Regarding Paschen's Law: http://home.earthlink.net/~jimlux/hv/hvmain.htm http://home.earthlink.net/~jimlux/hv/paschen.htm
Stephen At 12:51 PM 3/15/2002, Doug McKean wrote:
I've done my own testing and researched the thing as well. I think we've had some serious discussions here about this subject in the past. If the archives are available, it would be beneficial to go through them. Also, get a little hipot tester from any of the hipot mfrs for your own bench testing. That's highly educational as well as nipping problems in the bud. You'll first have to jump into Paschen's Law and all that involves with pressure/humidity/geometry of the probe tips used, etc ... Basically, I start with 1Mv/meter STP and work down from there. Therefore, 1mm means 1Kv. Now, throw in a x2 safety factor and you get 2mm spacing. Now increase to 1.5Kv and you end up with 2.5mm? Well, okay. Surface contamination sets in over time? Well, okay again. Obviously, I've been doing some extreme fudging, but it ends up darn close most of the time. Follow the standards when in any doubt. I'm not really sure, but I was told many years ago that wire mfrs use as much as a x7 safety factor for their insulation or used to. - Doug McKean ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
