<E15CFB09B1FAD311B74700D0B746BDC12CC814@EMAIL>, John Juhasz <[email protected]> wrote: > I like to give the benefit of the doubt that the standard was created > based > on sound technical evidence.
It was based on INADEQUATE technical evidence, but not on NO technical evidence. Also involved was a prediction of how the demonstrated rise in harmonics over the decade 1978-1988 would continue in the future. That prediction seems to have been pessimistic, not because the harmonics currents of distorting loads are less in proportion to the fundamental, but because the fundamental has decreased due to design improvements and 'green' pressures. I lead an IEC group which is producing an IEC Report on the subject (future IEC61000-1-4). -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from tallyhosis. PLEASE do not mail copies of newsgroup posts to me. ------------------------------------------- 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: Michael Garretson: [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://www.rcic.com/ click on "Virtual Conference Hall,"
