Amund and Group:
For reference, the medical device EMC Standard, IEC 60601-1-2:2007 3rd ed. states the following for -4-4 compliance: 6.2.4 Electrical fast transients and bursts ME (Medical Electrical) EQUIPMENT and ME SYSTEMS shall comply with the requirements of 6.2.1.10 at an IMMUNITY TEST LEVEL of * 2 kV for a.c. and d.c. power lines and * 1 kV for signal and interconnecting Cables [over 3 m in length]. Upon further reading of the 60092-504 requirement you provided, I wonder if they are trying to describe two different ways that some people might call out the power entry means. Since -4-4 is a common mode test, with the 33 nF caps directly coupling to each mains conductor and the protective earth conductor in the CDN. I don’t think that -504 is asking you to test line-to-line differentially. I’m not sure how you would even test Burst/surge differentially on a power port. Best, Bryce Stammerjohan OOO – Own opinions only ________________________________ From: Amund Westin [mailto:[email protected]] Sent: Friday, December 18, 2009 1:51 AM To: [email protected] Subject: [PSES] Burst test - line-to-line We are preparing a burst test (fast transient – IEC61000-4-4). The specification (IEC60092-504) states: Amplitude 2kV line / line on power port. Question: Is that a typing error? I have never heard of line-to-line burst testing. Best regards Amund - 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]>
