John - This proposal is based on a North American D1 Deviation to IEC60950, Subclause 2.6.3.3, and is derived from CSA 22.2 No 0.4. I have a product in my lab that this applies to and two more products coming in to which it will also apply.
Regards, Peter L. Tarver, PE Product Safety Manager Sanmina-SCI Homologation Services San Jose, CA [email protected] > From: John Woodgate > > There is a proposed amendment to IEC/EN 60950-1 > requiring a test of the > protective conductor network at *prospective > short-circuit current* for > the time it takes for the mains circuit > protective device to operate. > The details are controversial at present, because > the test currents > appear not to have taken into account the > differences between > prospective short-circuit currents in different > wiring systems and > supply voltages. Given that reservation, the > lowest test current is 200 > A. > > The amendment is aimed at protective conductors > which are surface or > internal traces of multi-layer printed boards. It > is said that such > traces have failed in the field under > high-current fault conditions. 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
