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Causes and inspection methods of spark generated by DC motor

Causes and inspection methods of spark generated by DC motor

Poor contact between brush and commutator. The reasons are as follows: the surface of the commutator is too dirty; The spring pressure is not suitable, and the spring pressure can be adjusted by spring balance or experience. When replacing the brush, other types of brushes were replaced by mistake. The clearance fit between the brush or brush holder is too tight or too loose. If the fit is too tight, emery cloth can be used to grind. If the contact surface is too small or the brush direction is reversed, the contact surface is too small is mainly caused by improper grinding method when replacing the brush.

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Working system of electric motor

Working system of electric motor

The working system of the motor is an explanation of the load condition of the motor. It includes starting, electric braking, no-load, break-energy stop, and the duration and sequence of these stages. The working system of the motor needs to be considered when selecting the rated capacity of the motor. There are S1 ~ S10 motor working system, the following mainly introduces S1 ~ S3.

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