Explosion proofMotorWhat is the cause of the case overheating?how to respond?

The reasons for the overheating failure of the explosion-proof motor shell are as follows:

1. Overload;

2. Single-phase operation;

3. The power supply voltage is too low;

4. The moment of inertia of the load is large;

5. Start frequently;

6. The ambient temperature is too high;

7. Poor access to the society by operating equipment;

8. Poor ventilation;

9. Voltage unbalance;

10. Conflict between stator and rotor;

11. Broken bars of cage rotor;

12. The stator winding is grounded or there is a short circuit between turns or phases;

13. The motor connection is faulty.Frequency conversion speed motorA general term for motors driven by frequency converters.In fact, the motor designed for the frequency converter is a special frequency conversion motor. The motor can achieve different speeds and torques under the drive of the frequency converter to adapt to the changes in the demand of the load.Explosion-proof motorsA type of motor that can be used in flammable and explosive plants, and it does not generate sparks during operation.Explosion-proof motors are mainly used in coal mines, oil and gas, petrochemical and chemical industries.In addition, it is also widely used in sectors such as textiles, metallurgy, city gas, transportation, grain and oil processing, papermaking, and medicine.The motor is an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction.

The overheat treatment method of explosion-proof motor shell is as follows:

1. Reduce the load or the alternative of the motor with greater power;

2. Check the fuse, control the contacts of technical equipment, power cords, etc., and eliminate some faults;

3. Check the power supply, replace the load of other wiring or cut off the power cord;

4. According to China's specific development status, the electric motor is converted or other methods are adopted;

5. Reduce the start frequency, etc.;

6. Improve ventilation;

7. Adjust the contact somewhat;

8. Remove objects that prevent ventilation, and remove dirt, dust and debris from the air duct to clear the air;

Check the power supply. For other load power lines, the three-phase should be even;

10. Inspect the bearing, the bearing and the loose stator and the rotor without bad condition to install the bearing chamber and make corrections;

11. Perform repair welding or replacement of copper bar rotors, and replace or change the cast aluminum rotor system to copper bar rotors;

12. Review, find out the point of failure, and make modifications;

13. The △ connection method uses the motor to misconnect the Y operation, or the Y connection method to carry out the motor misconnection △ operation, it is necessary to change the connection immediately after a power outage occurs.