In message <000d01c8c223$6d181d80$357f6a0a@PC323541548743>, dated Fri, 30 May 2008, [email protected] writes:
>Note that some businesses require periodic >safety tests on their equipment, including >hi-pot. I'm not aware of any early hi-pot >failures in such situations. This (repeated hi-pot) is specifically not allowed in UK and many other European countries. I don't know of any failures definitely due to insulation degradation, but when periodic field testing for electrical safety (Portable Appliance Testing, which is a legal requirement) was first introduced, incompetent operators wrecked a very large amount of equipment by wrongly applying hi-pot. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Either we are causing global warming, in which case we may be able to stop it, or natural variation is causing it, and we probably can't stop it. You choose! John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
