1. Product Overview
The Pre-Assembled Torsade Aluminum Cable, available in models 335+154.6+116mm², 350+154.6+116mm², and 370+154.6+1*16mm², is a high-performance 1kV overhead power transmission solution. Its "Pre-Assembled Torsade" design refers to the fact that all conductors are twisted into a bundle at the factory, which not only ensures the consistency of the product structure but also greatly simplifies the on-site installation process. As an Overhead Cable, it is specifically designed to meet the needs of power transmission in various environments, including urban, rural, and industrial areas. The cable adopts Aluminum Conductors, which have the advantages of light weight and good conductivity, making the overall weight of the cable relatively light, reducing the load on the overhead poles, and facilitating transportation and installation. The use of XLPE Insulation Material further enhances the performance of the cable, enabling it to work stably in harsh outdoor environments. Whether it is intense sunlight, heavy rain, or extreme temperature changes, this cable can maintain excellent performance, ensuring the safe and reliable operation of the power system. 2. Conductor Configuration
The 335mm², 350mm², and 3*70mm² conductors in the cable are the main power transmission channels, responsible for transmitting three-phase alternating current. These conductors are made of high-purity aluminum, which has excellent electrical conductivity, ensuring minimal power loss during transmission.
The 3*35mm² conductor is suitable for low-load scenarios, such as small residential areas, rural roads, and some small-scale public facilities. It can meet the power demand of daily electricity use in these places, such as lighting, household appliances, etc.
The 3*50mm² conductor is designed for medium-load applications. It is often used in medium-sized residential communities, commercial streets, and small industrial parks. These areas have a higher power demand than low-load areas, involving more electrical equipment and higher power consumption.
The 3*70mm² conductor is aimed at high-load environments, such as large industrial plants, shopping malls, and central business districts. These places have a large number of high-power electrical equipment, such as air conditioners, elevators, and production machinery, requiring a stable and high-capacity power supply.
2.2 Neutral/Grounding Conductor
The 1*54.6mm² conductor serves as both a neutral conductor and a grounding conductor. As a neutral conductor, it plays a role in balancing the three-phase current, ensuring that the voltage of each phase is stable, which is crucial for the normal operation of electrical equipment. If the three-phase current is unbalanced, it may cause the voltage to fluctuate, affecting the service life of the equipment and even causing equipment damage.
As a grounding conductor, it provides a safe path for fault current. When a short circuit or other electrical faults occur, the fault current can be quickly discharged to the ground through this conductor, avoiding electric shock accidents and protecting the safety of personnel and equipment. At the same time, it can also reduce the impact of lightning strikes on the power system, improving the reliability of the power supply.
2.3 Auxiliary Conductor
The 1*16mm² conductor is an auxiliary conductor, mainly used to support various auxiliary functions. It can be used for signal transmission, such as transmitting control signals in smart power grids, enabling remote monitoring and control of the power system. In addition, it can also be used to supply power to street lights, traffic signals, and other small electrical equipment, avoiding the need for additional wiring and reducing the complexity of the power grid.
3. Material Characteristics
The aluminum conductors used in the cable are made of high-purity aluminum with a purity of more than 99.5%. This high-purity aluminum ensures good electrical conductivity, which is only slightly lower than that of copper, but its density is much lower than that of copper, making the cable lighter. This lightweight feature not only reduces the transportation cost but also reduces the load on the overhead poles, extending the service life of the poles.
The conductors are stranded, which is composed of multiple thin Aluminum Wires twisted together. This stranded structure makes the conductor more flexible, easy to bend and install, especially in complex terrain. At the same time, the stranded structure can also improve the mechanical strength of the conductor, making it more resistant to stretching and vibration, and not easy to break. 3.2 XLPE Insulation
The cable uses cross-linked polyethylene (XLPE) as the insulation material, which has excellent performance. Compared with traditional insulation materials such as PVC, XLPE has higher thermal resistance. It can work normally at a temperature of up to 90°C, and can even withstand higher temperatures for a short time in case of overload, ensuring the stability of the power transmission.
XLPE insulation also has good UV resistance. In outdoor overhead environments, the cable is exposed to sunlight for a long time, and the UV rays in the sunlight will aging the insulation material. However, XLPE can resist the damage of UV rays, maintaining its insulation performance for a long time.
In addition, XLPE has strong resistance to moisture and chemicals. It can prevent moisture from penetrating into the conductor, avoiding conductor corrosion. At the same time, it can resist the erosion of various chemicals in the environment, such as industrial waste gas, acid rain, etc., making the cable suitable for various harsh environments.
4. Structural Design
4.1 Pre-Assembled Torsade Design
The most prominent feature of the cable is its pre-assembled torsade design. All conductors are twisted into a bundle in the factory, and the twisting pitch and tightness are strictly controlled to ensure the stability and consistency of the structure. This design has many advantages.
First, it simplifies the on-site installation process. Traditional cables need to be twisted on site, which requires a lot of labor and time, and the quality of twisting is difficult to guarantee. The pre-assembled torsade cable can be directly installed after being transported to the site, greatly reducing the installation time and labor cost.
Second, the pre-assembled design ensures the uniformity of the cable structure. The twisted bundle structure makes the cable have good overall performance, and each conductor is evenly stressed, improving the mechanical strength of the cable.
Third, the torsade design reduces the wind resistance of the cable. In the overhead environment, the cable is affected by wind force. The twisted structure makes the wind flow around the cable more smoothly, reducing the vibration and swing of the cable caused by wind, and improving the stability of the cable.
4.2 Mechanical Strength
The cable has excellent mechanical strength, which is mainly reflected in its tensile strength and bending performance. The stranded structure of the conductors and the twisted bundle design make the cable have good tensile strength, which can bear the weight of the cable itself and the external force such as wind and ice, ensuring that the cable is not easy to break.
In terms of bending performance, the cable can be bent to a certain extent without damaging the insulation and conductors, which is convenient for installation in corners and complex terrain. This Flexibility also makes the cable not easy to crack due to temperature changes, improving the service life of the cable. 5. Performance Characteristics
5.1 Electrical Performance
The cable has excellent electrical performance. The high-purity aluminum conductors and XLPE insulation ensure low power loss during transmission. The 1kV rated voltage meets the requirements of low-voltage power transmission, and it can stably transmit power in various environments.
The insulation resistance of the cable is high, which can effectively prevent current leakage, ensuring the safety of the power system. At the same time, the cable has good short-circuit resistance. When a short circuit occurs, it can withstand a certain short-circuit current for a short time, providing time for the protection device to act, reducing the scope of the fault.
5.2 Thermal Performance
The thermal performance of the cable is mainly reflected in its high-temperature resistance. As mentioned earlier, XLPE insulation can work at a temperature of up to 90°C, and can withstand higher temperatures for a short time. This ensures that the cable will not be damaged due to overheating when the current is overloaded, ensuring the continuous operation of the power system.
In addition, the cable has good heat dissipation performance. The twisted bundle structure increases the surface area of the cable, which is conducive to heat dissipation, reducing the temperature rise of the cable during operation, and improving the safety and reliability of the cable.
5.3 Environmental Adaptability
The cable has strong environmental adaptability. It can work normally in a wide temperature range, from -40°C to 90°C, adapting to various climate conditions, whether it is cold winter or hot summer.
It is also resistant to moisture, UV rays, and chemicals, as mentioned earlier, making it suitable for use in coastal areas, industrial zones, deserts, and other harsh environments. In addition, the cable is not easy to be eroded by microorganisms, ensuring its performance in humid and dark environments.
6. Application Scenarios
6.1 Urban Power Grid
In urban areas, the cable is widely used in the power distribution network. The 350+154.6+116mm² and 370+154.6+116mm² models are often used in residential communities, commercial districts, and industrial parks. They can provide stable power for high-rise buildings, shopping malls, office buildings, and factories, meeting the needs of urban residents and enterprises for electricity.
The auxiliary conductor 1*16mm² can be used for street lighting, traffic signal control, etc., integrating power transmission and auxiliary functions, reducing the number of cables in the urban power grid and making the urban landscape more beautiful.
6.2 Rural Power Grid
In rural areas, the 335+154.6+116mm² and 350+154.6+116mm² models are more suitable. They can be used to connect villages, farms, and rural public facilities, providing electricity for rural residents' daily life and agricultural production.
The lightweight and easy installation characteristics of the cable make it suitable for rural areas with complex terrain. It can be installed on simple poles, reducing the cost of rural electrification. At the same time, its good environmental adaptability ensures stable power supply in rural areas with harsh natural conditions.
6.3 Industrial Applications
In industrial fields, the 370+154.6+1*16mm² model is often used. It can provide power for industrial equipment, such as motors, pumps, and production lines, ensuring the normal operation of industrial production.
The cable's resistance to chemicals and high temperature makes it suitable for use in factories, chemical plants, and other industrial environments. The auxiliary conductor can be used for signal transmission in industrial control systems, enabling intelligent management of the production process.
7. Installation and Maintenance
7.1 Installation
The installation of the pre-assembled torsade aluminum cable is relatively simple. Before installation, it is necessary to check whether the cable is damaged during transportation, and ensure that the installation tools and accessories are complete.
During installation, the cable should be laid smoothly, avoiding excessive bending and twisting. The cable should be fixed on the poles with appropriate clamps, and the tension should be adjusted properly to ensure that the cable is not too loose or too tight.
The connection of the cable should be firm and reliable, and the insulation treatment should be done well to prevent moisture and current leakage. After installation, a test should be carried out to ensure that the cable works normally.
7.2 Maintenance
The maintenance of the cable is relatively simple. Regular inspection should be carried out to check whether the cable has damage, such as insulation cracks, conductor corrosion, etc. For the parts with serious damage, they should be repaired or replaced in time.
The connectors and clamps should also be inspected regularly to ensure that they are firm and not loose. In addition, the surrounding environment of the cable should be kept clean, avoiding the accumulation of debris and vegetation, which may affect the heat dissipation and safety of the cable.
8. SEO and Market Positioning
The Pre-Assembled Torsade Aluminum Cable has obvious advantages in the market. Its key SEO terms, such as "1kV Pre-Assembled Aluminum Torsade Cable", "XLPE Overhead Cable 370+154.6+1*16mm²", and "Torsade Aluminum Power Cable", make it easy to be found by users in search engines. Compared with other similar products, this cable has the characteristics of pre-assembled design, high-quality materials, excellent performance, and wide application range. It can meet the needs of different users, and its cost performance is high, which is favored by users.
In the future, with the development of urbanization and rural electrification, the demand for this cable will continue to increase. It will play an important role in the construction of power grids, contributing to the development of the power industry.
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