Re: MMC cap bank

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

Original poster: "Dr. Resonance by way of Terry Fritz <teslalist-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>

The rating you specified alone should tell you it won't work for a long
time --- perhaps short time until you start blowing them.

The pig is 14.4 kV and you intend to run the cap string at 900V x 10 which
only equals 9 kV.  Failure is certain --- the only question is when.

With NST's we use 13-14 caps per series.  With pole xmfrs I would recommend
around 16 caps per series as an absolute min.

Less than this will eventually begin to failure.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913

 > Hello all,  I'm constructing my first mmc bank. Cap's are .056 uf. each,
 > 2500 vdc. 900 vac. each. 10 per string .0056 total per string, a total of
 > 10 strings max. .056 possible, probably tap out a smaller value at first
 > although. Cap's are digi-key # BC2048-ND, AC and pulse double metallized
 > polypropylene film. Bleeders are 10 megohm 1/2 watt. Using 14.4 kv. 10
kva.
 > pig, MOT. ballast on primary, asynchronous gap, speed is ajustable so it
 > may be in synch. at some point. Will it last?  Comments? Thanks    Arcing
 > in Wisconsin.......