In message <[email protected]>, dated Mon, 14 Jan 2008, Brian O'Connell <[email protected]> writes:
>A question on this std - why do Y1 caps not have to meet the active >flammability test, but Y2-rated caps must ? I don't know. Do we have any IEC TC40 people here? > > >While our design technically conforms to the requirements of 60950-1, I >do not feel 'right' about a single component bridging either >primary/secondary, or primary/floating metal in a Class II unit until I >can learn more about Y1 cap reliability and typical failure modes, so I >have no information for a case-by-case basis. I mean you need to evaluate each new design, with a risk analysis if possible. Meanwhile, people use two Y-caps in series. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk For very important information, please turn over. 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
