Correct. I forgot that the class D limits capped out at class A and 600W. My immediate thought was to point out that class D limits where not as tight as one might think as the input current increases.
Regards, Glenn Lesmeister Product Regulatory Compliance The New HP Tel: 281-514-5163 20555 SH 249, MS60607 Fax: 281-514-8029 Houston, TX 77070-2698 Pgr: 713-786-4930 glenn.lesmeis...@hp.com -----Original Message----- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Friday, February 21, 2003 1:58 AM To: emc-p...@majordomo.ieee.org Subject: Re: Harmonics Testing for PCs I read in !emc-pstc that Lesmeister, Glenn <glenn.lesmeis...@hp.com> wrote (in <31891b757c09184bbfec5275f85d559502d1d...@cceexc18.americas.cp qcorp.net>) about 'Harmonics Testing for PCs' on Thu, 20 Feb 2003: >The problem with class A limits is that the higher your power draw, the lower >your relative limits are. As you get between 600 and 1000W, class D limits can >be higher than class A limits in which you might pass (depending on how bad you >were failing). Class D limits include maximum currents equal to the Class A limits, but Clause 5 of the standard limits Class D to products with active input power not exceeding 600 W. So you can't apply Class D limits above 600 W. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk 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: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org 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 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: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org 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
