... .2KW inverter VVVF control, constant,vairable torque mode VD4 series single phase, 220V AC 1.5~2.2KW inverterVD4 ... , output current ,output voltage and so onkey LockLock all the keysParameter CopyCopy function parameters between two inverters by ... over voltage protection;under voltage protection;over heat protection;over load protectionOption partsextension cable of digital panel; brake resistor. ...