280kW Explosion proof Motors are a special type of motor specifically designed for flammable and explosive environments. Through unique structural and process designs, they prevent sparks and high temperatures generated during operation from igniting the surrounding flammable and explosive media. The core of explosion-proof motors is to control explosion risks rather than prevent explosions. The 280kW explosion-proof motor is a medium to high-power explosion-proof motor, suitable for flammable and explosive environments, and is often used in industrial scenarios with explosion risks.
Our client from Ghana purchased a 280kW Explosion proof Motors to drive a cantilever road header in underground coal mines. This equipment is a core mechanical device for excavating mine roadways. The explosion-proof motor is dual-speed. This design can meet the different operation requirements of the tunnel boring machine. The low-speed gear can handle heavy-load cutting in hard rock or complex geological conditions, while the high-speed gear is suitable for rapid tunneling in conventional coal seams. Moreover, this motor can operate stably on the coal seam working face with an upward inclination of no more than 74° and a downward inclination of no more than 32°. It can withstand the severe vibration during tunneling. Its flameproof structure can prevent the sparks from motor operation from igniting the methane gas underground, ensuring the safe advancement of the tunnel development operation.
Technical Data Sheet：
|
Name |
280kW Explosion proof Motor |
|
Voltage |
380V |
|
Power |
280kW |
|
Horsepower |
380HP |
|
Frequency |
50Hz |
|
Speed |
1490r/min, 1000r/min |
|
Poles |
4/6 pole |
|
Efficiency(%) |
High efficiency |
|
Power Factor(cosΦ) |
0.86 |
|
Max Torque/Rated Torque |
2.2 |
|
Locked Torque/Rated Torque |
1.8 |
|
Locked Current/Rated Current |
7.1 |
|
Noise Limit dB(A) |
100 |
The characteristics of explosion proof motor
The mainstream adopts the flameproof type (Ex d) structure. The shell can withstand the internal explosion pressure, and the gap at the joint surface cools the flame to prevent the ignition of external flammable and explosive media
The insulation class is F grade, with enhanced electrical clearance and creepage distance design to prevent ignition sources in case of overload or voltage fluctuations.
With a rated power of 280kW and a strong torque output, it can meet the continuous heavy-load operation requirements of cantilever road headers.
Supports constant speed or variable frequency operation, with optimized starting performance. It can start smoothly at low speed to avoid grid impact, and ensure efficient operation at high speed.
280kW Explosion proof Motors has a strong overload capacity, can cope with instantaneous load fluctuations in scenarios such as mines and chemical plants, has high reliability in continuous operation, and reduces the risk of downtime.
With a protection grade of IP55, it is dust-proof, water-proof and corrosion-resistant, capable of withstanding underground dampness, coal dust accumulation or corrosive gases in the chemical industry.
It has a wide operating temperature range and can adapt to underground and outdoor environments from -15 ℃ to 40℃. Some models for extreme scenarios can even withstand higher or lower temperatures.
The machine bases are mostly made of cast iron, with a solid structure and shock resistance, capable of withstanding severe vibrations during operations such as tunneling and transportation.
Contact Information
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