Re: MMC's and heat.

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

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi Rick,

After six minutes, the currents are just causing some resistive heating due to
the losses in the caps.  Since so much time goes by, the caps are probably
heating pretty evenly without the centers getting hot enough to melt the poly
witch is the real concern.

I "think" you are pretty safe but you are getting into the be a little bit
cautious region.

Cheers,

        Terry


At 05:25 PM 9/23/2001 -0400, you wrote: 
>
> Hello Fellow Coilers, 
>
>         Can anyone tell me weather is normal for a MMC bank to get warm after
> a six minute run? The cap bank is rated for 12,500 volts DC at .01 uF, and I
> am using it with a 9/30 transformer. Oh well crap! Never mind. My 9000
> transformer is running at 12,726VRMS, and my cap bank should only be good for
> around 8840VAC. Well, I guess a little warm is not so bad for this bank then.
> Heck, I am glad it did not blow. I tested the capacitance before and after a
> six minute run, and it went from 10.13nF to 10.10nF, so I guess that is not
> so bad? Someone discuss this with me. Thanks Coiling Pals. 
>
>                                                 Rick Harris