I believe that everyone has a certain knowledge and understanding of DC motors. In order to strengthen everyone's comprehensive understanding of DC motors, then we will tell you about the static and dynamic detection of DC motors. For details, please see the following explanation:
Static detection:
1. The DC motor needs a megohmmeter to measure the insulation resistance (between the armature and the excitation; between the motor, the excitation and the housing).
2. Pay attention to observe the commutator, it is smooth and without scars.
3. Check the degree of wear of the carbon brushes and whether the "little braid line" is loose or damaged.
4. Check whether the internal connection with the output lead terminal is firm.
Dynamic detection of DC motor:
1. Judgment of geometric centerline, the judgment of voltage symmetry under the same given forward and reverse directions.
2. There is a problem if the no-load current is judged to be greater than 10%, and the normal no-load current should be less than 10% to be normal.
3. Run to the rated speed with no load, and freely stop after power failure. Check the operation of the motor's drive train bearing and determine whether the dynamic balance meets the requirements. There should be no obvious vibration and noise in the motor during taxiing.
www.dw-motor.com