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What is the reason for the failure of the miniature DC motor?

2019-11-05 10:48:00

1. In terms of winding faults: windings have inter-turn short-circuit faults; there are two or more contacts between the windings and the casing, resulting in ground faults.
2. In terms of winding connection: the group components are not connected properly; the wheel miniature DC motor connection line, the lead length or cross-sectional area does not meet the requirements. Check the connection rules of the winding components, and correct the incorrectly connected components.
3. In terms of wire breakage: the joint of the joint wire is broken; the wire of the loop lead or the bend is broken; there is a break of the wire around the wire or in the parallel branch. Check with the meter, gently shake the wire, the pointer of the meter will swing with it, it is more convenient to check the broken wire with a test lamp or an insulation resistance meter, and re-weld after checking.
4. In terms of electromagnetic wire specifications: the thickness of the magnetic wire is uneven, one section is qualified, and one section is unqualified.
5. Rewinding coil technology: the size of the miniature DC motor coils are inconsistent, the number of coil turns is not correct, and the pulling force is uneven.

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