In message <2bb8fffa5caf124e9907b32abdd7f091113...@amermail01.perkinelmer.net>, dated Thu, 15 Jun 2006, "Bouse, John" <[email protected]> writes >Is it acceptable from the viewpoint of EN61010-1 that pop rivets be >used to join > >metal panels that are accessible to the user? In case the metal panel >contacts a hazardous > >voltage in a single fault condition, the metal panel would conduct the >fault current through
I wouldn't use them. It's too difficult to prove that the bonding would always be low-resistance, especially after a year or two near the sea. Instead, I'd put some insulation on the panel so that it couldn't touch the hazardous voltage. This is in accordance with the 'hazard-based' concept, of a 3-block model: Hazard -------------- Safeguard ----------- Person who might be harmed. The hazard is usually hazardous energy, but it might not be - a biological hazard for example. In considering the safeguard, there are three levels of preference: 1. Nullify the hazard - this is often done by insulation, electrical or thermal. For a biohazard it could be a sterile barrier. 2. Dissipate the hazard - this is what earthing/grounding and fusing do. 3. If neither of the above can be done, WARN against the hazard. This is often necessary for things with exposed parts that have to get hot in order to work. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk 2006 is YMMVI- Your mileage may vary immensely. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] 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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
