Section 8.2 of 61000-4-5 ed2.0 states the following (underline and bold text is my addition).
The test shall be performed according to a test plan which shall specify the test setup, including: – test level (voltage) (refer to Annex A); – number of surges: number of surge pulses unless otherwise specified by the relevant product standard: - for d.c. power ports and interconnection lines five positive and five negative surge pulses; - for a.c. power ports five positive and five negative pulses each at 0º, 90º, 180º and at 270º; – time between successive pulses: 1 min or less; – representative operating conditions of the EUT; – locations to which the surges are applied. Hope this is helpful. Best Regards, Mike Hopkins EM Test 3 Northern Blvd A-4 Amherst, NH 03031 Tel: +1 603 769 3477 Fax: +1 603 769 3499 [email protected] From: Carpentier Kristiaan [mailto:[email protected]] Sent: Wednesday, September 23, 2009 9:23 AM To: [email protected] Subject: [PSES] 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]>
