I read in !emc-pstc that rehel...@mmm.com wrote (in <of5a242f14.94f805e8-on86256b4c.00414...@mmm.com>) about 'EN 61000-3-2 applicability and let-outs', on Fri, 25 Jan 2002: > > > >>I realise that none of the above give much comfort to manufacturers of >>domestic or consumer products, but maybe a computer manufacturer could >offer >>a version without PFC only for use in installations that have a dedicated >LV >>supply. > >No, the big problem is for manufacturers who make commercial and light >industrial equipment
The Millennium Amendment re-classifies most of that equipment as Class A. >that are under >16A and are connected to the public power mains. This is the majority of >commercial equipment. > >As was mentioned previously, the harmonic and flicker standards are >considered by many to be "skewed" >standards because they were heavily influenced by the power industry >virtually to the exclusion of all other >data and input. No, that's not entirely fair. AFAIK, nothing (credible) that was *submitted* was ignored, but very little was submitted. Equipment manufacturers either did not see a need to participate in the work or (in the case of SMEs) did not know about it. > >The issue is not whether harmonics and line votage variations are a >problem. The issue is to what extent they >are a problem. Correct, and this is different in different countries, even within Europe. >And until these standards become "unskewed" and all data is >weighed, these two "tainted" >standards will not be believeable. > The large 'Millennium' amendment to IEC/EN61000-3-3 removes virtually all the 'skewing' from that standard, and the MA to IEC/EN61000-3-2 goes a long way to removing it from that standard, *for most products*. If you don't agree, please tell us what 'skewing' you still detect. With specific information, we can take action in the IEC WG. Without it, we can't. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk After swimming across the Hellespont, I felt like a Hero. 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net 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: No longer online until our new server is brought online and the old messages are imported into the new server.
