Yea, the last I knew the standards do not specify the coupling path(s) to use. Like Bill, we test all combinations. I have heard from some that this is a Common Mode test so you only have to test LNPE-GND but the test doesn't take that long so why not do them all. We have seen products fail in some coupling paths and not others, so this makes a strong case to test all.
The Other Brian From: [email protected] [mailto:[email protected]] On Behalf Of Bill Owsley Sent: Sunday, February 05, 2012 7:31 PM To: Wendy Nya; EMC- PSTC Subject: Re: EFT Power Port Coupling Paths For completeness, test everything. Late Friday I had a fail in this test. EUT and AE are both two wire, no ground brick power supply operated. Investigation begins Monday. It is not a consumer product. ________________________________ From: Wendy Nya <[email protected]> To: EMC- PSTC <[email protected]> Sent: Sunday, February 5, 2012 11:15 AM Subject: EFT Power Port Coupling Paths Dear Experts, I checked several standards but they do not seem to dictate the coupling paths to test. The equipment that we have, has all seven coupling paths for single-phase power port: L-GND, N-GND, PE-GND, LN-GND, LPE-GND, NPE-GND, LNPE-GND. Is it required to test all? Where is it mentioned (standard)? **I used to test all seven paths when testing consumer products. Now I am testing Industrial products and someone indicated to test only L-GND, N-GND, PE-GND. Thanks & Regards, WNya - ---------------------------------------------------------------- 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 <[email protected]<mailto:[email protected]>> 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 <[email protected]<mailto:[email protected]>> Mike Cantwell <[email protected]<mailto:[email protected]>> For policy questions, send mail to: Jim Bacher <[email protected]<mailto:[email protected]>> David Heald <[email protected]<mailto:[email protected]>> - ---------------------------------------------------------------- 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 <[email protected]<mailto:[email protected]>> 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 <[email protected]<mailto:[email protected]>> Mike Cantwell <[email protected]<mailto:[email protected]>> For policy questions, send mail to: Jim Bacher <[email protected]<mailto:[email protected]>> David Heald <[email protected]<mailto:[email protected]>> ________________________________ 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 <[email protected]> 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
