The YBBP series explosion-proof variable frequency variable speed three-phase asynchronous motor (frame numbers 80-355) is made into an explosion-proof type according to the requirements of GB/T 3836.1-2021 "Explosive Atmospheres - Part 1: General Requirements for Equipment" and GB/T 3836.2-2021 "Explosive Atmospheres - Part 2: Equipment Protected by Explosion proof Enclosures" d ". The explosion-proof mark is Ex db IIB T4 Gb, and it forms an electromechanical integrated system with the frequency converter device. This system can operate in a wide range of constant torque and constant power, and has the characteristics of wide speed regulation range, fast dynamic response, and high speed regulation accuracy. It is suitable for industries such as petroleum, chemical, mining, metallurgy, and power.