Hi Sérgio, You might consider including warnings in the installation and service guides as well as labels indicating an energy hazard presence with instructions to refer to the proper manuals at least (to better define the hazard). Caution statements regarding removal of jewelry (i.e. bracelets, necklaces, etc.) and also on the use of protective eye-wear, insulated gloves and insulated tools might be a further consideration. If your equipment is intended for service personnel only, the assumption might still be made that they will be properly trained in the inherent hazards of dealing with lead-acid batteries and but much of that message must come from your end as the manufacturer.
For design based safety requirements, check 60950 third ed. cl. 2.1.2 and 2.1.3. Both indicate the requirement to protect against unintentional bridging by conductive materials via the use of location or guarding. Compliance is checked by measurement and inspection while considering whether or not unintentional contact is likely if there's a need to get near or past the energized parts (would seem to apply ). The standard also includes labeling requirements in dealing with energy hazards. My opinion only and not that of my employer. Cheers, Kaz Gawrzyjal [email protected] -----Original Message----- From: SERGIO LUIZ DA ROCHA LOURES SERGIO [mailto:[email protected]] Sent: Wednesday, February 28, 2001 12:04 PM To: [email protected] Subject: Battery terminals isolation Can the group tell me if there is any requirement about isolations of lead acid battery terminals? We have a 48V equipment powered by lead acid batteries. The negative of the batteries set is connected to the enclosure. When the batteries need to be replaced, short circuit happens if the tool used to detach the connectors touch the enclosure and the positive of the batteries. Information to disconnect the negative terminal first before replace the batteries is clear in the service manual, but I don't know if only this is sufficient. Regards Sérgio Rocha Loures Siemens Ltda. - Brazil ICN FL QEL Tel: +55 41 341-5755 Fax: +55 41 341-5058 E-mail: [email protected] ------------------------------------------- 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: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall," ------------------------------------------- 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: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
