There is a revision to IEC 61000-4-11 that is about to be issued as and FDIS and will become IEC 61000-4-11 Ed. 2 when approved.
This is from the CDV ( no guarentee it's exactly the same in the FDIS, but I believe it is...) Abrupt changes in supply voltage shall occur at zero crossings of the voltage, and at additional angles considered critical by product committees or individual product specifications preferably selected from 45°, 90°, 135°, 180°, 225°, 270° and 315° on each phase. For short interruption test of three-phase systems, all the three phases must be simultaneously tested as per 5.1. For voltage dips test of single phase systems, the voltage must be tested as per 5.1. This implies one series of tests. For voltage dips test of three-phase systems with neutral, each individual voltage (phase-to-neutral and phase-to-phase) must be tested, one at a time, as per 5.1. This implies six different series of tests. For voltage dips test of three-phase systems without neutral, each phase-to-phase voltage must be tested, one at a time, as per 5.1. This implies three different series of tests. If there is no Neutral and/or ground, dips are done phase to phase. Best Regards, Michael Hopkins Manager, EMC Technologies Thermo Electron Corporation Control Technology Division EMC & ESD Simulation Solutions One Lowell Research Center Lowell, MA 01852 Tel: +1 978 275 0800 ext. 334 Mobile: +1 603 765 3736 [email protected] www.thermo.com/esd One Thermo, committed to integrity, intensity, innovation & involvement From: Gordon,Ian [mailto:[email protected]] Sent: Wednesday, January 28, 2004 11:05 AM To: 'IEEE EMC-PSTC GROUP' Subject: EN61000-4-11 All I have heard that there is a proposed amendment to EN61000-4-11 relating to testing of three phase equipment. Does anyone have details of this proposed change? I would also welcome any opinions as to how to apply this test to a three phase product not fitted with a neutral and wired in delta configuration. Ian Gordon *********************************************************************** This email is confidential and intended solely for the use of the individual to whom it is addressed. Any views or opinions presented are solely those of the author and do not necessarily represent those of the BOC Group plc or any of its affiliates. If you are not the intended recipient, be advised that you have received this email in error and that any use, dissemination, forwarding, printing, or copying of this email is strictly prohibited. If you have received this email in error please return the message to the sender by replying to it and then delete the message from your computer. This footnote also confirms that this email message has been checked by anti-virus software for the presence of computer viruses. However, the BOC Group plc or any of its affiliates accepts no responsibility for any virus or defect that might arise from opening this e-mail or attachments. This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [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.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.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [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.ieeecommunities.org/emc-pstc
