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Pinxing tells you some knowledge about the explosion-proof motor industry

Explosion-proof motors are mainly used in coal mines, oil and gas, petrochemical, and chemical industries. In addition, it is also widely used in textile, metallurgy, city gas, transportation, grain and oil processing, papermaking, medicine, and other sectors.

The rated voltage, rated current, power, and speed of explosion-proof motors are the same as those marked on ordinary motors. The difference is that the explosion-proof motor has an explosion-proof mark: Ex.
1. Explosion-proof type + equipment category + (gas group) + temperature group explosion-proof type:
1. Flameproof type Ex d2. Sand-filled type Ex q3. Increased safety type Ex e4. Pouring type Ex m5. Positive pressure type Ex p
6. n type Ex n7. Intrinsic safety type E x ia Ex ib8. Special type Ex s9. Oil immersed type Ex o10. Dust explosion-proof type DIP A DIP B2
2. Equipment Category
Electrical equipment for explosive gas environments is divided into:
Category I: electrical equipment for underground coal mines;
Category II: electrical equipment for use in non-toxic gas environments except coal mines.
Class II explosion-proof "d" and intrinsically safe "i" electrical equipment are further divided into classes IIA, IIB, and IIC.
Electrical equipment for combustible dust environments is divided into: Type A dust-tight equipment; and Type B dust-tight equipment.
3. Temperature group: T1~T6 Ignition temperature of combustible gas Maximum temperature of electrical equipment T1 T>450 ℃ T2 450℃>T>300℃ T3 300℃>T>200℃ T4 200℃>T>135℃ T5 135℃>T>100℃ T6 100℃>T>85℃ Development With the development of science and technology and production, the number of dangerous places is also increasing. For example, edible oil production used to use the traditional pressing process. After the 1970s, my country began to introduce advanced foreign oil leaching processes, but this process required the use of chemical solvents containing hexane, which is flammable and explosive. substances; therefore, the leach oil workshop becomes a dangerous place and requires the use of explosion-proof motors and other explosion-proof electrical products. Another example is the rapid development of highways in our country, and the emergence of a large number of fuel gas stations, which also provide new markets for explosion-proof motors.