How to extend the service life of wire and cable?

Wire and cable as an important component of the power system, the appearance of the insulation layer made of plastic and rubber, in the long-term use of the process of external aggression, climate and overloaded operation and other impacts will lead to insulation degradation and breakdown, which greatly reduces the service life of the cable, bringing the most direct economic losses, and threaten the safety of electrical equipment and electricity.

I. How to correctly use the wire and cable method?1. Laying wire and cable underground, the environment is humid, moisture oil and other corrosive substances will corrode the outer skin of the cable immersed in the metal conductor, prone to short-circuiting leakage, in addition to affecting the service life of the cable, but also prone to cause accidents. Therefore, pay attention to moisture when laying wire and cable. Laying in the exterior of the wire and cable mainly rely on the outer insulation layer insulation, in addition to the cable needs to be of high quality, pay attention to not be man-made damage, in the laying to avoid cuts and abrasions, wear and tear and other damage to the insulating layer, and at the same time, according to the environment to choose the appropriate wire and cable.

2. Outdoor wires and cables, whether the sun's ultraviolet radiation or suffered wind and rain infringement will accelerate the aging process, resulting in the insulation skin becomes hard and brittle or even fall off. So outdoor use of wire and cable should pay attention to a certain degree of protection, regular inspection. Because the current has a thermal effect, the load current flow will cause the conductor hot, in addition to the skin effect of the charge and its steel armor eddy current loss, insulation layer dielectric loss will produce additional heat, and then make the wire and cable temperature rise, long-term overloaded operation, the temperature is too high will accelerate the aging of the insulation layer, so that the insulation layer thermal breakdown, or even an explosion, fire.

-II. How to extend the service life of wire and cable within a reasonable range?

Wire and cable should be stored to avoid water, while acids, alkalis and mineral oils can not be contacted, can not be placed in the sun for a long time in the sun or super-high-temperature environments, is strictly prohibited corrosive gases, flammable and explosive explosive gases, such as the presence of hazardous cables and gases. In addition, wire and cable long-term storage will be subject to extrusion pressure, may lead to deformation of the sheath and cable, should be rolled once a regular cable. The life of wire and cable mainly depends on the quality, thickness, installation environment, use of the environment. At the same time, the correct use, care and maintenance of wire and cable, can make the cable more likely to avoid many problems, to achieve a greater service life.

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