Due to the decrease in speed when the motor operates in the low-frequency range, the ventilation system originally designed for the motor reduces the temperature and rises. Therefore, a single-phase 220V or three-phase 380V independent axial flow cooling fan is installed at the rear of the motor to ensure effective heat dissipation at any speed, and to achieve long-term operation of the motor at high or low speeds. The YVF three-phase variable frequency motor produced by our company can be equipped with an actuator or an encoder to achieve low-speed stepless speed control. The YSVF three-phase variable frequency motor is versatile and its installation dimensions comply with IEC standards, making it interchangeable with general standard motors.