To: Tesla Coil Mailing List
Subject: Re: [TCML] 35 KVA Vacuum Tube Tesla Coil

On 7/5/2011 3:50 AM, Phil Tuck wrote:
> Roger,
> It's a change to see a nice sized discharge from a valve coil, but I 
> have just realised that you said 35 kvA and not 3 and a half kvA! That 
> means you are pushing the tranny by a factor of 7. Is this the reason 
> you kept the run-time relatively short, or is that for the valve's sake?
> The actual physical size of the tranny looks relatively small against 
> my own 5kVA core (which is 16 inches high and weighs 90 pounds) and I 
> am surprised the core cross section isn't completely saturated.
> The fact it is out of its oil as well (mainly for cooling rather than 
> insulation in this instance) certainly makes it a well-built tranny to 
> my mind.
>
> Regards
> Phil Tuck
>
> www.hvtesla.com
>
>
>
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On 
> Behalf Of Roger Smith
> Sent: 04 July 2011 10:46
> To: Tesla Coil Mailing List
> Subject: [TCML] 35 KVA Vacuum Tube Tesla Coil
>
>       I got a hold of a big ceramic triode (3cx10000a3) a few years 
> ago and I finally built a tube coil with it.  It is powered by a 5 KVA 
> pole transformer at up to 35 KVA and I am now getting 50"  fat bushy
sparks.
>        Here is a link to the video on it 
> http://www.youtube.com/watch?v=B8536fYHvGM&feature=feedlik
> <http://www.youtube.com/watch?v=B8536fYHvGM&feature=feedlik>       I
> haven't seen any other  VTTCs like it so It's hard for me jug the
> efficiency of it.   Any suggestions are welcome.
>
>       Roger
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Hi Phil ,     I found it hard to believe myself but I'm pulling 170 amps 
at 230 Volts.   After a few runs the transformer gets warm but not 
smoking hot.

     Roger
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