YBBP series flameproof variable-frequency adjustable speed three-phase induction motors, frame number: H80~500, capacity: 0.75~1120KW, pole number: 2~10P, voltage: 1140V and below, frequency modulation range: 5~100HZ, with advantages such as smooth torque at low speeds, no creep, smooth operation during speed regulation, insulation protection for reduced shaft current, especially for metallurgy projects with special operating frequency and special working system requirements. It is suitable for equipment used in explosive gas environment other than coal mines, and is used in petroleum, chemical, natural gas, biopharmaceuticals and other mechanical devices with high safety requirements; Ex markings: Exd lIA T4 Gb, Exd lIB T4 Gb. Of which, the seat number: H80-355 has obtained the Exd lIC T4 Gb explosion proof certificate, with qualifications such as explosion proof certificate, production license, etc.