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90ST-□00630XX-EX-XXV-MA
wheatstone
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Product Description
Explosion-proof motors for Underground Coal Mines,Safe and reliable electrical motors designed to prevent ignition of flammable gases, ensuring worker safety.
These specially designed motors are constructed with robust enclosures and sealed components, capable of withstanding hazardous coal mine environments. They feature advanced insulation and cooling systems, minimizing the risk of sparking or overheating. With their explosion-proof certification, these motors offer peace of mind and compliance with stringent safety regulations. Their reliable performance and durability make them indispensable for powering critical equipment in underground coal mining operations.
| Model No. | L (mm) | Power rating (kw) | Rated speed（rpm) | Max. speed （rpm) | Torque Rating (N.m) | Max torque (N.m) | Rotor inertia （Kg.cm²） |
| 90ST-□00630XX-EX-XXV-MA | 243.5 | 0.2 | 3000 | 3600 | 0.6 | 1.8 | 0.3 |
| 90ST-□01330XX-EX-XXV-MA | 243.5 | 0.4 | 3000 | 3600 | 1.3 | 3.9 | 0.6 |
| 90ST-□02430XX-EX-XXV-MA | 243.5 | 0.75 | 3000 | 3600 | 2.4 | 7.2 | 0.9 |
Explosion Proof Grade :EX db IIB T4/EX db IIC T5 Selectable Voltage：24V、48V、72V、220V、380V
Characteristics OF 90 explosion proof motors for Underground Coal Mines
Application Industry
Ventilation systems and fans
Conveyor belt systems
Pumping systems
Crushers and grinding mills
Underground transportation systems
FAQ
Q1: What is an explosion-proof motor?
A1: An explosion-proof motor is designed to operate safely in potentially hazardous environments where flammable gases, vapors, or dust are present. These motors are constructed to prevent the ignition of the surrounding explosive atmosphere.
Q2: Why are explosion-proof motors necessary in underground coal mines?
A2: Underground coal mines contain potentially explosive atmospheres due to the presence of coal dust and methane gas. Explosion-proof motors are essential to ensure safe and reliable operation of machinery and equipment in such hazardous environments.
Q3: How do explosion-proof motors prevent explosions?
A3: Explosion-proof motors are built with robust construction features to contain any potential explosion within the motor housing. These motors have enhanced sealing and are designed to prevent sparks or hot surfaces from igniting the surrounding explosive atmosphere.
Q4: What certifications should explosion-proof motors have for underground coal mines?
A4: Explosion-proof motors used in underground coal mines should comply with relevant safety standards and regulations. The most common certifications for these motors include ATEX (EU directive), IECEx (International Electrotechnical Commission), and MSHA (Mine Safety and Health Administration) in the United States.
Q5: What are the key features of explosion-proof motors for underground coal mines?
A5: Some key features of explosion-proof motors include:
Robust and durable construction
High-quality insulation systems
Effective cooling mechanisms
Enhanced protection against dust and moisture ingress
Sealed and explosion-proof terminal boxes
Proper grounding provisions
Q6: Can explosion-proof motors be used in other industries or applications?
A6: Yes, explosion-proof motors are not exclusive to underground coal mines. They are also used in various industries where hazardous environments exist, such as petrochemical plants, oil refineries, chemical processing facilities, and grain handling operations.
Q7: What maintenance practices should be followed for explosion-proof motors?
A7: Regular maintenance is crucial for ensuring the safe and reliable operation of explosion-proof motors. Some maintenance practices include:
Regular inspection of motor housing, seals, and terminal boxes
Cleaning and removing dust or debris accumulation
Verifying proper grounding connections
Lubricating bearings as per manufacturer's recommendations
Following the manufacturer's guidelines for motor maintenance and repair.
Q8: Can explosion-proof motors be repaired if damaged?
A8: In the event of motor damage, it is recommended to consult the manufacturer or a qualified service provider specializing in explosion-proof motors. Repairs should be performed by professionals familiar with the specific requirements and regulations for explosion-proof equipment.
Q9: Are there any limitations or considerations when using explosion-proof motors?
A9: Yes, some important considerations include:
Ensuring the correct motor size and specifications for the intended application
Proper installation and alignment of the motor
Adhering to recommended ambient temperature and operating conditions
Following all safety protocols and guidelines provided by the manufacturer and relevant regulatory bodies.
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