Advantages of aluminum alloy power cable
[China Aluminum Industry Network] Aluminum alloy power cable has outstanding mechanical and electrical functions, making it widely used in various areas of the national economy, such as the general disaster, high-rise construction, elevators, large and small supermarket shopping malls, subways, Airports, stations, hospitals, banks, office buildings, hotels, postal telecommunication buildings, exhibition halls, libraries, museums, ancient buildings, campuses, power buildings, public entertainment venues, tunnels, underground construction, warehouses, etc., can also be used in metallurgy , iron and steel, coke, coal mines, power plants, power transmission and transformation stations, shipbuilding, petroleum, chemical, pharmaceutical, nuclear power plants, aerospace, military, papermaking and other occupations, as well as home appliances, cars, public transport facilities and so on. Aluminum alloy power cables have the following advantages:
1, anti-creep function
The alloy material and annealing treatment skills of aluminum alloy conductors reduce the “creep†tendency of the conductor under heat and pressure. Compared to pure aluminum, the creep resistance function improves by 300%, avoiding looseness due to cold flow or creep. .
2, tensile strength and elongation
Compared with pure aluminum conductors, aluminum alloy conductors have been joined with extra components and selected exceptional processing skills, which have greatly improved the tensile strength, and the elongation rate has improved to 30%, making them more safe and reliable.
3, thermal expansion coefficient
The coefficient of thermal expansion is used to calculate the scale change of the data when the temperature changes. The coefficient of thermal expansion of aluminum alloys is appropriate for copper. For many years, aluminum adapters have been used reliably for copper and aluminum conductors, and most of the electrical connectors used today are made of aluminum, which is particularly suitable for aluminum alloys. Therefore, the expansion and shortening of the aluminum alloy conductor and the adapter are completely the same.
4, convergence function
The electrical connection made of aluminum alloy is as safe and secure as the connection made of copper conductor. The composition of the aluminum alloy greatly improves its bridging function. When the conductor is annealed, the increased iron has a high-intensity anti-creep function, which ensures secure connection even during long-term overload and overheating.
5, strong bearing capacity
Aluminum alloys improve the tensile strength of pure aluminum. Aluminum alloy cables can support 4000 meters in length and copper cables can only support 2750 meters. This advantage is particularly evident in the wiring of large-span constructions (such as stadiums).
6, anti-corrosion function
The inherent anti-corrosion function of aluminum is due to the fact that when the aluminum surface comes in contact with air, it forms a thin, consolidated oxide layer, which is particularly resistant to various forms of corrosion. The addition of rare earth elements in the alloy can further improve the corrosion resistance of the aluminum alloy, especially electrochemical corrosion. Aluminum's ability to withstand harsh environments has made it widely used in cable tray conductors, as well as many industrial components and containers. The onset of corrosion is usually related to the presence of a different metal in the wet environment. Appropriate maintenance measures can be used to avoid the onset of corrosion, such as the use of lubricating oils, antioxidants, and maintenance coatings. Alkaline soils and some types of acidic soils are more corrosive to aluminum, so straight-buried aluminum conductors should use insulation or molded sheaths to avoid corrosion. In sulphur-containing environments, such as railway tunnels and other similar places, aluminum alloys have much better corrosion resistance than copper.
7, flexibility
Aluminum alloys have good tortuous function, and their common alloy formula and processing skills make the flexibility greatly improved. Aluminum alloy is 30% more flexible than copper and 40% lower in resilience than copper. Generally, the bending radius of the copper cable is 10 to 20 times the outer diameter, while the bending radius of the aluminum alloy cable is only 7 times the outer diameter, and the terminal connection is easier.
8, armoring characteristics
The commonly used armored cables in China are mostly steel tape armored and have low safety levels. When subjected to external destructive forces, they have poor resistance, simple breakdown, heavy weight, high installation cost, and poor corrosion resistance. The use of life is not long. The metal chain armoured cables developed by us in accordance with the US regulations use aluminum alloy chain interlocking devices, and the interlocking structure between the layers ensures that the cables can withstand the destructive forces of the outside world, even if the cables are under great pressure. When impact force is applied, the cable is not easily broken down and the safety function is improved. The armored construction together blocks the cable from the outside and, even in the event of a fire, the armored layer improves the fire-retardant and fire-resistant rating of the cable and reduces the risk of fire. The aluminum alloy armored armored structure is lighter than the steel armored armor and is lightly laid and laid, making it possible to avoid bridge equipment and reduce equipment costs by 20% to 40%. According to the different places of use, different outer jacket layers can be selected to make the use of armored cables more widely available.
9, compression characteristics
In terms of bulk conductivity, aluminum alloys are not as good as copper, but the conductors we developed have not only improved from the aspect of data functions, but also achieved great technical breakthroughs. Therefore, we use ultra-conventional compression techniques to make the compression coefficient. It reached 0.93, and the coefficient of compression of the profile line could reach 0.95, which was found in China. After a larger limit of compression, the lack of bulk conductivity of the aluminum alloy can be compensated for, so that the stranded conductor core, as a solid conductor, typically decreases the outer diameter of the core significantly, and the conductive function is improved, in the case of equivalent current carrying capacity. The outer diameter of the conductor is only 10% larger than the copper cable.
led grow light nearby,led grow light manual,led grow in lights
Shenzhen Pvison Technology Co., Ltd. , https://www.pvisunggrowlight.com