AAAC conductor power cables possess good mechanical and electrical properties, so they can be widely used in various fields of the national economy, such as disaster ordinary people, high-rise buildings, elevators, large and small supermarkets, shopping malls, subways, airports, railway stations, hospitals, banks, office buildings, hotels, post, and telecommunications building, galleries, libraries, museums, ancient buildings, schools, electricity buildings, public entertainment, tunnels, underground construction, warehouses, etc., can also be used in metallurgy, iron and steel, coke, coal, power plants, power transmission stations, shipbuilding, petroleum, chemical, pharmaceutical, nuclear power, aerospace, military, paper, and other industries, as well as household appliances, automobiles, public transport facilities and so on. AAAC conductor power cable has the following advantages:
1. Creep resistance
Materials and annealing processes AAAC conductor reduces "creeping" tendency conductor under heat and pressure, as opposed to aluminum, creep resistance increased by 300%, to avoid problems caused by the slack caused by the cold flow or creep.
2. Tensile strength and elongation
Compared to AAAC conductor, due to joining the special ingredients and the use of special processing technology, greatly improves the tensile strength and elongation rate increased to 30%, the use more safe and reliable.
3. The thermal expansion coefficient
The thermal expansion coefficient is used to calculate the size of the change in temperature of the material. Coefficient of thermal expansion of copper aluminum equivalent, over the years, has been reliably aluminum connectors for copper and aluminum conductors, and most of the electrical connectors in use today are made of aluminum, which is particularly suitable for aluminum. So exactly the same AAAC conductor connector with the expansion and contraction.
4. Connectivity
Electrical connection with aaac conductor with the connection made with copper as security and stability. Aluminum components greatly improved their connectivity, when the conductor is annealing, add iron to produce high strength creep resistance, even after prolonged overload and overheating, but also to ensure that the connection is stable.
5. Weight-bearing capacity and strong
Aluminum improves the tensile strength of aluminum, an AAAC conductor can support the weight of length 4000 meters, and 2750 meters of copper cable can support. This advantage in large-span buildings (such as sports stadiums) wiring was particularly prominent.
6. Anti-corrosion
A thin solid layer of aluminum oxide with inherent corrosion resistance originated from the formation of the aluminum surface when in contact with air, this oxide layer is particularly tolerant of various forms of corrosion. The alloys of rare earth elements can be added to further improve the corrosion resistance of aluminum alloys, particularly electrochemical corrosion. Aluminum can withstand the harsh environment of the characteristics that it is widely used in the inner conductor of the cable tray, as well as many industrial components and containers.
Corrosion usually associated with a different metal connection in a humid environment is related to the use of appropriate protective measures to prevent the occurrence of corrosion, such as the use of lubricants, antioxidants, and a protective coating. Acid Soils alkaline soils and some types of aluminum have more corrosive, so Buriedaaac conductor insulation should be used to prevent corrosion or molded jacket. In sulfur-containing environments, such as railway tunnels and other similar places, corrosion resistance of aaac conductor can be greatly superior to copper.
7. Flexible
Aluminum has good bending performance, its unique alloy formula, processing technology, and greatly improved flexibility. 30% higher than copper, aluminum flexibility, rebound 40% lower than copper. The bend radius is typically copper 10 to 20 times the outer diameter, while the aaac conductor bend radius of the outer diameter of only 7 times more likely to be connected to the terminal.
8. Armored feature
Commonly used in armored cable, they use a steel tape armored, low-security level, when subjected to external destructive, their resilience is poor, prone to breakdown, and the heavyweight, the installation cost is very high, coupled with poor corrosion resistance, life is not long. And we developed according to the American standard metal chain armored cable, using aluminum tape interlocking armor, chain structure between its layers, to ensure that the cable can withstand strong external destructive, even if the cable suffers greater pressure and impact, the cable nor susceptible to breakdown, improved safety performance.
While the armored structure of the cable from the outside world, even in a fire, the armored improves the level of fire retardant cables, reducing the risk factor of fire. Armored aluminum structure with respect to the steel armor, its lightweight, the laying of convenience, can avoid bridge installation, can be reduced by 20% to 40% of the installation costs. According to the different places you can choose different outer jacket layers, so the armored cable is more versatile.
9. Pressed characteristics
From the viewpoint of a single volume conductivity, aluminum is less than copper, but we have developed not only made from conductive material performance improvements, and in the process have also made a major breakthrough, we use unconventional pressed technology, the squeeze factor 0.93, and pressed shaped line coefficient can reach 0.95, first of its kind in the country.
By squeezing the maximum limit, it can make up for deficiencies in the bulk conductivity of aluminum alloy, so that stranded conductor core as solid conductors in general, significantly lower core diameter, to improve conductivity, in the case of equal ampacity conductor outside diameter only 10% greater than copper.