YVF2 series motors are suitable for running in frequency change system which the power is supplied by a frequency converter. The speed range is 150-2750rpm (4 poles). YVF2 series motors are widely used in machine tool, metallurgic industry, textile, printing and dyeing, transportation, chemical industry, mine, fans and pumps. The mounting dimensions accord with standard of JB/T7118-2004 and IEC.