Re: 18,000. AMP high energy Cap bank

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Mike" <mike.marcum@xxxxxxxxxxxx>

My guess is that they are calculated with the internal esr/esl as a load, 
or they use some sort of amp probe similar to the ammeter clamps and just 
get a close estimate from the current's magnetic field intensity.
Usually the caps are simply built to witstand the 20kA pulses, or the cap 
is redesigned to have lesser peak current. I would think that trying to 
limit a certain cap to less than it's rated peak current would require a 
huge inductor/resistor, especially the 500-lb 100+ kJ ones.

Mike
----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, December 16, 2004 9:59 PM
Subject: Re: 18,000. AMP high energy Cap bank


> Original poster: FIFTYGUY@xxxxxxx
> In a message dated 12/11/04 9:46:06 PM Eastern Standard Time, 
> tesla@xxxxxxxxxx writes:
> The capacitors weigh about 100 lbs each.  Caster
> oil fill caps.  Rated 18,000. AMP High Energy pulse capacitors.   3 
> capacitors in parallel is 54,000. AMPS.
>
>     How does one measure these very high current levels to any degree of 
> accuracy?
>     How does one limit these current levels? If a energy discharge cap 
> system has an ultimate safe rating of (say) 20kA, how does one make sure 
> that current isn't exceeded during an experiment that vaporizes a specimen?
>
> -Phil LaBudde