... wave, applying to capacitive, inductive and nonlinear mixed-load,with superior load capacity;Perfect protection fuction:overload, short circuit, ... and PC is connected through the RS232 communication interface, to understand the inverter work history, Automatic Turning, parameter ... 50HZ±1%wave formPure Sine waveTHD≤3%Protection functionoverload,short circuit,low battery voltage,high/low AC mains ...