There are numerous standards in the market that address surge voltages associated with the environment and associated test documents.
Some standards are: IEEE C62.41 IEEE C62.37 IEEE C62.42 Test Documents are: IEEE C62.45 NEMA LS 1-1992 IEC 61643-1 IEC 61643-12 UL 1449 UL 497 While most of these are related to AC power, the IEEE C62.41 document is the best at characterizing the surge environment. This document also includes a summary of the extensive research that has been compiled on this subject. If there are any questions, please let me know. Thanks, Bryan. From: Anil Allamaneni [mailto:[email protected]] Sent: Tuesday, August 05, 2003 12:37 PM To: [email protected]; [email protected]; [email protected] Cc: [email protected] Subject: Lightning Surge Characterization/Standards Greetings folks, We have products that meet all the Surge requirements of NEBS GR-1089, FCC-68 and EMC 4-5. But, the same products are continuously failing in the field due to real-world lightning strikes. I have spoken to four other manufacturers who make similiar interfaces (DSL) and they all have the same problem : they meet the standards, but fail in the real world. I have two questions for the esteemed people here : 1) Were these standards written based on somebody doing some field evaluations? Has IEEE/Bellcore done any research into what the waveforms really are for actual *real-world* lightning strikes? How do they do that? 2) Is somebody working on re-charaterization of lightning strikes throughout US (eg, the surges seem to be more lethal in TN as opposed to CA)? Would you have the contact details of Working Groups? Thanks [email protected] __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
