YVF2 series motor is a three-phase asynchronous motor which can be powered by frequency converter. It is a typical application of motor energy saving. It adopts special insulation system and can be used in inverter power supply system. Generally， the rated voltage is 380V， the frequency is 50 Hz， 5-50 Hz is constant torque， 50-100 Hz is constant power. The voltage and frequency of rated point can also be determined according to the user's needs. The installation method conforms to ie C and DIN standards.