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Avoid 6 motor maintenance burned in the technical maintenance measures

Avoid 6 motor maintenance burned in the technical maintenance measures

  • Categories:Industry News
  • Author:
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  • Time of issue:2014-07-31 14:27
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[Summary information]In the operation of the motor to avoid burning, in addition to the operation before taking the necessary technical protection measures, the most effective and practical way to prevent the correct tech

Avoid 6 motor maintenance burned in the technical maintenance measures

(Summary description)In the operation of the motor to avoid burning, in addition to the operation before taking the necessary technical protection measures, the most effective and practical way to prevent the correct tech

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2014-07-31 14:27
  • Views:
Information
In the operation of the motor to avoid burning, in addition to the operation before taking the necessary technical protection measures, the most effective and practical way to prevent the correct technical maintenance. The following 6 points.
 
1. Always keep the motor clean
 
Motor running, at least 3 meters around the inlet does not allow dust, water stains and other debris to prevent inhalation of the motor internal, the formation of short circuit medium, or damage to wire insulation, resulting in short circuit between the box, the current increases, the temperature Rise and burn the motor. Therefore, to ensure that the motor has sufficient insulation resistance, and good ventilation cooling environment, in order to make the motor in a long run to maintain a safe and stable working condition.
 
2. Keep the motor often working at rated current
 
Motor overload operation, the main reason is due to drag the load is too large, the voltage is too low, or caused by the mechanical jamming caused. If the overload time is too long, the motor will absorb a large amount of active power from the power grid, the current will increase sharply, the temperature will also rise, the motor insulation at high temperatures will aging failure and burned. Therefore, the motor is running, we should pay attention to constantly check the transmission operation is flexible and reliable; the concentricity of the coupling is standard; gear transmission flexibility, if there is a phenomenon of stuck, stop immediately find out the cause of the problem After running.
 
3. Often check the motor three-phase current is balanced three-phase asynchronous motor, the phase current of any phase current and the other two-phase current difference does not allow more than 10%, so as to ensure the safe operation of the motor. If more than that indicates that the motor is faulty, you must find out the reasons for the timely exclusion.
 
4. Check the motor temperature To always check the motor bearings, stator, shell and other parts of the temperature without exception, especially for voltage, current and frequency monitoring and no overload protection of the motor, the temperature rise is more important to monitor. Motor bearing overheating, lack of oil, if found near the bearing temperature rise is too high, it should immediately stop checking. Bearing rolling body, raceway surface cracks, scratches or loss, bearing clearance is too large shaking, the inner ring on the shaft whether rotation. Any of these phenomena, you must update the rear bearing can be re-operated.
 
5. Observe whether the motor vibration, noise and abnormal odor. If the motor vibration, will cause the load part connected to the different concentricity increases, the formation of the motor load increases, overload operation, it will burn the motor. Therefore, the motor running, especially high-power motor should always check the anchor bolts, motor cover, bearing gland and other loose, grounding device is reliable, identify problems and solve them in time. Noise and odor is the abnormal motor operation, then a serious precursor to failure, we must always find out the reasons to find out.
 
6. To ensure the normal operation of the equipment to start the motor Starting the equipment state of the art, the normal start of the motor plays a decisive role. Practice has proved that the vast majority of burned motor, the reason is mostly caused by the equipment does not work properly. Such as starting equipment phase lack of start, contactor contacts arc, sparks and so on. The start-up equipment maintenance is mainly clean, tight. If the contactor contact will not clean contact resistance increases, causing heat burned contacts, resulting in lack of phase and burn the motor; contactor coil pull the core rust and dust accumulation, will make the coil lax and occur Strong noise, increase the coil current, burned coil and cause failure.
 
Therefore, the electrical control cabinet should be located in a dry, ventilated and easy-to-operate location, and regular dust removal. Always check the contactor contacts, the coil core, the screws and other connections are reliable, mechanical parts are flexible action, to maintain a good technical state, so as to ensure the smooth start-up without burning the motor.

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