FAQ

• Why do explosion-proof motors overheat?

  Overheating of the explosion-proof motor casing may be caused by the following:
    1. Overloading;
    2. Single-phase operation; 
    3. Low supply voltage;
    4. Large moment of inertia of the load.
    5. Frequent start;
    6. Ambient temperature is too high;
    7. Poor contact with control equipment;
    8. Poor ventilation;
    9. Voltage imbalance.
    10. Conflict between stator and rotor; 
    11. Lack of phase; 

• How to prevent mechanical sparks from explosion-proof motors?

  1. For explosion-proof motors with roller bearings, the radial one-sided air gap between standstill and rotation must comply with the minimum air gap standard.
  2. For explosion-proof motors with roller bearings, the g-value is calculated according to the minimum air gap standard and then multiplied by 1.5.
  3. Explosion-proof motor end cover should have 120 ° in the circumferential direction of the g-value measurement holes, and in the static state of the measurement of the three points, in order to check whether they are lower than the specified minimum air gap value.
  4. There should be enough clearance and gap between the moving and static parts to avoid sparks from friction.

• Why are Y series three-phase asynchronous motors often used in industrial applications?

  Electric motors have been used in a wide variety of industries such as food, chemical, metallurgical, paper mills, water treatment and extraction systems. These applications include installations where machine parts run at fixed or variable speeds, such as B. lifting systems, transportation systems, ventilation and air conditioning systems, not forgetting the commonly used pumps and compressors.

  From the above considerations, it is easy to deduce why the Y series three-phase asynchronous motor is considered to be a motor with a very wide range of industrial applications (the power consumption of electric motors accounts for about 75% of the total industrial consumption). Considering these figures, it is possible to understand the importance of reducing power consumption for management (the cost of the entire life cycle of the motor is due to approximately 98% of the power consumption, with the remaining 2% due to acquisition and maintenance costs) as well as the importance of improving overall energy efficiency.