Dear Treggers, We have a battery back-up unit which will drive our product in the event of power failure. We have been trying to find batteries whose casing has a flammability rating of V-0 (customer requires that all materials shall be V-0). EN60950 (IEC950) calls for V-2 or better.
Our attention has been drawn to EN50091-1 :1993 a standard for Uninterruptable Power Systems. Section 4.4 states that The provisions of 4.4.1 to 4.4.8 of the referred document (EN60950) apply and in addition the following note to 4.4.3.2/RD applies: 'Batteries shall have a flammability class HB or better'. Does anyone know the reason for the relaxation on flammability requirements for batteries used in UPS? Best regards, Alan Booth. Equipment Engineering Group Fujitsu Telecommunications Europe Limited Solihull Parkway Birmingham Business Park Birmingham B37 7YU Telephone +44 121 717 6492 FAX +44 121 717 6014/6018
