Represented by the rapid development of urban rail transit, is expected to be operational in 2020 mileage of 6618 kilometers, the urban rail transit to built during "much starker choices-and graver consequences-in" mileage total 3000 km to 4000 km, annual average 600 to 800 kilometers per year. Centralized power supply mode is the trend of the metro power in our country, at the station in an integrated power supply scheme, which set the high-power UPS equipment for communication system, comprehensive monitoring system, AFC system, office automation system of power supply, etc.

   Subway operation safety and reliability as a focal point of its business and the public, to various power supply system for rail transit station, car depot and the parking lot, provide high quality, high reliable power supply, and UPS running environment is faced with harsh, difficult maintenance, equipment and the difficulty of management, outstanding problems. Challenges for safe operation and low cost, rail transit in urgent need of high reliability, less affected by the outside factors, at the same time power supply for scheduling and operation management, maintenance maintenance is relatively convenient, flexible power supply UPS power supply solution.