To improve the China National Institute of Standardization data center room power supply system safety, reliability, network equipment room to ensure continuous and stable operation, combined with the central office required UPS capacity requirements, consider load characteristics and principles of safety, energy conservation, environmental protection, easy to manage principle, after the main product features of reliability, availability, advanced, scalability, detailed evaluation, the use of a dual-bus system UPS power supply solutions. Each consists of a Powerstar (Powerstar) EP series of three were three 200KVA tower, auxiliary section 96 12V100AH maintenance free valve regulated lead-acid battery load sharing power. When Dual Bus (modular) UPS systems work by the 2-UPS share the load power supply, respectively. When one of them out of the way UPS fault that UPS through the implementation of "selective tripping" automatic operation off, this time from the rest of the way UPS 1 bear the full load of the original 2-way UPS, continue to provide users with high-quality battery inverter power supply, truly 7 * 24 hours uninterrupted power supply.