Re: **Does anyone have CDE 942 series (or similar) capacitors? - MMC Voltage

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Mddeming@xxxxxxx 

   In reality, operating at the DC rating is already operating at 
333% of spec. Your 20% increase is really 400% of spec. The further 
you push it, the more you are courting disaster. The fact that a test 
case went to 950% before total failure does not mean that this is a 
safe continuous operating range.
    It's a pay me now or pay me later situation. If you get the 
absolute minimum number of caps now, you WILL be spending more on 
replacements sooner. It is usually a smart idea to design a first 
project a little more conservatively than what some "vetrans" have 
discovered they personally have been able to get away with (so far).

Matt D.

In a message dated 8/5/05 1:56:22 P.M. Eastern Daylight Time, 
tesla@xxxxxxxxxx writes:
Original poster: Jimmy Hynes <jphynes@xxxxxxxxx>

Well, if you're gonna do everything withing the ratings, it's AC, so
that's 600V RMS/cap :P They've been shown to work well at and beyond
the DC rating. Assuming you do hit the peak voltage of 21.21KV (may
or may not, depending on gap settings and C size), then it's less
than 20% over spec, and they'll hold up fine. Terry tested those 2KV
caps up to 5700V before it failed :- o