John, Thank you very much for the quick comment. The EUT are relay switches and dimmers. Section 7.3 is for Luninaire. Section 8.2 is for Indoor and Outdoor Luminaires. Section 8.9 is for lamps. I cannot locate B.2. from my copy (CISPR 15 @ IEC:2005). Based on these, my colleague insists groundplanes are not required when perform measurement on relay switches and dimmers. Do you agree with the argument? Respectfully, Grace
On 1/23/09, John Woodgate <[email protected]> wrote: In message <[email protected]>, dated Fri, 23 Jan 2009, Grace Lin <[email protected]> writes: Are vertical and horizontal groundplanes required for measuring disturbance voltages per Section 4.3 of CISPR 15? CISPR 15 doesn't mention any groundplane while CISPR 22 does. My colleague concludes that groundplanes are not required. Do you agree with the conclusion? There is a requirement in the last paragraph of 7.3, which is, in effect, a ground plane, and there is another in 8.2, and another in 8.9, and another in B.2. I think you have to look very carefully through the standard (and do a word-search if you have an electronic copy). -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk <http://www.jmwa.demon.co.uk/> and www.isce.org.uk <http://www.isce.org.uk/> Things can always get better. But that's not the only option. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. 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]> - 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. 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]>
