What factors will affect the wire aging

Wire aging is the most common problem with wire harnesses. It is necessary to investigate the cause of wire harness aging and prevent wire aging. The most direct cause of wire aging is the breakdown of insulation and breakdown. The wire harness factory tells you that there are many factors that reduce the conductivity of the conductive:

1. External force injury

A considerable number of wire harness failures are now caused by mechanical damage. For example: when the wiring harness is installed and wiring, it is not standardized, which is easy to cause mechanical damage. Sometimes, if the damage is not serious, it will take several months or even several years to cause the damaged part to completely break down to form a fault. Sometimes the damage may be short-circuited, which may directly affect the short-circuit fault. Safe Production.

2. Insulation damp

This situation is also very common. For example, if the harness connector is not qualified and the joint is made under humid climatic conditions, the joint will be filled with water or mixed with water vapor. Over time, water branches are formed under the action of the electric field, which gradually damages the insulation of the wire harness. Strength causes failure.

3. Chemical corrosion

Wire harnesses work in areas with acid and alkali, which often cause wire harness armor, lead or outer sheath to be corroded. The protective layer is chemically corroded or electrolytically corroded for a long time, causing the protective layer to fail, the insulation is lowered, and the wire harness is also caused. malfunction.

4. Long-term overload operation

Overload operation, due to the thermal effect of the current, the load current will inevitably cause the conductor to heat up when passing through the wire harness, thereby increasing the temperature of the wire harness. Excessive temperatures during the long-term overload operation accelerate the aging of the insulation and the insulation is broken down. Especially in the hot summer months, the temperature rise of the wiring harness often leads to the breakdown of the cable insulation first, so in the summer, the wiring harness is particularly faulty. Such as the occurrence of car spontaneous combustion accidents.

5. Harness connector

The harness connector is the weakest link in the line, and the harness connector failure caused by the direct failure of the person often occurs. During the process of making the wire harness joints, if the original mesh is not tightly pressed or insufficiently heated, the insulation of the wire harness head will be reduced, causing an accident.

6. Environment and temperature

The external environment and heat source where the harness is located can also cause excessive cable temperature, insulation breakdown, and even an explosion.