I read in !emc-pstc that Brian O'Connell <[email protected]> wrote (in <[email protected]>) about 'electric strength test' on Thu, 22 Aug 2002: >Also,as some of our output-to-chassis "Y" caps are just 100V decouple caps,
Y-caps are specifically for connection between mains conductors and earth/ground. No others should be called 'Y-caps'. >and because SELV to P.E. spacing and insulation requirements would never >withstand reinforced test levels, That depends on which variety of SELV you mean. True SELV, as opposed to '950 SELV', requires double or reinforced insulation from earth > how does the end-use installation ever get >pri/sec hi-pot to pass without removing the unit from the chassis? Pri to true SELV secondary doesn't pose a problem. The chassis is irrelevant. For '950 SELV', there is no requirement for a pri-sec test at any voltage above that for pri-chassis. -- 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] 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"
