All I was sent this communication: Apparently (CIE August 2005, pp26 //http://www.cieonline.co.uk/cie2/articlen.asp?pid=752&id=8700 ) EN61000-3-2 has been modified such that switch-mode power supplies other than those used in PCs, monitors and televisions are now covered under the 'Class A' category rather than 'Class D'; redefined in Amendment 14. The practical implication of this change is that the variable limit on harmonic currents has been replaced by a fixed limit based on the maximum power of Class A, which is 1000W. This essentially relaxes limits on harmonic currents drawn by sub-1kW converters, and may in many cases allow the use of passive (inductor) line current conditioning rather than active power factor correction. It may also cover motor drives (to be confirmed).
Can anyone comment on whether this is this a valid interpretation of Amendment 14 of EN61000-3-2? Thanks Ian Gordon *********************************************************************** The information contained in this email and any attachments may be confidential and is provided solely for the use of the intended recipient(s). If you are not the intended recipient, you are hereby notified that any disclosure, distribution, or use of this e-mail, its attachments or any information contained therein is unauthorised and prohibited. If you have received this in error, please contact the sender immediately and delete this e-mail and any attachments. No responsibility is accepted for any virus or defect that might arise from opening this e-mail or attachments, whether or not it has been checked by anti-virus software. This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org 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.ieeecommunities.org/emc-pstc
