Abstract :
Several authors at the INTELEC ´79 meeting reported that Lead-Acid batteries would provide the dominant power reserve for telecommunications in the future. The demands made upon the batteries would be similar to those of today, notably reliability in standby. But some new demands must be met, such as freedom from maintenance, full insulation and ease of installation and commissioning. Beside existing standard types with either tubular or Plant?? plates we describe a new family of cells with capacities ranging from 12,5 Ah to 600 Ah. The main features of these cells, which were introduced into the market some few years ago, are as follows: - 6 V, 4 V, and 2 V modules, 12,5 Ah to 600 Ah. - Capacities above 600 Ah in preparation. - Delivered pre-charged and fully dried in sealed packages. - Fully insulated, flexible inter-cell connectors. - Gas tight pole seals. - Ready for immediate use after filling with electrolyte. - Maintenance intervals of 3 years. - Low voltage drop, optimised inter-cell connectors. - Low self discharge, corrosion resistant Selenium alloy grids. - Suited to both standby and cycling use where erratic power supplies cause these conditions. - Flame retardant plugs. This new battery family is truly designed for general purpose applications.
