1. Classified by motor principle

It can be divided into explosion-proof asynchronous motors, explosion-proof synchronous motors, and explosion-proof DC motors, etc.

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 flameproof motors, increased safety motors, pressurized motors, spark-free motors, and dust explosion-proof motors, etc.

4. Classified by matching main engine

It can be divided into explosion-proof motors for coal mine transporters, explosion-proof motors for coal mine winches, explosion-proof motors for rock loading machines, explosion-proof motors for local fans in coal mines, explosion-proof motors for valves, large explosion-proof motors for fans, explosion-proof motors for ships, explosion-proof motors for lifting metallurgy, and increased safety brushless excitation synchronous motors for hydrogenation devices, etc. In addition, it can also be classified according to rated voltage, efficiency, and other technical indicators, such as high-voltage explosion-proof motors, high-efficiency explosion-proof motors, high slip rate explosion-proof motors, and high starting torque explosion-proof motors, etc.

The basic series of low-voltage flameproof motor products widely used in our country is the YB series flameproof three-phase asynchronous motor, which is a derivative product of the 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 - Flameproof Electrical Equipment"; the motor power range is 0.55-200kW, and the corresponding frame number range is for frame center heights of 80-315mm; the explosion-proof marks are dI, dIIAT4, dIIBT4, which are suitable for fixed equipment in underground coal mines or factories of IIA and IIB levels, with temperature groups T1-T4 for explosive mixtures formed by flammable gases or vapors and air; the main shell protection level is IP44, and it can also be made to IP54, with the junction box protection level being IP54; the rated frequency is 50Hz, and the rated voltage is 380, 1660, 1140, 380/660, 660/140V; the motor insulation grade is F, but the stator winding temperature rise is assessed according to grade B, which has a large temperature rise margin. The main models of the derived series of low-voltage flameproof three-phase asynchronous motors include: YB series (dIIcT4) (frame center height of 80-315mm), YBSO series (small power, frame center height of 63-90mm), YBF series (for fans, frame center height of 63-160mm), YB-H series (for ships, frame center height of 80-280mm), YB series (medium size, frame center height of 355-450mm), YBK series (for coal mines, frame center height of 100-315mm), YB-W, B-TH, YB-WTH series (frame center height of 80-315mm), YBDF-WF series (for outdoor corrosion-resistant flameproof electric valves, frame center height of 80-315mm), and YBDC series (flameproof capacitor-start single-phase asynchronous motors, frame center height of 71-100mm) and YBZS series explosion-proof dual-speed three-phase asynchronous motors for lifting. In addition, there are YB series high-voltage flameproof three-phase asynchronous motors (frame center height of 355-450mm, 560-710mm). The YB2 series jointly designed by the industry has passed national certification at the end of 2014 and will gradually replace the YB series, becoming the basic series of flameproof three-phase asynchronous motors in our country. The YB2 series has a total of 15 frame numbers (frame center heights of 63, 355mm), with a power range of 0.12-315kW.