The short answer is they are about the same as a coconut and a plum, particularly in regards to telecommunications criteria (Now called ES1, ES2, ES3, ID#'s, and communications circuits, not SELV and TNV anymore), gets worse once 62368-3 is published in a few months.
Jim Wiese Senior Compliance Engineer Office: 256.963.8431 Mobile: 256.714.5882 Email: jim.wi...@adtran.com<mailto:jim.wi...@adtran.com> Web: www.adtran.com<http://s.bl-1.com/h/CoY1mz9?url=http://www.adtran.com> ADTRAN 901 Explorer Boulevard Huntsville, AL 35806 - USA ADTRAN, INC. From: John Woodgate [mailto:j...@woodjohn.uk] Sent: Wednesday, December 06, 2017 2:05 AM To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG> Subject: Re: [PSES] Was there ever a comparison between IEC 60950-1 and IEC 62368-1 (current edition preferable)? And any rationale for any of the changes Re 'rationale', there is some information in Clause 0 of 62368-1 and in IEC 62368-2. But 60950-1 and 62368-1 are fundamentally different, because most of the provisions of 60950-1 were derived from experience and ad-hoc reasoning but those of 62368-1 are derived from structured reasoning ('hazard-based standard'). Of course, experience and reasoning came to the same conclusion in some cases. The 3rd edition of 62368-1 has most of the bugs removed. The 4th edition will, everyone hopes, not be very different from the 3rd. John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk<http://www.woodjohn.uk> Rayleigh, Essex UK On 2017-12-06 00:40, Leo Eisner wrote: I am in IEC SC62A (60601-1 series of standards - Medical electrical equipment & systems) meetings this week and we are trying to id the differences between these 2 standards so we can figure out how to integrate IEC 62368-1 into IEC 60601-1, 3rd ed. + A2, if we have the time and agreement with the National Committees is to be determined. We are working on A2 currently (at CD1 stage) and initially we decided not to include IEC 62368-1 in the A2 but wait for 4th ed. but that likely may be too late for power supplies as 60950 is ending in a couple years for at least EU. Thx all, [photo] Leonard (Leo) Eisner, P.E. 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