John,
<When equipment that has a rated current above 16 A draws a reference current that is less than 16 A under the specified test conditions, the manufacturer may proceed in one of the following ways: 1) Comply with the proportional limits as calculated, choosing the required Rsce; 2) Comply with the absolute limits given in IEC 61000-3-2:2011, Table 1, using the measurement procedure defined in 4.2.2 in IEC 61000-3-12:2011; In that case, the manufacturer shall state in the instruction manual "Equipment complying with IEC 61000-3-12", without having to declare a minimum short circuit power Ssc. 3) Change the test conditions to a representative 2,5 min period, as defined in IEC 61000-3- 12:2011, Table 1 for long cyclic equipment, and comply with the proportional limits as calculated, choosing the required Rsce. The manufacturer is strongly advised to state in the test report which of these ways was used, so that subsequent tests are carried out with the same procedure.> Jim __________________________ James L. Knighten, Ph.D. EMC Engineer Teradata Corporation 17095 Via Del Campo San Diego, CA 92127 858-485-2537 - phone 858-485-3788 - fax (unattended) -----Original Message----- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Wednesday, October 10, 2012 11:43 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Question about power line harmonics testing In message <4b64c938bf60be46b83b25988b0a7d7407c65...@sushdc8000.td.teradata.com>, dated Tue, 9 Oct 2012, "Knighten, Jim L" <jim.knigh...@teradata.com> writes: >The latest edition of IEC 61000-3-12:2011 (power line harmonics for >input currents >16A) has an interpretation sheet that references IEC >61000-3-2:2011 (harmonic for input currents <16A). > >I cannot find any evidence that IEC 61000-3-2:2011 exists. The latest >version for sale appears to be IEC 61000-3-2:2009 (Ed. 3.2). > >Does anyone know about IEC 61000-3-2:2011? I cannot see any dated reference to IEC 61000-3-2 in the ISH. If you can, please post a snippet of that text. -- OOO - Own Opinions Only. See www.jmwa.demon.co.uk The longer it takes to make a point, the more obtuse it proves to be. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
