1.high frequency,online double conversion,IGBT 2.N+X redundant,Hot-swap,green UPS 3.high reliablity,availability,efficiency SICON-EMI ... examples. SICON-EMI Modular UPS is the new conception modular UPS, features with high efficiency (≥95%), high stability (N+X redundancy) ... module functions as a unique UPS uniteRedundant updateable system: N+X redundancy, supports on-line upgrade and expansion with the ...