The phrase "all lower levels must be satisfied” is what bites you for three-phase. Did this recently, where the only mitigation was to rent a 3-ph master-blaster tester and do a complete pre-comp series, where the data was used to justify the (much reduced) test series done by the lab that wrote the report. Talk to your local EMC lab guys, they probably have developed a rationale for reduced testing.
Brian From: Kunde, Brian [mailto:brian_ku...@lecotc.com] Sent: Tuesday, February 17, 2015 8:20 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Surge Testing 3 phase Equipment We perform Surge Immunity test according to IEC/EN 61000-4-5. Family and Generic standards call out voltage levels for “Line to Line” and “Line to Earth”. So for single phase electrical equipment we perform surge test on the following coupling modes which can take between 1-4 hours to perform depending on the time between pulses, number of phase angles tested, and number of voltage levels tested: L1-N L1-PE N-PE We are looking to perform the Surge test on a 3 phase device (first time for our corporate lab). However, the possible coupling choices appear to be almost endless (18 additional modes). To test all coupling modes available from our test equipment, this test could take an entire week to perform. I’m guessing we can reduce the number of coupling paths. What do most other labs do? What would you do? For instances; Line to Line L1-L2 L1-L3 L2-L3 L1-N L2-N L3-N Line to Earth L1-PE L2-PE L3-PE N-PE Is the above adequate or do I also have to test these Line to Earth combinations, such as: L1+L2-PE L2+L3-PE L1+L3-PE L1+N-PE L2+N-PE L3+N-PE L1+L2+L3-PE L1+L2+N-PE L1+L3+N-PE L2+L3+N-PE L1+L2+L3+N-PE Pros, Cons, Suggestions, opinions, etc.?? Thanks to all. The Other Brian ________________________________________ LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - ---------------------------------------------------------------- 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://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> 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://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
