... IGBT 2.N+X redundant,Hot-swap,green UPS 3.high reliablity,availability,efficiency SICON-EMI Power System CO., Ltd. ... new conception modular UPS, features with high efficiency (≥95%), high stability (N+X redundancy) and extremely high cost-efficiency. POWER RANGESystem capacity: ... N+X redundancy, supports on-line upgrade and expansion with the adding of the load. FLEXIBLE POWER SOLUTION220V,230V,240V ...