One: long-term overload operation.Guangxi cable

During overload operation, the conductor heats up as the load passes through the cable due to the heating effect of the current. At the same time, the skin effect of the electric charge, the eddy current consumption of the steel armor, the consumption of the insulating medium will also generate additional heat, which will increase the temperature of the cable. During long-term overload operation, high temperature will accelerate insulation aging even break down the insulation. In the hotter summer, the temperature rise of the cable usually causes the weak part of the cable insulation to be broken down first, so the cable's barrier is more unique in the summer.Guangxi wire cable

Two: trauma.

the analysis of the operation situation in recent years, in Haipudong, the economy is developing rapidly, more more cables are hindered by mechanical damage. For example, non-standard construction during cable laying installation can easily cause mechanical damage; civil construction of directly buried cables can easily damage running cables. Sometimes, if the damage is minor, it can take months even years for the damaged section to collapse form a barrier. Occasional damage can create short-circuit barriers that directly affect the safe manufacture of electricity power users.

Three: cable joint obstacles.

The cable joint is the weak link in the cable line, there are often cable joint obstacles caused by the direct failure of the staff (poor construction). In the manufacturing process of cable joints, if the original network phenomenon such as insufficient joint crimping insufficient heating occurs, the insulation of the cable head will be reduced, which will lead to the occurrence of incidents.

Four: the insulation layer is damp.

This is also very common usually occurs at cable splices in direct burial in pipes. If the cable joints are made into different meshes made in humid climate conditions, water steam will be mixed into the joints, water branches will be formed under the action of the electric field for a long time, which will gradually violate the insulation strength of the cables form obstacles.

Five: chemical attack.

The cable is directly buried in the acid alkali area, the armor layer, lead layer outer protective layer of the cable is often corroded. The protective layer is chemically electrolytically corroded for a long time, causing the protective layer to fail the insulation to decrease. cable barrier. Retrofit: Corrosion status of unit cables is equally importantGuangxi cable manufacturer

The aging of wires cables in Guangxi will lead to high cable temperature, insulation breakdown, even explosion fire. Therefore, we must pay more attention to the safety of cables.

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