Bill, You must have a LISN on all three phases, and neutral if the product has that. All the LISNs not being measured must have the measurement port terminated by a 50 ohm load. You can either use a LISN that has all three phases, or you could use multiple single-conductor LISNs. The measurement method is spelled out in CISPR 22 or 11 or ??, whichever is appropriate for your product. Bob Richards, NCT Square D.
Bill Flanigan <[email protected]> wrote: Esteemed homologists, Is anyone familiar with the requirements for conducted emissions testing on three-phase mains? Can one impoverished tester insert one rented (30A-capable) LISN to each line in turn, or must the LISN involve all three lines simultaneously? CISPR 16-1 is a little vague on this issue. ---------------------------------------------------------------- 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: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
