In message <[email protected]>, dated Thu, 29 May 2008, Scott Douglas <[email protected]> writes:
>For equipment under EN/UL 60065, when a customer product comes back for >repair and after the repair is complete, is there any requirement that >the unit have hi pot and ground continuity done before returning it to >the customer? These are Class I products requiring a Protective Earth >connection. If there is a requirement, can you point me to the specific >reference? For EN 60065, you do earth continuity and insulation resistance, but you do hi-pot ONLY if you have replaced a major safety-critical component which might fail under hi-pot, such as a Y-cap or mains transformer (remember them?). There is no CENELEC reference, as far as I know. I'm quoting UK national guidelines, but whether they are uniform over Europe, I don't know. They are, however, technically sound. Unnecessary hi-pot testing can degrade insulation, leading to failure after a time. -- 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
