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What factors will affect wiring harness aging

What factors will affect wiring harness aging

Blog | Dec 06,2021

The aging of wire harness is the most common problem of wire harness.
It is very necessary to explore the aging causes of wire harness and prevent the aging of wire harness.
The most direct reason for the aging of wire harness is the breakdown caused by the reduction of insulation.
Wire harness E tells you that there are many factors contributing to the reduction of conductive insulation:

factors will affect wiring harness aging

1. The wiring harness joint failure is the weakest link in the line, and the wiring harness joint failure caused by personnel’s direct fault often occurs.
In the process of making the wiring harness joint, if the joint is not pressed tightly, and the heating is not sufficient, the insulation of the wiring harness head will be reduced, resulting in accidents

The wiring harness joint failure

2. External damage A considerable number of wire harness failures are caused by mechanical damage.
For example: wiring harness installation wiring “is not standard construction, easy to cause mechanical damage;
Sometimes if the damage is not serious, it will take several months or even several years to lead to the complete breakdown of the damaged part and form a fault, and sometimes the serious damage may occur short circuit fault, directly affecting the safety of production.

3. Environment and temperature The external environment and heat source where the cable bundle resides may also cause the cable to overtemperature, insulation breakdown, or even explosion and fire

Cable bundle

4. Chemical corrosion Wire harness working in areas with acid and alkali action will often cause the armor, lead skin or outer protective layer of wire harness to be corroded.
The protective layer suffers chemical corrosion or electrolytic corrosion for a long time, resulting in the failure of the protective layer, insulation reduction, and wire harness failure.

5. long-term overload operation overload operation, due to the thermal effect of the current, when the load current passes through the wire harness, the conductor is bound to heat up, so as to increase the temperature of the wire harness. Long-term overload operation, too high temperature will accelerate the aging of insulation, even insulation breakdown. Especially in the hot summer, the temperature rise of the wire harness often leads to the breakdown of the weak insulation of the cable, so in summer, the failure of the wire harness is especially many.
Such as the occurrence of auto spontaneous combustion accident.

Wire harness

6. Insulation is also very common, such as unqualified wiring harness joint and joint made in humid climate conditions, which will make the joint water or water vapor, water branches formed under the action of electric field over a long time, and gradually damage the insulation strength of wiring harness and cause failure.

Zhejiang Lianhe electronics Co., Ltd. is a professional manufacturer of connector, terminal wire, wire harness and so on.
Please contact us if you have any requirements or questions

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