Causes of aging of Yanggu cables
Release Time：
2020-08-12
What caused the aging of Yanggu cable? Haohui and the power cable manufacturer will help you summarize that the breakdown of the insulation is the cause of the aging problems of Yanggu cable. There are many elements that cause insulation degradation.
What caused the aging of Yanggu cable? Haohui and the power cable manufacturer will help you summarize that the breakdown of the insulation is the cause of the aging problems of Yanggu cable. There are many elements that cause insulation degradation. Based on practical operation experience, the following reasons are summarized:
Damage from external forces. From the data analysis in recent years, most of the current Yanggu cable faults are caused by mechanical damage. For example, when Yanggu cable is not constructed in accordance with normal specifications during the installation process, it is easy to cause mechanical damage; manufacturing and construction on directly buried Yanggu cable is also particularly easy to damage the cable in operation. Sometimes if the damage is not severe, it will take several years to cause a complete breakdown of the damaged part to constitute a fault, and sometimes a relatively severe damage may cause a short-circuit fault, which directly affects the safety of the electricity user.
Chemical corrosion. Buried Yanggu cable in a place with acid and alkali effects is likely to corrode the armor or outer protective layer of the cable. The protective layer suffers from chemical corrosion or electrolytic corrosion for a long time, which makes the protective layer ineffective and the insulation declines. Cable failure in Yanggu.
Reasons for cable aging: insulation is damp. This situation is also very easy to occur, generally occurs at the cable joints directly buried or in the pipe. For example: unqualified Yanggu cable joints and the time of making joints are finished under wet conditions, which will cause water or water vapor to enter the joints. Over time, they will form water branches under the effect of electric fields and gradually damage the insulation strength of the cables. And form a problem.
Reasons for the aging of Yanggu cables: cable joint failure. The most vulnerable link in the Yanggu cable line is the cable joints. Cable joint faults often occur due to personnel failing to operate according to regulations during construction. In the process of manufacturing cable joints, if there are reasons such as insufficient joint crimping, insufficient heating, etc., the insulation of the cable head in Yanggu will drop, which will cause accidents.
For more questions, please leave a message on the official website of Yanggu Cable.（www.mityo.com.cn）
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