... control technology, which can effectively guarantee the UPS' core system accurate, and fast running. 2)Advanced IGBT inverter ... 9)Humanized panel displayHumanized panel settings, the users can set system parameters, date, output voltage, battery capacity, alarm function, ... 60HZ±0.05%(Battery)Harmonic distortionLinear Load<3%, Non-linear Load<5%Imbalance voltageBalance load≤1%,Imbalance load≤3 ...