1.3 phases uninterruptible power systems, 2.120KVA, 3.High frequency, 4.With external ... improve the system efficiency and reliability for kinds of load: transformer, emergency light, electric facility, industry processes, etc.Parallel redundant, ... wave distortion<2%Nonlinear load wave distortion<5%Voltage stability±1%Transient voltage stability±5%(in 10ms)Rated frequencySame as input frequencyOverload ...