Re: PFC Question/GFI NSTs

[Terry Fritz <twftesla-at-xxxxxxxxxx>]

Hi Jason,

        500uF is a pretty large cap for a PFC.  Be sure it is rated for "Motor
Run" and continuous 60Hz AC duty.  500uF will compensate about 2500 watts of
NSTs.  If you are running less, a PFC cap of that size may do more harm than
good.  If you have a static gap system, you may want to see the NST/PFC cap
study bellow:

http://hot-streamer-dot-com/TeslaCoils/Misc/NSTStudy/NSTStudy.htm

        In another post you mentioned:
"Apparently my state has passed new regulations regarding Neon signage. When
trannies are replaced or upgraded they need to be replaced with a new "smart"
trannie. These new trannies have a built in GFI, if it senses a "unacceptable
current condition" it shuts off the juice." 

Don't worry, we got plans for that! ;-))  The subject came up last year.  It
has not become a problem yet since all old NSTs don't have it but there are a
number of ideas to "fix" the transformers when we get to that point.

Cheers,

        Terry

At 02:52 PM 11/12/2000 -0800, you wrote: 
>
>     Got a quick question. I have never used a PFC in my system, but with the
> amount of transformers and capacitance that I now have availble I'm gonna
> need one.
>     I have a Maxwell 500uF at 1,500V cap but I am wondering the exact way to
> hook it up and its placement in the system. I am assuming that the cap is
> placed in between the hot and neutral of the AC line, but should it be placed
> before or after the Variac? I would think that between the Variac and
> transformers would be the best placement and would cut down on stress to the
> variac itself (I will be running it at its maximum capacity).
>     If someone can help me out with this it would be greatly appreciated, it
> is the only thing holding me up in the construction of my new power cabinet.
>  
>         Thanks All,
>                             Jason Zuberer