YVF series of VVVF motor is powered by the inverter for variable speed system dedicated to run induction motors, is the exclusive series of unified design new products, and domestic and foreign support a variety of SPWM frequency converter, with independent cooling fan, to ensure the motor at different speeds has a good cooling effect. This series can be widely used in locomotive, metallurgy, textile, printing, transportation, chemical, mining and other industry and fan and pump energy-saving speed control applications. The electrical energy saving, variable speed range, low noise, low vibration, and the advantages of constant torque output, high-speed constant power output of the mechanical properties, dimensions and the series motor is installed in full compliance with IEC standard power levels, general and interchangeability better shell protection grade IP54; cooling method IC416; working system for the S1; ≤ 55kW for the Y connection,> 55kW, △ connection.