Brushless DC motor knowledge
2015/7/20 15:30:50
Brushless DC motor knowledge
(1) in order to remove the dust from the surface of the motor and clean the surface dirt before using it.
(2) to choose the working place of the motor to clean up the environment.
(3) familiar with motor structure characteristics and technical requirements.
(4) preparation of the necessary tools for disassembly (including special tools) and equipment.
(5) in order to know more about the defects in the operation of the motor, the test can be done before the disassembly. Therefore, the motor load test, a detailed examination of various parts of the motor temperature, sound, vibration, and the test voltage, current and speed, and then disconnect the load, a no-load test alone, measured the no-load current and no-load loss, record.
(6) cut off the power supply, remove the motor external wiring, make a good record.
(7) test the insulation resistance of the motor with the appropriate voltage. In order to repair the insulation resistance with the last measured value compared to determine the motor insulation insulation and trends, should be measured under different temperature of the insulation resistance value is converted into the same temperature, the general conversion to 75 DEG C.
(8) test absorption ratio K. When the absorption ratio is greater than 1.33, indicating that the motor insulation has not been affected by moisture or humidity is not serious. In order to compare with the previous data, the same temperature should be measured at any temperature.
