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Talking about the causes of fire accidents in highly flexible cables

by:AAA     2020-03-04
Nowadays, highly flexible cable has been used more and more widely, but with its popularization in the national power supply lines, some of its safety problems have gradually attracted people's attention, especially in recent years, the occurrence of cable fire accidents reminds people to pay special attention when using this kind of cable. So, what are the quality causes of fire accidents in highly flexible cables? Let's go and find out! 1. The nominal cross section of the conductor of the cable core does not meet the requirements. Generally, the specified nominal interface is larger than the actual produced cable, and the cable whose nominal value is off the standard will have a larger unit current density, in the process of its work, the cable is easy to cause fire accidents because it cannot normally generate heat. 2. Poor cable production process. The so-called no rape or business, although not every manufacturer is like this, it is inevitable that some businesses in the market will not operate strictly according to the standard in the process of producing cables in order to seek personal gain. Even some merchants will use some inferior products to make them shoddy, which leads to the fire caused by the quality of the cables finally produced. 3, cable material is not pure or unqualified. The core of the cable is generally mainly made of some conductive materials of copper or aluminum, and many merchants often use unqualified or insufficient purity materials in the production process, this will lead to the reduction of power because it contains more impurities. Therefore, the materials used as core wires must be some high-quality electrolyte materials, mainly copper and aluminum. 4. The composition of the insulation material does not meet the requirements or is poorly processed. We know that the outer part of the cable is generally wrapped by a material with insulation properties, if the quality of this insulating material is not up to standard, it will reduce its pressure resistance and form an unqualified resistance value during use. In addition, long-term use will also shorten its service life, and it is easy to cause fire due to some short-circuit faults. 5, improper transportation. Most of the cables go through strict quality inspection before leaving the factory, but they are squeezed and collided due to lack of correct protection measures during transportation, thus, the insulation layer is damaged or the internal core wire is broken.
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