I read in !emc-pstc that Chris Maxwell <[email protected]> wrote (in <[email protected]>) about 'EN60950 protective conductor test (was Re: Circuit Breaker Tripping Dring Fault Tests)' on Tue, 4 Feb 2003:
>This would make heat dissipation different; and I would assume that it would >make the fusing characteristics (I^2)(t) slightly different as well. Or even a lot different. The reason why I personally would not use a printed board trace as a PEC is that boards can develop cracks and thin copper patches, so I couldn't guarantee that every board would stand the test that the test sample passed. In this case, I don't think potentially destructive sample testing is adequate, either. The PEC needs to be 'four nines' reliable. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
