Hi Jim, This question was posted on Interference Technology’s Testing Forum, and received a reply. To view the reply, please visit the link below.
http://www.interferencetechnology.com/i terference-technology-forum.html?tx_mmf rum_pi1%5Baction%5D=list_post&tx_mmforum_pi1%5Btid%5D=165 Thanks, Kate Savo Interference Technology Forums Editor www.interferencetechnology.com 484-688-0300 ext 26 ks...@interferencetechnology.com From: Knighten, Jim L [mailto:jim.knigh...@teradata.com] Sent: Tuesday, October 27, 2009 5:19 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] certifying overall products vs. certifying individual constituant chassis I am wondering what the industry experience is regarding basing EMC or Safety product certification on individual chassis (or subsystems/components) that may comprise the product, vs. certification at the product level? In particular, I have some products that are 40U racks containing multiple chassis, each of which is compliant and has its own certification. Currently, product certification is done at the entire product level (i.e., rack) and there is a product regulatory label on the overall product. I know that some companies (names withheld) that appear to be certifying only at the chassis level, rather at the ensemble product level. For EMI, I know the physics teaches us that CE + CE does NOT equal CE (i.e. one compliant chassis combined with another compliant chassis does not assure a compliant combination of the two chassis). I have war stories to corroborate this. For Safety, there are some tests (heating test is an example) that can be are run at the product level. Country approval documentation requirements vary by country, but usually there is requirement for a DoC, CB report, etc. I get increasing pressure internally (economically driven) to declare product certification done if all the constituent chassis are compliant and certified. What is the experience you guys have? Thanks in advance, Jim __________________________ James L. Knighten, Ph.D. EMC Engineer Teradata Corporation 17095 Via Del Campo San Diego, CA 92127 858-485-2537 – phone 858-485-3788 – fax (unattended) - 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 <emc-p...@ieee.org> 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 <emcp...@socal.rr.com> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com> - 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 <emc-p...@ieee.org> 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 <emcp...@socal.rr.com> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com>
