This series of motors is a new generation of ultra-high efficiency motors developed independently, based on the YBX4 series ultra-high efficiency motors and utilizing various new technologies and materials. It has the advantages of high efficiency and energy saving, large temperature rise margin, long service life, good performance, low noise, advanced explosion-proof structure, high reliability, and easy use and maintenance. The efficiency index of this series of motors is the first level of motor energy efficiency index, which is currently the most efficient motor among the prescribed energy efficiency grades.