... online double conversion,IGBT 2.N+X redundant,Hot-swap,green UPS 3.high reliablity,availability,efficiency SICON-EMI Power ... China. They are widely used in different fields, including electric power, science institute, national defense, telecom, finance, insurance, aviation ... STRUCTUREThe UPS system is real modular structure. Each power module functions as a unique UPS uniteRedundant updateable system ...