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Aluminum alloy cable Foundation

Information Source:Henan Huadong Cable Co., Ltd Release date:2014-02-10

Aluminum alloy power cable is a AA-8000 series aluminum alloy conductor power cable, new materials with special pressing process and annealing technology invention. Alloy power cables to make up for the lack of previous pure aluminum cable, improving cable conductive properties, bending properties, creep resistance and corrosion resistance of the cable, to ensure continuous stable performance in long time overload and overheat, using AA-8000 series aluminum alloy conductor, can greatly improve the conductivity, aluminum alloy cable high temperature resistance, and solves the pure aluminum conductor electrochemical corrosion, creep problem. The conductivity of aluminum alloy is the most commonly used reference material of copper IACS 61.5%, carrying capacity is 79% better than that of pure copper, aluminum standard. But in the same size, the actual weight of aluminum alloy is approximately 1/3 for copper. According to the calculation, in order to meet the same conductive properties of the same weight, aluminum alloy cable is two times the length of the copper cable. Therefore, the same as the ampacity of aluminum alloy and the weight of the cable is about half of the copper. The use of aluminum alloy instead of copper cable, cable can reduce weight, reduce the installation cost, reduce the abrasion of equipment and cable installation, make the job easier. When satisfying the same electrical performance, the use of aluminum alloy and the weight of the cable is copper core cable, the cross section is 1.1~1.25 times that of conventional copper core cable, prices lower than the traditional 30%~50% copper core cable

Creep resistance

Aluminum alloy conductor alloy materials and annealing process reduces the conductor in the heat and pressure of the "creep" tendency, compared to pure aluminum, creep resistance can be improved by 300%, to avoid the problems caused by cold flow relaxation or creep.

The tensile strength and elongation

Aluminum alloy conductor compared to the pure aluminum conductors, due to the addition of special composition and special processing technology, greatly improved the tensile strength, and elongation rate increases to 30%, the use of more safe and reliable.

The coefficient of thermal expansion

The coefficient of thermal expansion is used to calculate the size change material when the temperature changes. Aluminum alloy thermal expansion coefficient and copper, aluminum connector has been reliably for years for copper and aluminum conductor, most electrical connector and in use today are made of aluminium, which is especially suitable for aluminum alloy. So the conductor and the connector of aluminum alloy expansion and contraction completely consistent.

The connection performance

Electrical manufacturing aluminum alloy connection and connection manufacturing copper conductor stability. Aluminum alloy components has greatly improved the performance of the connection, when the conductor annealing, adding iron to produce creep properties of high strength, even in the long time overload and overheat, also can ensure the stable connection.

Deadweight capacity

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

Anti corrosion performance

Corrosion resistance aluminum edge inherent self when the aluminum surface is in contact with air to form an oxide layer is thin and strong corrosion, the oxide layer especially tolerant of various forms of. And the rare earth elements added to the alloy can improve the corrosion resistance of aluminum alloy, especially the electrochemical corrosion. The characteristics of aluminum to withstand the harsh environment of the conductor which is widely applied in the tray cable, and many industrial components and containers. Corrosion usually generated with different metal in the humid environment of connection, can the corresponding protective measures to prevent corrosion, such as the use of lubricating oil, antioxidant and protective coating. Acidic soil alkaline soil and some types of have more corrosive to aluminum, so aluminum conductor directly buried insulating layer or sheath should be used to prevent corrosion of molding. In sour environments, such as railway tunnel and other similar places, the corrosion resistance of aluminium alloys is much better than that of copper.

Flexibility

Aluminum alloy with good flexural properties, special alloy formula, processing technology, which greatly improved flexibility. Aluminum alloy than copper flexibility high 30%, 40% lower than the copper rebound. Bending radius of cable is 10~20 times of the outer diameter of the general, and aluminum alloy cable bend radius of only 7 times the diameter, easier connection.

Armoured characteristics

Armored cable is used in China, most of the steel armor, low security level, is subjected to external damage, its resilience, easily lead to breakdown, and the weight, the installation cost is very high, and poor corrosion resistance, the service life is not long. We according to the metal chain armored cable USA standards development, is used in aluminum alloy with chain armour, the linkage structure between layer and layer, ensure the cable can withstand strong outside force damage, even if the cable pressure and large impact force, the cable is not easy to breakdown, improves the safety performance. At the same time armored structure so that the cable is isolated from the outside, even in the fire, armor layer improve the flame retardant grade cables, reduces the danger coefficient of fire. Armored structure relative to the steel tape armoured aluminium alloy strip, light weight, convenient installation, free bridge installed, can reduce the cost of installation of 20%~40%. According to different places can choose the outer sheath layer of different, make use of armoured cable is more widely.

Compression properties

Considering from the volume conductivity than copper, aluminum alloy conductor, but we develop not only the material performance improvements, but also to achieve a major breakthrough in the process, we use the compression technology of ultra conventional, the compression coefficient reaches 0.93, and the pressure coefficient profile line can reach 0.95, belong to first in the country. Pressed by the maximum limit, you can make up for deficiencies in aluminum alloy in the bulk conductivity of the stranded conductor wire core, such as solid conductors, significantly reduced wire diameter, increase the conductivity, under the same load flow case than copper conductor conductor 10%.

HUADONG Henan Huadong is a hi-tech, engineering group. We are specialized in the research,development,and production of ABC Cable,Rubber Cable, mv medium voltage power cable,Control/Instrumentation Cable,Mining Cable, Bare Conductor(AAC/AAAC/ACSR/ACS), Huadong Cable Supply the price of 16mm armoured cableat competitive.
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