Analysis of the causes of overheating of explosion-proof motor casings

Due to certain factors and special reasons, the explosion-proof motor casing overheats, which may be caused by the following aspects:
1. Overload;
2. Single-phase operation;
3. Low power voltage;
4. Large inertia moment of load;
5. Frequent starts;
6. Environment temperature is too high;
7. Poor contact with the control device;
8. Poor ventilation;
9. Voltage imbalance;
10. Stator and rotor conflict;
11. Phase loss;
 
Main processing methods are as follows:
1. Reduce the load or replace a motor with a larger power;
2. Check fuses, control device contacts, power lines, etc., to eliminate problems;
3. Check the power supply, replace the wiring or reduce other loads on the power lines;
4. Refurbish the motor or adopt other methods according to the specific situation;
5. Reduce the starting frequency, etc;
6. Improve ventilation;
7. Adjust the contacts;
8. Remove objects that hinder ventilation, clean dirt, dust and debris from the air ducts, and keep the air fresh;
9. Check the power supply and other loads on the power lines to ensure uniform three-phase power;
10. Check if the bearings, bearing housings, and shafts are loose, and install the stator and rotor under any unfavorable conditions.
11. Electrical inspection to check for problems with voltage wiring;