I read in !emc-pstc that Rich Nute <ri...@sdd.hp.com> wrote (in <200108182110.oaa02...@epgc196.sdd.hp.com>) about 'CE test suite for computers', on Sat, 18 Aug 2001:
>The basic problem is that the harmonic currents >generated in the load equipment are dissipated >in the delta primary of a delta-wye distribution >transformer. If the harmonic content is large, >then the primary winding can overheat, resulting >in transformer failure. In Europe, that isn't usually the major problem. System capacitor overheating due to harmonic currents is more significant. In some cases, system inductors have failed due to over-voltage. Unfortunately, the European supply industry only cites extreme cases (like a 1MW motor!), and then only grudgingly. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! ------------------------------------------- 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: http://www.rcic.com/ click on "Virtual Conference Hall,"
