Explosion Proof Induction Electric Motor

Explosion-proof induction electric motor is a special motor designed for use in flammable and explosive environments. It uses a sealed housing and a special structural design to effectively prevent internal electrical sparks or high-temperature components from causing explosions of surrounding flammable gases, dust or steam. This type of motor is usually used in high-risk places such as petroleum, chemical, and coal mines to ensure safe and reliable operation in potentially explosive environments.

Safety
The housing of the explosion-proof induction electric motor is made of high-strength alloy material, which can withstand internal explosion pressures of up to 1.5MPa, which is much higher than that of ordinary motors. The special labyrinth joint surface design effectively prevents flame propagation, and the flame path length exceeds 25mm. In addition, the surface temperature of the motor is strictly controlled below T4 level (135℃), which can avoid igniting surrounding flammable materials.

Heat Dissipation
The housing fin height of the explosion-proof induction electric motor is increased to 25mm, the spacing is optimized to 10mm, and the heat dissipation area is increased by 43%. The internal fan diameter is increased by 15%, the blades are aerodynamically designed, and the airflow speed is increased by 20%. These designs make the temperature rise of the motor 18℃ lower than that of ordinary explosion-proof motors when running at full load.

Anti-vibration
The dynamic balance accuracy of our explosion-proof induction electric motor rotors reaches G1.0 (0.4g·mm/kg), which is better than the industry standard G2.5. The bearing seat is made of ductile iron, and the damping ratio is increased by 40%. The vibration damping pad uses a special composite material with a natural frequency below 10Hz and a vibration isolation efficiency of 95%. These measures keep the vibration value of the motor below 0.7mm/s during operation, which is 35% lower than that of ordinary explosion-proof motors.

Low Noise
The electromagnetic noise and wind noise of the explosion-proof induction electric motor are greatly reduced by optimizing the stator and rotor slot matching (slot ratio of 36:28) and improving the fan design (the number of blades is increased to 9). Under rated conditions, the noise level is controlled at 68dB(A), which is 7dB(A) lower than similar products, equivalent to a 50% reduction in perceived noise.

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