It seems that Brazil operates with a 4kV surge common mode and 2KV differential mode resistibility requirement. Our external AC/DC adapter which is CE marked (2kV) does not pass a 4kV test and we need to search for a new AC/DC adapter for the Brazil marked. Question: Any good recommendations for a 45-75W external AC/DC adapter which survives a 4kV surge test? Thanks. Best regards Amund Westin, Oslo / Norway -----Opprinnelig melding----- Fra: Joe Randolph [mailto:[email protected]] Sendt: 25. januar 2005 22:14 Til: [email protected] Kopi: [email protected] Emne: Re: Surge & Brazil
At 1/25/2005, Amund Westin wrote: I'm searching for the surge requirement in Brazil for ITE / Telecom equipment. Have been told from others that 4kV (IEC61000-4-5) applies on AC lines. It that the fact? Hi Amund: I believe the relevant specification is Resolution 237, dated November 9, 2000. This document specifies the EMC requirements for telecom equipment in Brazil. The standard references and draws upon several IEC, CISPR, and ITU standards, including IEC 61000-4-5 (1995). However, the impairment levels used for some of the tests differ from those used in Europe. It appears that the surge tests for the AC mains port are either 1 KV or 2 KV, depending on where the equipment is used. FYI, the radiated and conducted immunity levels are higher in some cases than those called out in EN 55024. Also, Brazil has a difficult immunity test for 60 Hz power induction. Twisted pair telecom ports must withstand the application of 600 VRMS through 600 ohms for one second. This particular test appears to have been drawn from the 2000 editions of ITU K.20 and K.21. To my knowledge, no other country imposes a requirement like this (aside from Telcordia GR-1089 in the USA, but that is not a regulatory requirement). Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 (USA) [email protected] http://www.randolph-telecom.com <http://www.randolph-telecom.com/> ---------------------------------------------------------------- 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: 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
