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Re: [TCML] Need some advice on 150kva sgtc

Big machines like this are typically less efficient than there smaller brothers and sisters. I have not taken the time to run the numbers on the info you provided, but if the system is well balanced and in tune and pulling 40kva, I would expect to see 20-25 foot long arcs at minimum. 
The height of the coil will also be a limiting factor to some degree...
I assume from your question that you are not happy with the performance or it did not meet your expectations? 

Kind regards,

carlos

On 2015-01-02 06:03, vam@xxxxxxxxx wrote:

Me and some friends built this coil. It's total height is 5 meters. the
donut is 2,60 by 60 cm. the coil is 65 cm dia with 1200 turns of 2.5^2mm 
installation wire. about 3.6 meter winding length. Cap, DR resonance
100nF, 80kv 4 in parallel.
We feed it with a 180kva 10kv yz5 transformer. Rectify the lot to 16kv.
ballast ensures 32kv on the cap. at 200 bps we draw 50-60 amps per fase. 
so roughly 40 kw. Max bps is 700.
Now the question. What kind of spark length should be possible from this 
coil?

Picture of the coil.
https://www.facebook.com/photo.php?fbid=671287332969054&set=a.110176789080114.14601.100002633816524&type=1

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