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Re: Primary Flashover
to: Rod
The lowest turn of the sec should be elevated 1 1/2 inches above horizontal
plane of primary. Spacing from pri to sec should be 1 1/2 inches also. A
7/8 turn strike protector should be at outer edge of primary. Proper
coupling and end of problem.
DR.RESONANCE-at-next-wave-dot-net
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> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Primary Flashover
> Date: Saturday, November 21, 1998 8:36 PM
>
> Original Poster: RODERICK MAXWELL <tank-at-magnolia-dot-net>
>
> Last night I decided to really give my six inch coil a real workout. I
> set the system up and cranked the variac up to 100% with one of my
> smaller toruses attached. Everything worked out fine, got 36" discharges
> easily. Then I decided to change the toroid to a much larger one to see
> if I could make it breakout. As soon as the gap fired there was a bright
> light at the base of the secondary, and no sparks from the torus. At
> first I was not sure were the light was comming from and thought the cap
> was blown! After breaking out in a cold sweat I began to search around
> for the problem. The first turn of the primary had flashed over to the
> base of the secondary leaveing a nice burn on the side of the coil form!
> Luckily the damage was only cosmetic. If I had been running at 5Kva it
> would have blown a hole in the secondary. I don't want to change the
> coupling by removing the first turn of the primary or raising the
> secondary. Does anyone have a solution?
>
>
>
> Frankensteins Helper
> Max
>