IE3 series forced ventilation motor is the motors of cooling in IC416 for low voltage asynchronous motors. YVF2 and YVF3 are the main series with feature of forced ventilation motor. These motors are also we called variable frequency speed motors, which are installed or upgraded VFD optimized motor control systems, equipment energy consumption can be reduced by up to 70%. Therefore, more and more end users in China and abroad consider this series motors first for the long run.