Joe - I don't have a copy of EN60950-1, however IEC60950-1 includes a note to Subclause 6.1.2.1 that reads, "In Finland, Norway and Sweden, there are additional requirements for the insulation." In the EN version, what is difference from the base standard this note refers to, if the Supplementary insulation requirement no longer exists?
Regards, Peter L. Tarver, PE Product Safety Manager Sanmina-SCI Homologation Services San Jose, CA peter.tar...@sanmina-sci.com -----Original Message----- From: Joe Randolph Sent: Tuesday, July 09, 2002 9:23 AM Hi Alex: 1) In the Third Edition of EN 60950, Annex ZB no longer requires supplementary insulation for Norway and Sweden. Only the 0.4 mm distance through insulation requirement has been retained, along with the stipulation that capacitors bridging the isolation must be Y2 caps. The creepage/clearance requirement now reverts to the requirement called out in the main body of the standard (typically 1.6 mm and 1.0 mm). That being said, I continue to use the supplementary values of 2.5 mm and 2.0 mm in designs where the room is available in the layout. Joe Randolph ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org 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"
