On Sun, 5 Feb 2012 08:15:54 -0800 (PST), Wendy Nya <[email protected]> wrote:
> 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)? >From the viewpoint of the standards, it can depends to the exact standard you need to apply. It seems IEC 61000-4-4:2004 (ed.2) clause 7.3.1.1 is clear on this: "The test voltage shall be applied simultaneously between a ground reference plane and all of the power supply terminals, a.c. or d.c., and the protective or functional earth port on the EUT cabinet." The clause 7.3.1.2 of the standard is slightly confusion, but the corresponding figure says the essentially same thing. Regards, Tom -- Tomonori Sato <[email protected]> URL: http://homepage3.nifty.com/tsato/ - ---------------------------------------------------------------- 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]>
