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About UsHongsheng Wire and Cable Co., Ltd. is a key enterprise in Zhejiang Province specializing in the production of wires and cables, integrating industry, commerce, trade, production, education, and research. Its main production, processes, and testing equipment are all designed and configured according to international standards.
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ProductsEmploy scientific management and quality assurance systems based on GB/T19001—IS09001 and GB/T24001—ISO14001 environmental management systems to organize production management.
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Below is an explanation of the causes of aging in power cables and the advantages of fire-resistant cables
Below is an explanation of the causes of aging in power cables and the advantages of fire-resistant cables. Analysis of the causes of aging in power cables The aging of power cables is a common phenomenon in daily use and engineering construction, inducing safety accidents. The direct cause of the failure is the reduction in the electrical and mechanical properties of the insulating material. Based on practical operating experience and simulations using professional aging testing equipment, this situation is introduced.
The following explains the causes of aging in power cables and the advantages of fire-resistant cables
Analysis of the Causes of Power Cable Aging
Power cable aging is a common phenomenon in daily use and engineering construction, inducing safety accidents. The direct cause of the failure is the reduction in the electrical and mechanical properties of the insulating material. This situation is introduced based on practical operating experience and simulations using professional aging testing equipment.
(1) Insulation dampness, generally occurring at cable joints buried directly or in conduits. For example, if the cable joint is substandard, and if the joint is made in a humid climate, water or water vapor will enter the joint. Over time, under the action of the electric field, it will gradually damage the cable's insulation performance, leading to failure.
(2) Chemical corrosion. Cables directly buried in acidic or alkaline areas often lead to corrosion of the cable armor or outer protective layer. Long-term chemical or electrolytic corrosion causes the protective layer to fail, affecting insulation performance and leading to cable failure.
(3) Due to the thermal effect of the current, when current passes through the cable, the conductor heats up. At the same time, the skin effect of the charge and the eddy current loss of the steel armor, as well as the loss of the insulating medium, will also generate additional heat, thereby increasing the cable temperature. Long-term overload operation will accelerate insulation aging and even damage the insulation. Especially in hot summers, the temperature rise of the cable often leads to loose insulation, therefore, cable failures are more frequent in summer.
(4) Environment and temperature. The external environment and heat sources of the cable can also cause the cable temperature to be too high, resulting in insulation breakage, and even explosions and fires.
Why are fire-resistant power cables more advantageous?
Fire-resistant power cables have become indispensable in daily life and manufacturing. However, there are safety accidents caused by cables and wires, especially explosions after cable and wire burning, which can easily cause casualties. Every year, various cables and wires cause safety accidents, and these accidents continue to occur. General cables and cable sheaths are mostly made of plastic and plastic products, which release a large amount of smoke and harmful gases during combustion. Once the cable burns and explodes, it will also cause harm to surrounding people and the environment.
In order to better reduce the harm caused by cable damage, fire-resistant power cables have been designed. Fire-resistant power cables are a general term for fire-resistant cables and fire-resistant power cables, and all have a certain fire resistance rating. However, many people cannot distinguish between the fire resistance rating and the definition of fire-resistant power cables. According to their characteristics, fire-resistant power cables can replace fire-resistant power cables, but fire-resistant power cables cannot. This is mainly due to their different principles. The design principle of flame-retardant cables is based on the flame-retardant effect of halogen lamps and whether or not there are halogen flame-retardant cables. It uses deposited water to lower the temperature, but the principle of flame-retardant power cables is different from that of flame-retardant cables. The data of flame-retardant power cables use high fire-resistant black mica and can be conventionally applied to fire accidents.
If you need to purchase power cables, please feel free to contact our factory. Our company has various cables, welcome to inquire.
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