Aluminum alloy cable

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Power cable with aluminium alloy is to AA8000 series aluminum alloy materials for the conductor, the special type of roll forming litz wire production process and annealing treatment of advanced technology invention and creation of new materials of power cable. Alloy power cables to make up for the lack of previous pure aluminum cable, although there was no improvement in the electrical properties of the cable, but the bending properties, creep resistance and corrosion resistance etc. has increased greatly, can guarantee the cable in the long time overload and overheat keep continuous and stable performance, the AA-8030 series aluminum alloy conductor, can greatly improve the conductivity of aluminum alloy cable, high temperature resistance, and it can solve the problem of pure aluminum conductor electrochemical corrosion and creep. The conductivity of aluminum alloy is the most commonly used reference material of copper IACS 61.8%, the flow rate of copper is 79%, better than the pure aluminum standard. But in the same volume, the actual weight of the aluminum alloy is about 1/3 of that of copper. Therefore, the same load flow Aluminum Alloy cable weight is about half of the copper. Using aluminum alloy cables instead of copper, can reduce the weight of the cable, reduce installation costs, reduce equipment and cable wear, the installation work more easily.

Aluminum alloy cable is a new type of electric power cable, which is made of AA8000 series aluminum alloy material, which is made by special pressing technology and annealing treatment.

Aluminum alloy cable in electrical aluminum adding copper, iron, magnesium, silicon, zinc, boron, and alloy elements, also by adjusting the process, making the mechanical properties of aluminum alloy conductor greatly improved, avoid the elongation of pure aluminum conductor and low creep resistance poor, poor flexibility, increase the connection reliability of cable system. In addition, to maintain the electrical properties of aluminum alloy and electrical aluminum conductor flat, in the above 61%IACS.

Aluminum alloy electric conductor DC resistance evaluation index can be reference GB/T3956-2008 the cable conductor, solid conductor or a stranded conductor DC resistance value, and in GB/T3954-2014 the aluminum electrical round bar "has been aa8030 and other types of rod.

Alloy power cables to make up for the lack of previous pure aluminum cable, although there was no improvement in the electrical properties of the cable, but the bending properties, creep resistance and corrosion resistance etc. has increased greatly, can guarantee the cable in the long time overload and overheat keep continuous and stable performance, the AA-8030 series aluminum alloy conductor, can greatly improve the conductivity of aluminum alloy cable, high temperature resistance, and it can solve the problem of pure aluminum conductor electrochemical corrosion and creep.

Electric conductivity

The conductivity of aluminum alloy is the most commonly used reference material of copper IACS 61.8%, the flow rate of copper is 79%, better than the pure aluminum standard. But in the same volume, the actual weight of the aluminum alloy is about 1/3 of that of copper. Therefore, the same load flow Aluminum Alloy cable weight is about half of the copper. Using aluminum alloy cables instead of copper, can reduce the weight of the cable, reduce installation costs, reduce equipment and cable wear, the installation work more easily.

weight

In the premise of meeting the same electrical performance, the weight of the aluminum alloy cable is half of the copper core cable, the section is 1.1~1.25 times the traditional copper core cable, the price is lower than the traditional copper core cable 15~30%.

Aluminum Alloy power cable has good mechanical properties and electrical properties, so it can be widely used in various fields of national economy, such as ordinary houses, high-rise buildings, elevator, subway, shopping malls, supermarkets and small airports, stations, hospitals, banks, office buildings, Gaestgiveriet Hotel, postal and telecommunications building, exhibition hall, library and the museum, the ancient buildings, schools, public places of entertainment, power building, tunnel, underground building, warehouse etc., can also be used in metallurgy, steel, coke, coal, power plant, substation, shipbuilding, petroleum, chemical, pharmaceutical, nuclear power, aerospace, military, papermaking and other industries, as well as home appliances, automotive public transport facilities, etc..

Creep resistance

Alloy materials and annealing process of aluminum alloy conductor reduced conductor under heat and pressure "creep" tendency, relative to pure Al and creep resistance can be increased by 300% to avoid due to cold flow or caused by creep relaxation of the problem.

Tensile strength and elongation

Aluminum alloy conductor compared to pure aluminum conductor, due to joined the special ingredients and the use of special process, greatly improves the tensile strength and elongation is increased to 30%, flexibility is greater than that of copper by 33%, 40% of low elasticity using more safe and reliable.

Coefficient of thermal expansion

The coefficient of thermal expansion is used to calculate the change of the size of the material when the temperature changes. The coefficient of thermal expansion of aluminum alloy is equal to that of copper. For many years, aluminum connectors have been used for copper and aluminum conductors, and most of the electrical connectors used today are made of aluminum, which is especially suitable for aluminum alloy. So the expansion and contraction of the aluminum alloy conductor is exactly the same as that of the connector.

Connection performance

With the electrical manufacturing Aluminum Alloy connection and connected with the safety and stability of manufacturing copper conductor. Aluminum Alloy composition greatly improved the connection performance, when the conductor during annealing, adding iron anti creep properties of high strength, even in a long time overload and overheat, also can ensure the stable connection.

Deadweight capacity

Aluminum Alloy improved the tensile strength of pure aluminum, the weight of Aluminum Alloy can support the cable length of 4000 meters, only 2750 meters of copper cable support. This advantage in large span buildings (such as stadiums) wiring was particularly outstanding.

Anti corrosion performance

Anti-corrosion aluminum energy inherent self when aluminum surface in contact with air to form a thin oxide layer and strong corrosion, the oxide layer forms the special tolerance. Rare earth elements added in the alloy and can further improve Aluminum Alloy corrosion resistance, especially electrochemical corrosion. The characteristics of aluminum can withstand the harsh environment of the conductor which is widely used in cable tray, and many industrial components and containers. Corrosion usually generated with different metal in the humid environment of the connection, can use the corresponding protective measures to prevent the occurrence of corrosion, such as the use of lubricating oil, antioxidant and protective coating. Acid, alkaline soil and some types of soil of aluminum is more corrosive, so buried aluminum conductor should use insulating layer or sheath molded to prevent corrosion. In sour environments, such as railway tunnel and other similar places, corrosion resistance Aluminum Alloy is much better than that of copper.

flexibility

Aluminum Alloy have good flexural properties, its unique alloy composition and processing, so that a substantial increase in flexibility. Aluminum Alloy high flexibility than copper 30%, 40% lower than copper rebound. General cable bending radius is 10 to 20 times the outer diameter of the, and aluminum alloy cable bending radius of only 7 times the diameter, easier to terminal connection.

Armored characteristics

Armored cable commonly used in China, mostly by steel tape armored, low level of security, when subjected to external destructive defend ability is poor, easily lead to breakdown, and weight, installation cost is very high, coupled with the resistance corrosion performance, service life is not long. We according to the development of American Standard metal chain armored cable, the is aluminum alloy with chain armour, its chain structure between the layers to ensure cable can withstand external strong destructive power, even cable is subjected to the bigger pressure and impact force, cable, also not easy breakdown and improve the safety performance. While the armored structure cable, isolated from the outside world, even in case of fire, armor layer improves the cable flame retardant level, reducing the fire danger coefficient. Aluminum alloy with armored structure relative to the steel tape armoured, the weight light, convenient installation, can be exempted from the tray installation, reduce 20% to 40% of the installation costs. According to different places of the outer sheath can choose different, make use of the armored cable more widely.

Tight pressure characteristics

Considering only the volume conductivity, aluminum alloy than copper, but we develop the conductor not only from the aspect of material properties make improvements, and in the process has also made a major breakthrough, we adopt ultra conventional compression technology, the compact pressure coefficient reached 0.93, and special wire tight pressure coefficient can reach 0.95, in domestic is the first. By the maximum limit of pressed, can make up for the defects in the bulk conductivity of aluminum alloy, the stranded conductor wire core as well as solid conductors and significantly reduce the outer diameter of the line core, to increase the conductivity. Under the same loading flow conductor outside diameter is only 10% of copper.