What are the advantages and disadvantages of low-smoke halogen-free cables?
In recent years, the proportion of a series of adverse consequences caused by power cable fires in global power system fire accidents has continued to rise. Therefore, it is increasingly important to use low-smoke halogen-free cables with the advantages of halogen-free, high flame retardant, low smoke, and low toxicity. This requires us to have a full and correct understanding of low-smoke halogen-free cables, which is the primary condition for their correct selection. So what are the advantages and disadvantages of low-smoke halogen-free cables?
Low-smoke halogen-free cables use green and environmentally friendly insulation layers, sheaths, and special oxygen-insulating layer materials, which not only have good electrical properties and physical and mechanical properties, but also ensure that the product does not contain halogen, solve the "secondary pollution" formed during combustion, and avoid the toxic substances produced when traditional PVC wires are burned.
From the perspective of environmental protection, the insulation and sheath of low-smoke halogen-free cables do not contain heavy metals such as lead and cadmium that are harmful to the human body. The cables will not pollute the soil and water sources when used and handled. Compared with traditional cables, it is more environmentally friendly. Therefore, low-smoke halogen-free cables are also called environmentally friendly cables, which shows that they are still very friendly to the environment. Environmentally friendly cables are not easy to burn when they encounter fire, which can prevent the spread of flames and the expansion of disasters after burning. Especially in modern construction, super-high-rise buildings and modern material products have appeared, and rescue is very difficult when a fire occurs. The use of low-smoke halogen-free cables can increase rescue time and reduce the harm of harmful gases to the human body.
Moreover, low-smoke halogen-free cables use new special coating materials that are pollution-free to the environment. During the production, use and combustion process, no toxic gases are produced, and the emission of acidic gases is extremely small, which reduces damage to personnel and equipment. Especially in places where people gather, it is very necessary to use low-smoke halogen-free cables.
However, low-smoke halogen-free cables also have disadvantages, that is, the price and popularity of use. Although low-smoke halogen-free cables are environmentally friendly, their raw materials and technical costs are more expensive than general polyvinyl chloride cables. Moreover, since ordinary PVC and polyethylene cables have some excellent properties such as excellent conductivity and mechanical properties, low-smoke halogen-free cables cannot completely replace ordinary cables and are therefore not widely used.
However, at present, low-smoke halogen-free cables are more and more widely used in high-rise buildings, stations, subways, airports, hospitals, large libraries, stadiums, family residences, hotels, hospitals, office buildings, schools, shopping malls and other densely populated places. It is believed that as people's fire awareness increases, low-smoke halogen-free cables will be more and more used in our lives.
