> -----Original Message----- > From: [email protected] [mailto:[email protected]] On Behalf Of John > Woodgate > Sent: Friday, November 06, 2009 10:59 AM > To: [email protected] > Subject: Re: [PSES] Mains harmonics & flicker test equipment > > In message > The change from the 1991 to 2002 editions was to widen the measurement > bandwidth by a factor of TEN times. No equipment manufacturer realised > the implications; millions of products that operate without any problem > on the network fail the '2002' interharmonic grouping test. > > All the electricity suppliers represented on the IEC committee are > content for the 'grandfather' clause to remain until a satisfactory > solution is found. Intensive work is being carried out continuously to > find that solution. > -- > OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk > John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK > Help stamp out intolerance!
When "millions of products that operate without any problem" suddenly become non-compliant with a standard, doesn't that mean that the adjustment should be made to the standard and not the products? Ed Price [email protected] WB6WSN NARTE Certified EMC Engineer Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 Military & Avionics EMC Is Our Specialty - 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]>
