Advantages of aluminum alloy power cable

[China Aluminum Industry Network] Aluminum alloy power cable has good mechanical properties and electrical properties, making it widely used in various fields of the national economy, such as ordinary disasters, high-rise buildings, elevators, large and small supermarket shopping malls, subways, Airports, railway stations, hospitals, banks, office buildings, hotels, post and telecommunications buildings, exhibition halls, libraries, museums, ancient buildings, schools, power buildings, public entertainment venues, tunnels, underground buildings, warehouses, etc., can also be used in metallurgy. , iron and steel, coke, coal mines, power plants, transmission and transformation stations, shipbuilding, petroleum, chemical, pharmaceutical, nuclear power plants, aerospace, military, papermaking and other industries, as well as home appliances, automobiles, public transport facilities, and so on. Aluminum alloy power cables have the following advantages:

1. Creep resistance The alloy material and annealing process of aluminum alloy conductors reduce the “creep” tendency of the conductor under heat and pressure. Compared to pure aluminum, the creep resistance performance is increased by 300%, and the cold flow is avoided. Creep-induced relaxation problems.

2, tensile strength and elongation Aluminum alloy conductor compared to pure aluminum conductor, due to the addition of special components and the use of a special processing technology, greatly increased the tensile strength, and the elongation rate increased to 30%, use More safe and reliable.

3. Thermal Expansion Coefficient The thermal expansion coefficient is used to calculate the dimensional change of the material when the temperature changes. Aluminum alloys have a coefficient of thermal expansion comparable to that of copper, and aluminum connectors have been reliably used for copper and aluminum conductors for many years, and most of the electrical connectors used today are made of aluminum, which is particularly suitable for aluminum alloys. Therefore, the expansion and contraction of the aluminum alloy conductor and the connector are completely the same.

4. Connection Performance The electrical connection made of aluminum alloy is as safe and stable as the connection made of copper conductor. The composition of the aluminum alloy greatly improves its connection performance. When the conductor is annealed, the added iron produces high-strength creep resistance, which ensures stable connection even during prolonged overload and overheating.

5, strong weight bearing capacity Aluminum alloy to improve the tensile strength of pure aluminum, aluminum alloy cable can support 4000 meters in length of self weight, copper cable can only support 2750 meters. This advantage is particularly prominent in the wiring of large-span buildings (such as stadiums).

6. Corrosion Resistance The inherent corrosion resistance of aluminum stems from the fact that when the aluminum surface comes into contact with air, a thin and strong oxide layer is formed. This oxide layer 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. Corrosion is usually related to the connection of different metals in a wet environment. Corresponding protective measures can be used to prevent corrosion, such as the use of lubricating oils, antioxidants, and protective coatings. Alkaline soils and some types of acidic soils are more corrosive to aluminum. Therefore, aluminum conductors laid directly on the ground should be protected against corrosion by using insulating layers or molded sheaths. In sulfur-containing environments, such as railway tunnels and other similar places, aluminum alloys have much better corrosion resistance than copper.

7, flexible aluminum alloy has a good bending performance, its unique alloy formula, processing technology, a substantial increase in flexibility. 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 of domestic commonly used armored cable, mostly steel tape armor, low security level, when subjected to external destructive power, its poor resistance, easily lead to breakdown, and heavy weight, installation costs are very high, plus Poor corrosion resistance, long service life. The metal chained armored cable developed by us according to the US standard adopts aluminum alloy chain interlocking equipment, and its interlocking structure between layers ensures that the cable can withstand the powerful destructive force of the outside world, even if the cable is under great pressure. When impact force is applied, the cable is not easily broken down, improving the safety performance. At the same time, the armored structure isolates the cable from the outside. Even in the event of a fire, the armored layer enhances 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 easy to lay. It can be installed without a bridge and can reduce installation costs by 20%-40%. According to the different places of use, different outer jacket layers can be selected to make the use of armored cable more extensive.

9. Compact pressure characteristics In terms of bulk conductivity, aluminum alloys are not as good as copper, but the conductors we developed not only improve the material properties, but also make major breakthroughs in the process. We use ultra-conventional compression technology. The coefficient of compression is 0.93, and the coefficient of compression of the profile line can reach 0.95, which is the first in the country. Through the larger limit of compression, it can make up for the lack of bulk conductivity of aluminum alloy, making the stranded conductor core as a solid conductor, significantly reducing the outer diameter of the core, improving the conductivity, and the conductor at the same current carrying capacity. The outer diameter is only 10% larger than the copper cable.

1. Technical standard: BS EN 10202, DIN EN 10203, GB/T2520 , JIS G3303
2. Steel type: MR, SPCC
3. Thickness: 0.115 - 0.50 mm
4. Width:  600 - 1050 mm
5. Length: 600-1200mm
Tin Coating: ordinary 2.8 or 2.8g and 5.6g or 5.6g, we can produce according to customer's requests
Excellent barrier property. Double pin hole dectecters during production, can 100% avoid pin hole defects.

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