On Tue, 7 Feb 2012 08:34:47 +0000, John Woodgate <j...@jmwa.demon.co.uk> wrote:
> >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." > > That's not clear at all. Does 'all of' mean 'all .... connected > together' or 'every... individually'? I did't feel the sentense is very good, but I thought the word "simultaneously" made it clearer on this point. And figure 4, 9 and 12 in the standard no longer have switches to select the coupling path. However, I think that to test all combinations can be a good practice. Regards, Tom -- Tomonori Sato <vef00...@nifty.ne.jp> 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 <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>
