High-Quality Bare Conductor Cables - AAAC: Lightweight, Durable, and Efficient Cable Solutions

• Customization: Available
• Application: Construction, Overhead, Industrial, Power Station
• Voltage: Low and Medium Voltage Cable
• Model NO.: AAAC
• Insulation Material: Bare
• Sheath Material: Bare
• Material Shape: Round Wire
• Wire Core Material: Aluminium
• Certification: ISO, CCC, CE, VDE, UL and Others
• Model: AAAC, Lgj, Tj, Lj, Jklgyj, Lgjk
• Brand: Xingshen
• Transport Package: Wooden Cable Drum
• Specification: 2.5-630MM²
• Trademark: Xingshen
• Origin: China
• HS Code: 8544601200
• Production Capacity: 50000000meter

Product Description

Product Description

I. Overview

 

AAAC all - aluminum alloy conductors are a type of conductor widely used in the field of power transmission. They are mainly made of aluminum alloy materials. Through carefully adjusting the alloy composition, the aim is to combine the excellent conductivity of aluminum with other properties brought by alloy elements, so as to meet different power transmission environments and requirements.

 

II. Material Composition and Characteristics

 

(I) Alloy Elements

 

1. Magnesium (Mg)
   • It is one of the common alloy elements in AAAC. The addition of magnesium can significantly increase the strength of the aluminum alloy. In the alloy, magnesium atoms form a specific lattice structure with aluminum atoms, acting as a strengthening phase. An appropriate amount of magnesium content enables the conductor to withstand greater mechanical tensile forces, which is particularly important for long - distance overhead power transmission lines because the conductor needs to bear various mechanical stresses such as its own weight, wind force, and ice coating.
   • Meanwhile, the addition of magnesium can also improve the corrosion resistance of the aluminum alloy to a certain extent. In some relatively harsh environmental conditions, such as humid or mildly corrosive environments, AAAC conductors containing magnesium can better resist corrosion and extend their service life.
2. Silicon (Si)
   • The role of silicon in AAAC is mainly reflected in improving the casting performance and heat - treatment performance of the aluminum alloy. During the manufacturing process, silicon helps to refine the grain structure, making the alloy form more uniform and fine grains during solidification, thereby increasing the overall strength and toughness of the material.
   • From the perspective of electrical performance, an appropriate amount of silicon content has a relatively small impact on the conductivity of the aluminum alloy, but it can significantly enhance its mechanical properties, which helps to improve the conductor's tolerance to various mechanical stresses while ensuring good electrical conductivity.
3. Iron (Fe)
   • The content of iron in AAAC usually needs to be strictly controlled. Although a small amount of iron can increase the strength of the aluminum alloy to a certain extent, if the iron content is too high, coarse intermetallic compound phases will be formed, and these phases may become obstacles to current conduction, reducing the conductivity of the conductor. Therefore, in the alloy design of AAAC, it is necessary to balance the iron content to obtain the best combination of mechanical and electrical properties.

 

(II) Material Characteristics

 

1. High Strength
   • Compared with pure aluminum conductors, one of the main advantages of AAAC is its higher strength. Through alloying, its tensile strength is significantly increased, and it can withstand greater tension. For example, in large - span overhead power transmission lines, such as when crossing rivers and valleys, AAAC conductors can safely transmit electrical energy without increasing the number of support towers too much, reducing construction costs and environmental impacts.
2. Good Conductivity
   • Despite the addition of alloy elements, AAAC still maintains relatively good conductivity. Aluminum itself is an excellent conductive material, and during the alloying process, by rationally controlling the types and contents of alloy elements, it is ensured that the impact on conductivity is minimized while improving mechanical properties. Its conductivity rate can usually meet the requirements of most power transmission applications and performs well in medium - and low - voltage power transmission lines.
3. Corrosion Resistance
   • AAAC has a certain degree of corrosion resistance. The addition of alloy elements changes the surface properties of the aluminum alloy, making it have better corrosion resistance than pure aluminum in some common corrosion environments (such as atmospheric corrosion, mildly chemically corrosive environments). In coastal areas or regions with relatively serious industrial pollution, AAAC conductors can better resist the erosion of corrosive substances such as salt fog and acid rain, reducing line maintenance costs and improving operation reliability.

 

III. Manufacturing Processes

 

1. Melting
   • High - purity aluminum ingots are placed in a furnace together with precisely proportioned alloy elements (such as magnesium, silicon, iron, etc.) for melting. During the melting process, parameters such as temperature, time, and stirring need to be strictly controlled to ensure that the alloy elements are fully and evenly dissolved in the aluminum liquid, forming a uniformly - composed alloy melt.
2. Casting
   • The alloy melt after melting is poured into specific molds for casting to form blanks of various shapes, such as round ingots. The casting process also requires precise control of conditions such as temperature and cooling rate to obtain a good internal structure, laying the foundation for subsequent processing procedures.
3. Rolling
   • The blanks after casting are processed through multiple rolling processes to form conductors with certain size specifications. During the rolling process, by gradually reducing the thickness of the blanks and increasing their length, the grain of the aluminum alloy material is further refined, improving the strength and toughness of the material. At the same time, the rolling process also needs to ensure the dimensional accuracy and surface quality of the conductor to meet the requirements of power transmission.
4. Stranding (for multi - strand conductors)
   • If the AAAC conductor is composed of multiple single - strand wires stranded together (this is a common structural form), a stranding process is required. When stranding, multiple single - strand wires are tightly stranded together according to a certain stranding rule to form a conductor as a whole with certain flexibility and mechanical strength. Parameters such as the tightness of stranding and the stranding direction will affect the performance of the conductor, such as flexibility, tensile strength, and conductivity.

 

IV. Electrical Properties

 

(I) Conductivity

 

1. Value Range
   • The conductivity of AAAC is usually between 52.5% - 61% IACS (International Annealed Copper Standard). Although it is lower than the conductivity of copper (100% IACS), due to its comprehensive performance advantages, it is still a widely - used conductor material in practical power transmission applications.
2. Influencing Factors
   • The types and contents of alloy elements are the main factors affecting the conductivity of AAAC. As mentioned above, an excessive iron element content will reduce the conductivity, and by rationally controlling the contents of elements such as magnesium and silicon, the impact on conductivity can be controlled within an acceptable range while improving mechanical properties. In addition, impurity control in the manufacturing process, heat - treatment state, etc. will also have a certain impact on the conductivity.

 

(II) Current - Carrying Capacity

 

1. Definition and Calculation
   • The current - carrying capacity refers to the maximum current that a conductor can continuously carry under specified conditions without causing its temperature to exceed the specified value. For AAAC conductors, the calculation of the current - carrying capacity needs to consider multiple factors, including the material of the conductor, cross - sectional area, ambient temperature, heat dissipation conditions, etc.
   • Generally speaking, according to the principle of thermal equilibrium, the current - carrying capacity is related to the heat dissipation ability of the conductor and the allowable temperature rise value. When a current passes through the conductor, heat will be generated due to the existence of resistance, and the conductor will dissipate heat to the surrounding environment. In a stable state, the generated heat is equal to the dissipated heat, and thus the current - carrying capacity under specific conditions can be calculated.
2. Comparison with Other Conductors
   • Compared with pure aluminum conductors, due to its higher strength, AAAC can adopt a smaller safety factor, so it may have a slightly higher current - carrying capacity under the same cross - sectional area. However, compared with copper conductors, due to its lower conductivity, its current - carrying capacity is relatively smaller under the same cross - sectional area. Nevertheless, the advantage of AAAC lies in its cost - effectiveness and comprehensive performance in specific environments. In many medium - and low - voltage power transmission lines, by reasonable design (such as appropriately increasing the cross - sectional area), the current - carrying capacity requirements for power transmission can be met.

 

V. Mechanical Properties

 

(I) Tensile Strength

 

1. Value Range
   • The tensile strength of AAAC is generally between 160 - 380 MPa, and the specific value depends on the alloy composition and manufacturing process. This range of tensile strength enables AAAC conductors to withstand relatively large tensile forces and is suitable for use in overhead power transmission lines.
2. Significance in Application
   • In overhead power transmission lines, the conductor needs to bear various mechanical loads such as its own gravity, wind force, and ice coating. The relatively high tensile strength of AAAC can ensure that the line will not break due to excessive tensile force under normal operation and extreme weather conditions (such as strong winds, heavy snowstorms, etc.), ensuring the continuity and stability of power transmission.

 

(II) Flexibility

 

1. Relationship with Structure and Manufacturing Process
   • The flexibility of AAAC is closely related to its structure (such as the diameter of single strands, stranding methods, etc.) and manufacturing process. A thinner diameter of single strands and a reasonable stranding method can improve the flexibility of the conductor. During the manufacturing process, by controlling the parameters of rolling and stranding processes, AAAC conductors can be made to have better bending performance.
2. Role in Installation and Operation
   • During the installation of power transmission lines, good flexibility is helpful for the laying of the conductor. For example, during the wiring between towers, it can easily bypass obstacles. During operation, flexibility also helps the conductor to swing and deform under the action of external forces such as wind, reducing the risk of damage caused by stress concentration.

 

VI. Application Areas

 

1. Overhead Power Transmission Lines
   • AAAC is one of the commonly - used conductor materials in overhead power transmission lines. In medium - and low - voltage (such as 10 kV - 35 kV) overhead power transmission lines, due to its good comprehensive performance (high strength, relatively good conductivity, and corrosion resistance), AAAC can effectively replace pure aluminum conductors, reducing line construction costs and improving line reliability.
   • In some special overhead power transmission scenarios, such as mountainous areas and coastal areas, the high - strength and corrosion - resistance advantages of AAAC are more obvious. In mountainous areas, because the lines need to cross complex terrains, AAAC can withstand greater tensile forces, reducing the number of tower constructions; in coastal areas, its corrosion resistance can ensure the long - term stable operation of the lines in a salt - fog environment.
2. Rural and Suburban Power Grid Construction
   • In rural and suburban power grid construction, AAAC has a cost - effectiveness advantage. Since its performance can meet the power transmission requirements in these areas and it is relatively low - cost compared with copper conductors, it is widely used in the construction of 10 kV and below distribution lines in rural and suburban areas. At the same time, its relatively good corrosion resistance is also suitable for the relatively complex environmental conditions that may exist in these areas.
3. Temporary Power Supply Lines
   • For some temporary power supply lines, such as construction sites and temporary activity venues, AAAC conductors are an ideal choice due to their low cost and convenient installation (good flexibility). It can quickly set up temporary power transmission lines to meet temporary power consumption requirements, and can be conveniently removed after use.

Our Advantages

 

Before producing cables and wires, we will test and calibrate each piece of equipment until it can perfectly and accurately produce cables and wires that meet standards.

 

High-quality raw materials are a prerequisite for cables and wires to meet standards. All copper materials in our factory use oxygen-free copper rods with a purity of 99.99%.

 

Not only for copper materials, but also for insulating materials, sheath materials, and other polymer materials as well as auxiliary materials such as armor tapes, fillers, and copper tapes, we strictly screen. Even to ensure the supply of raw materials, we have established our own auxiliary material production plants (for example, polymer particles). Moreover, we record the source of each batch of cable raw materials and conduct retained sample test .

 

Carefully refine every step. Triple inspections, including self-inspection on the production line, random sampling inspection for cost control, and routine inspection by batch, ensure product quality.

 

Not only do we have cables and wires. We are a group company. Under the company, there is a power design institute, a power installation company, a production plant for power distribution boxes and cabinets, a production plant for cable trays and cable accessories, and a production plant for cable conduits. We can provide integrated services from design and research to products and then to construction. If you have any power-related issues, we welcome you to discuss with us. We will do our best to provide a solution. And these services are permanently free of charge!!!

FAQ

 

1. What is an overhead cable?
An overhead cable is a cable that is erected on supports such as poles and towers and is used for transmitting power, information, and so on.

 

2. What types of overhead cables exist?
According to the material, there are overhead cables with conductor materials like aluminum strand, aluminum conductor steel reinforced, and aluminum alloy strand. Based on the insulation type, there are ordinary overhead insulated cables and cross-linked polyethylene insulated overhead cables.

 

3. For which scenarios are overhead cables suitable?
They are widely used in power transmission and distribution in urban and rural areas as well as in communication line erection and other scenarios. For instance, in rural power grid renovation and on both sides of urban streets for power and communication line laying.

 

4. Compared to underground cables, what advantages do overhead cables have?
The installation cost is relatively low as there is no need for extensive underground excavation work. Maintenance and repair are convenient as workers can operate directly on the overhead line. Additionally, the heat dissipation condition is good, which is beneficial for the stable operation of the cable.

 

5. What precautions should be taken when installing overhead cables?
During installation, ensure the stability of poles or towers. The erection height of the cable should comply with safety standards. The sag (i.e., the degree of sagging of the cable between two support points) of the cable should be controlled within a reasonable range to avoid affecting the normal use of the cable due to excessive or insufficient sag. When crossing special sections such as roads and rivers, corresponding protective measures should be taken.

 

6. How can one choose the appropriate overhead cable?
Select according to factors such as the voltage level, current magnitude, and environmental conditions of the usage scenario. For example, in strong wind areas, choose cables with strong wind resistance. In high-temperature environments, select cables with high temperature resistance.

 

7. What is the service life of an overhead cable?
Generally speaking, under normal use and maintenance, the service life of an overhead cable can reach more than 20 years. However, the specific life will also be affected by various factors such as cable quality, environmental factors, and usage frequency.

 

8. How is daily maintenance of overhead cables performed?
Regularly inspect the cable to check whether its appearance is damaged or deformed. Check whether the connection parts of the cable are firm and if there are phenomena such as loosening and heating. Clean the dust and debris on the cable to avoid affecting its heat dissipation and insulation performance.

 

9. What faults may occur in overhead cables?
Common faults include cable breakage, which may be caused by external forces or overload. Cable insulation damage may be due to long-term exposure to the external environment and being eroded by ultraviolet rays, rain, etc., or the aging of the insulation material inside the cable. Cable joint faults, such as loose joints and heating, may be problems that occur due to improper installation or long-term use.

 

10. When a fault occurs in an overhead cable, how is rapid repair carried out?
First, determine the location and type of the fault. Then, take corresponding repair measures according to the specific situation. For example, for a broken cable, the cable needs to be reconnected. For insulation damage faults, the damaged cable section needs to be replaced or insulation repair needs to be carried out. During the repair process, ensure the safety of workers and strictly abide by relevant safety operation procedures.