The main types of explosion-proof motors

1. Classified by motor principle
It can be divided into explosion-proof asynchronous motors, explosion-proof synchronous motors, and explosion-proof DC motors.
2. Classified by usage location
It can be divided into explosion-proof motors for underground coal mines and explosion-proof motors for factories.
3. Classified by explosion-proof principle
It can be divided into explosion-proof motors, increased safety motors, positive pressure motors, non sparking motors, and dust explosion-proof motors.
4. Divided by matching hosts
It can be divided into explosion-proof motors for coal mine transport aircraft, explosion-proof motors for coal mine winches, explosion-proof motors for rock loaders, explosion-proof motors for local fans in coal mines, explosion-proof motors for valves, explosion-proof motors for fans, explosion-proof motors for ships, explosion-proof motors for lifting and metallurgy, and increased safety brushless excitation synchronous motors for hydrogen refueling equipment. In addition, it can also be classified according to technical indicators such as rated voltage and efficiency, such as high-voltage explosion-proof motors, high-efficiency explosion-proof motors, high slip explosion-proof motors, and high starting torque explosion-proof motors.
The basic series of low-voltage explosion-proof motor products widely used in China is YB series explosion-proof three-phase asynchronous motor, which is a derivative product of Y series (IP44) three-phase asynchronous motor. The explosion-proof performance meets the requirements of GB3836.1-83 "General Requirements for Explosion proof Electrical Equipment for Explosive Environments" and GB3836.2-83 "Explosion proof Electrical Equipment for Explosive Environments - Explosion proof Electrical Equipment"; The motor power range is 0.55-200kW, corresponding to a machine base size range of 80-315nu at the center height of the machine base; The explosion-proof signs are dI, dIIAT4, and dIIBT4, which are respectively applicable to fixed equipment or factory IIA and IIB levels underground in coal mines, and places where combustible gases or vapors form explosive mixtures with air in temperature groups T1-T4; The protection level of the main body shell is IP44, which can also be made into IP% 4, and the protection level of the junction box is IP54; The rated frequency is 50Hz, and the rated voltage is 380, 1660, 1140, 380/660, 660/140V; The insulation level of the motor is F level, but the temperature rise of the stator winding is assessed according to B level, which has a large temperature rise margin. The main models of the derived series of low-voltage explosion-proof three-phase asynchronous motors include: YB series (dIICT4) (with a center height of 80-315mm), YBSO series (low power, with a center height of 63-90mm), YBF series (for fans, with a center height of 63-160mm), YB-H series (for ships, with a center height of 80-280mm), YB series (medium, with a center height of 355-450mm), YBK series (for coal mines, with a center height of 100-315mm), YB-W, B-TH, YB-WTH series (with a center height of 80-315mm), YBDF WF series (for outdoor anti-corrosion and explosion-proof electric valves, with a center height of 80-315mm), YBDC series (explosion-proof capacitor starting single-phase asynchronous motor, with a center height of 71-100mm), and YBZS series lifting explosion-proof dual speed three-phase asynchronous motor. In addition, there are YB series high-voltage explosion-proof three-phase asynchronous motors (with a center height of 355-450mm and 560-710mm). The YB2 series, jointly designed by the industry, has passed the national appraisal at the end of 2014 and will gradually replace the YB series as the basic series of explosion-proof three-phase asynchronous motors in China. The YB2 series has a total of 15 machine base sizes (with a center height of 63 and 355mm), with a power range of 0.12-315kW.