Technical parameters of heat-resistant aluminum alloy wire JNRLH1A/G1A-300/40

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　　 Heat resistant aluminum alloy wire JNRLH1A/G1A-300/40-24/7 technical parameters

　　Characteristics of heat-resistant aluminum alloy wire;

　　 Heat resistant aluminum alloy stranded wire has many advantages over steel core aluminum stranded wire, including capacity expansion for line renovation and cost reduction. The characteristics of aluminum alloy wire (taking Al Mg Si heat treated high-strength aluminum alloy wire as an example), the application scope and development trend of advanced industrial countries in the world. Compared with steel core aluminum stranded wire, aluminum alloy wire has the advantages of high strength, light weight, and good conductivity (53% IACS). It has been used for overhead lines since 1921. With the improvement of transmission and transformation technology and the development of transmission and transformation lines, aluminum alloy wires are increasingly demonstrating their superiority. They have been widely used internationally for 50 years and have been widely adopted in Western Europe, Northern Europe, the United States, Canada, Japan and other countries. Almost 90% of transmission lines in France use aluminum alloy wires, and Japan has also reached more than 50%. The usage in Southeast Asian countries is increasing year by year (the current application in China is less than 1%). This is due to the incomparable advantages of aluminum alloy wires compared to steel cored aluminum stranded wires, which have a unique advantage in long-distance, large-span, and ultra-high voltage transmission; In the transformation of rural power grids, it is an advanced and economical good product. It is an upgraded product of ordinary steel core aluminum stranded wire, as well as an energy-saving, material saving, and land saving product (saving transmission corridors). At present, the problem of insufficient transmission capacity in China's power grid is very prominent, and in the expansion and renovation of transmission lines, especially in economically developed and densely populated areas, various obstacles have been encountered due to the lack of corridor resources. Recently, State Grid Corporation of China has clarified that power departments in each province must fully utilize existing power corridor resources, develop technologies to improve the temperature tolerance of transmission lines, use heat-resistant conductors, enhance thermal stability, and improve the transmission capacity of the lines. Raising the operating temperature of transmission line conductors will be an important means of power grid renovation.

　　At present, the conductors used in China's overhead transmission lines are still mostly traditional steel cored aluminum stranded wires (LGJ). Due to their relatively poor heat resistance, transmission capacity is limited to a certain extent and transmission losses are significant. High strength heat-resistant aluminum alloy is an aluminum alloy conductor material with high tensile strength and good heat resistance. After being made into a wire, it has outstanding advantages such as high temperature, good heat resistance, high current carrying capacity, and high tensile strength. It has been widely used abroad with good results. Ultra high strength heat-resistant aluminum alloy wire is used for the renovation of old power lines, with outstanding capacity expansion effect and can save a lot of metal materials and infrastructure investment. It is especially suitable for lines that require high strength and large capacity. In long-distance, large-span, and ultra-high voltage transmission, it has a unique advantage. In power grid renovation, it is an advanced and economical good product. It is an updated product of ordinary steel core aluminum stranded wire, as well as an energy-saving, material saving, and land saving (energy-saving transmission corridor) product. For example, for large-span lines, it can significantly improve transmission capacity and line safety. The use of high-strength heat-resistant aluminum alloy wires will bring significant social and economic benefits. It will become a very important new type of overhead conductor in China's large-span transmission lines. Experts point out that in the construction of power lines in China, especially in the western regions, there is an increasing need to use conductors that can both transmit high currents and withstand high tensions in areas with large spans or drops. Although the unit price of using heat-resistant aluminum alloy wire is 1.58 times that of ordinary wire, its overall cost is much lower than that of using ordinary wire for the circuit.

　　Heat resistant aluminum alloy wire JNRLH1A/G1A-300/40-24/7 technical parameters

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