Hi Bob, You wrote ..
>> I have a copy of the Directive 95/54/EEC on order. Unless things have changed from when I last looked, one should be able to download the directive from sources such as http://www.europa.eu.int On naming, unlike the other directives, it ends in EC rather than EEC i.e. 95/54/EC >> The Directive only contains tests for broadband emissions, >> narrowband emissions, and radiated immunity. True. It sets limits for emissions based on ... CISPR 12 I think .. and sets the radiated immunity level at 24V/m, so a general test level of 30V/m is the norm. >> No tests exist for conducted emissions, immunity to transients, >> or ESD. True. >> Do (or can) auto manufacturers require tests outside of >> the Automotive Directive? Yes. And they do. Almost invariably, depending on the product. This is because the directive covers all equipment used in vehicles but makes no distinction between safety critical control-related equipment such as ABS, Steering, Engine management and less critical equipment like car stereos. That it doesn't address the power supply transients has been deemed a shortcoming by some but has been defended by others in some circles where arguments such as "the equipment could be self powered" have been presented. The Agricultural and Forestry vehicle manufacturers will often insist you apply EN ISO 14982, which covers the requirements of the directive but includes the 'missing' tests. Individual manufacturers then begin placing restrictions on how much quiescent current draw your equipment is allowed to draw in 'stand-by'. Often, it is best to think through how, when, where and by whom the equipment will be connected, and then devise a complete approvals strategy based on this info but I am sure you know all this. In addition to including the additional tests, vehicle manufacturers may also require higher stress levels for radiated immunity. 50V/m and 100V/m are common examples, and the conducted immunity spectrum often extends down from 30Mhz to audio frequencies. Best regards - Chris Chileshe - Ultronics Ltd (Own Opinions Only .. etc) From: [email protected] [SMTP:[email protected]] Sent: Friday, May 16, 2003 10:50 AM To: [email protected] Subject: Automotive Directive I have a copy of the Directive 95/54/EEC on order. Can anyone tell me if the following are true: The Directive only contains tests for broadband emissions, narrowband emissions, and radiated immunity. No tests exist for conducted emissions, immunity to transients, or ESD. Do (or can) auto manufacturers require tests outside of the Automotive Directive? Thanks in advance, Bob Heller 3M EMC Laboratory, 76-1-01 St. Paul, MN 55107-1208 Tel: 651- 778-6336 Fax: 651-778-6252 ======================================================= 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 e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________ ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________ 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
