Hi John, I have a copy of IEC 1000-4-1:1992 (French/English version), and it lists clause A.1.1.4b on page 43. It makes reference to Figure A.2, which is on page 47. It's lacking many details, including test levels. However, this standard is titled an 'Overview' - it's not intended to cover details.
Looking through the IEC catalog for immunity to low-frequency harmonics, I see IEC 1000-4-13:2002 "Testing and measurement techniques. Harmonics and interharmonics including mains signalling at a.c. power port, low frequency immunity tests". The first few pages of the standard, including the scope, can be found at: http://domino.iec.ch/preview/info_iec61000-4-13{ed1.0}b.pdf You might look at this standard and see if it helps. Pat <[email protected]> Sent by: [email protected] 10/20/2005 05:48 AM To: <[email protected]> cc: Subject: Looking for IEC 1000-4-1 Hi All The UPS standard EN 50091-2: 1995 has a requirement for low frequency immunity tests per subclause A.1.1.4b of IEC 1000-4-1. I have a copy of EN 61000-4-1 but it has no test methods and no subclause A.1.1.4b. Does anybody know what spec EN 50091-2 is referring to and where to get a copy or just what the test method is for coupling the LF signals onto 3 phase equipment? Thanks John - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/listserv/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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
