Kris,
In my experience most follow the “+++++ then -----” pattern. We currently do and it is the way that at least 3 different automation software packages setup the test for 61000-4-5 by default. -Doug From: [email protected] [mailto:[email protected]] On Behalf Of Carpentier Kristiaan Sent: Wednesday, September 23, 2009 8:49 AM To: John J Radomski Cc: EMC PSTC Subject: RE: IEC61000-4-5 reversed polarity or not John, Cl 6.1.1 says “positive & negative” but not between consecutive pulses. I ask because some labs do testing +++++ then -----. Kind regards, Kris Carpentier Regulatory & Approvals From: John J Radomski [mailto:[email protected]] Sent: woensdag 23 september 2009 15:42 To: Carpentier Kristiaan Cc: EMC PSTC Subject: Re: IEC61000-4-5 reversed polarity or not Hi Kristiaan, > Is it common practice to reverse polarity in this standard as well? Yes it is. This can be found in Cl. 6.1.1. Regards, John "Carpentier Kristiaan" <[email protected]> Sent by: [email protected] 09/23/2009 09:22 AM To "EMC PSTC" <[email protected]> cc Subject IEC61000-4-5 reversed polarity or not Hi group, The lightning protection standard ITU-T K.44 clearly states that the polarity of the surges shall be reversed between consecutive pulses. IEC61000-4-5 does not state that requirement. Is it common practice to reverse polarity in this standard as well? Vriendelijke groeten, meilleures salutations, mit freundlichen Gruessen, best regards, Kris Carpentier - 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]> - 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]>
