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A Brief Introduction To The Inspection Of Motor In High Voltage Electric Motor Maintenance
Jun 28, 2017

High Voltage Electric Motor maintenance of the motor inspection is very necessary, because the main part of our application is the motor. Then the High Voltage Electric Motor maintenance in the motor how to check it? Xiao Bian for everyone to answer.

Long-term deactivation or new High Voltage Electric Motor should be checked before use between winding and winding earth insulation resistance. Usually 500V below the motor with 500V insulation resistance table; 500-1000V motor with 1000V insulation resistance table; for more than 1000V motor with 2500V insulation resistance table. Insulation resistance per kilovolt operating voltage shall not be less than 1MΩ, and should be measured in the motor cooling state.

High Voltage Electric Motor maintenance Check the appearance of the motor with or without cracks, the fastening screws and parts are complete, worry about the fixed situation is good. Pull the motor shaft, check whether the rotor can be free to turn, when there is no noise. According to the nameplate shown in the data, such as voltage, power, frequency, connection, speed and power and load comparison is consistent. Check the motor drive mechanism is reliable.

High Voltage Electric Motor maintenance to check the motor ventilation and bearing lubrication is normal. Check the motor grounding device is reliable. Check the motor brush assembly and brush mechanism is flexible, brush handle position is correct.

High Voltage Electric Motor repair when the motor removal method:

1. Remove the external wiring of the motor and make the mark, for example, for the asynchronous motor, should do a good job with the three-phase power line corresponding to the mark, for the DC motor, should be done shunt winding, armature winding and other external wiring Corresponding mark. Then loosen the foot screw and separate the motor from the drive mechanism.

2. Remove the pulley or coupling on the motor shaft, sometimes need to add some kerosene in the gap between the motor shaft of the pulley, so that the penetration of lubrication, easy to disassemble. Some shaft and wheel with a tight, but also the need for rapid heating wheel, in order to remove the wheel.

3. For motors with rolling bearings, remove the bearing cover first, and then loosen the fastening screws of the end cap, and mark the ends of the end cap and the base housing, The screws are screwed into the two screw holes provided in the motor cover to eject the end cap.

4. High Voltage Electric Motor repair The final removal of the motor with a brush, the brush should be removed from the brush grip, to the DC motor, but also the location of the brush neutral mark. Take out the rotor, we must pay attention not to hurt the stator coil, the rotor is not the weight, can be hand out; heavy weight, it should use lifting equipment to hang out.