Reasons for malfunctioning electronic wire harnesses

Check the mesh of the shielding layer: check whether the number of mesh is enough, check the weldability of the copper mesh, scrape the tinned copper wire to see whether there is copper wire inside, and the hardness of the aluminum-magnesium alloy wire is obviously greater than that of the copper wire; Cable with sparse netting, uneven distribution, and loose wrapping with insulation layer. The appearance of the electronic wire is smooth and round, and the color is uniform. Wire and cable companies whose commodities meet the requirements of national norms should strictly control the purchase of raw materials, production equipment and production technology in order to ensure the quality of commodities and ensure that the commodities meet the requirements of national norms. Therefore, the appearance of the electronic wire produced meets the requirements of the specification: lubricated and round, uniform color and luster. However, the appearance of fake defective goods is rough and dull. For rubber-insulated flexible cables, the appearance is round, the sheath, insulation and conductor are tight and not easy to peel off. However, the fake defective commodities have rough appearance, large ovality and low insulation strength of the sheath, which can be torn off by hand. The electronic wires were squeezed and impacted by the outside, which caused the insulation of the wires inside the wiring harness to be damaged, resulting in a short circuit between the wires, causing some electrical equipment to lose control and fuses to be blown. If the circuit is in poor contact, then most of the faults occur in the connector, when the fault occurs, it will make the electrical equipment can not work properly. When judging, turn on the power supply of the electrical equipment, pull or touch the relevant connector of the electrical equipment, when touching a connector, the electrical equipment suddenly can work, and suddenly can not work, it means that the connector is out of order. The main fault of the electronic wire in the use process is that the electronic wiring harness is ignited and burned out, because the electronic wire generally has no safety device. When the electronic wire is connected incorrectly inside the equipment, it is easy to cause short circuit and other undesirable phenomena, thus causing damage to the electronic wire.

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