The power of the miniature DC motor should be selected according to the power required by the production machinery, and the motor should be operated under the rated load as much as possible. When choosing, you should pay attention to the following two points:
1. If the power of the motor is selected too small, the phenomenon of "small horse-drawn cart" will occur, causing the motor to be overloaded for a long time and its insulation will be damaged. Even the motor was burned.
2. If the power of the motor is selected too large, the phenomenon of "big horse drawn cart" will occur, and its output mechanical power cannot be fully utilized, and the power factor and efficiency are not high, which is not only detrimental to users and the power grid. It also causes waste of power.
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