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Registered Member #1810
Joined: Thu Nov 13 2008, 02:46PM
Location:
Posts: 14
Hi there
Is there such a thing in existence as a capacitor that would be able to provide long damped sine discharges in the other of miliseconds, and be able to work in the range of up to 1kA (or anything close) and few kilovolts (I guess we are talking about up to 1 MVAR here), and provide capacitance of around 200 microF or more.
And if not, how far off am I, what is the closest thing out there?
Registered Member #1774
Joined: Wed Oct 22 2008, 02:51AM
Location:
Posts: 135
Im sure there probably is but it would just depend on the size of your wallet... These might be what you want but I beleive they cost tens of thousands of dallars each;
Registered Member #1810
Joined: Thu Nov 13 2008, 02:46PM
Location:
Posts: 14
Ok thanks, and can you (or someone) please take a look at this product page, and help me out with a few questions:
1. Is there any reason why a capacitor such as this (usually used for AC power) couldn't be used in regular charge-discharge operation?
2. Capacitance is not rated, but can it be safely calculated from max power rating and max voltage rating? (using capacitive reactance)
3. If so, how come the current rating doesn't fit the power rating? How are you suppose to achieve the max power rating without having adequate current
Registered Member #1774
Joined: Wed Oct 22 2008, 02:51AM
Location:
Posts: 135
1. Dont see why not as long as its used inside the reccomended operating range
2. Not that I know of, I would just use a capacitance meter, unless you are looking to order one? maybe they build it to your specs?
3. Dunno
4. Also dont know, dont see how it matters anyway its only 2v. maybe it has such high leakage current it would be inneffective below this voltage? (why would you use a Kv capacitor with lower than 2v anyway...)
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
I would guess that the kind of industrial capacitors with relevant compliance certificates shown in your link would be made-to-order to the customer's specifications, which is why no capacitance values are given.
Expect to pay a very great deal for the larger values - thousands of pounds each perhaps.
Registered Member #1381
Joined: Fri Mar 07 2008, 05:24PM
Location: Hungary
Posts: 74
Dont want to hyjack the thread (just asking about something relevant:) )
Maybe someone could tell me a bit more about this capacitor
Would like to use one as a TC primary cap (if it could be used for that purpose) From MP i would think this is some Oil capacitor with Metallized "Something" as dielectric (paper , poly... etc) About the voltage rating those seem to me as dc volatge ratings (cause theres just V- , usualy V~ shows ac rating) no idea what DB GSC nor KB GSC could mean
It's an odd thing that i couln't find anything about SEL capacitors on the net (seen some "smaller" ones in excimer lasers made by Lambda Physik)
Registered Member #538
Joined: Sun Feb 18 2007, 08:33PM
Location: Finland
Posts: 181
Mathias wrote ...
Dont want to hyjack the thread (just asking about something relevant:) )
Maybe someone could tell me a bit more about this capacitor
Would like to use one as a TC primary cap (if it could be used for that purpose) From MP i would think this is some Oil capacitor with Metallized "Something" as dielectric (paper , poly... etc) About the voltage rating those seem to me as dc volatge ratings (cause theres just V- , usualy V~ shows ac rating) no idea what DB GSC nor KB GSC could mean
It's an odd thing that i couln't find anything about SEL capacitors on the net (seen some "smaller" ones in excimer lasers made by Lambda Physik)
Too low voltage rating, too high capacitance and wrong capacitor type (oil cap), no good for a tesla coil tank capacitor.
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High power capacitors
