Shandong Jinyu Cable Co., Ltd.
Shandong Jinyu Cable Co., Ltd.
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JKLYJ Overhead Insulated Cable (10KV Overhead Wire with Aluminum Core)
General Description
JKLYJ overhead insulated cable is a type of cable specifically designed for overhead power transmission applications, especially for 10KV power distribution systems. It features an aluminum core, which offers several advantages in terms of cost - effectiveness, electrical performance, and suitability for overhead installations.
Aluminum Core
Material Properties: The aluminum core is made of high - quality aluminum alloy. Aluminum has good electrical conductivity, allowing for efficient transmission of electrical current. Although its conductivity is slightly lower than that of copper, its lower density and cost make it an attractive option for overhead power lines. The alloy used in the core is carefully selected to enhance its mechanical strength and resistance to corrosion.
Core Structure: The core is usually solid or stranded depending on the specific design requirements. Stranded cores provide better flexibility, which is beneficial during installation and when the cable is subjected to wind and other mechanical forces. The diameter and number of strands are designed to meet the electrical load - carrying requirements of 10KV power transmission.
Insulation Layer
Insulation Material: The cable is equipped with an effective insulation layer. Commonly used insulation materials include cross - linked polyethylene (XLPE). XLPE has excellent electrical insulation properties, high dielectric strength, and good resistance to environmental factors such as moisture, heat, and ultraviolet radiation. This ensures that the cable can maintain its insulation performance under various outdoor conditions.
Insulation Thickness and Quality: The thickness of the insulation layer is precisely determined to meet the 10KV voltage level requirements. It provides sufficient insulation to prevent electrical leakage and short - circuits between the conductors and the surrounding environment. The manufacturing process of the insulation layer ensures its uniformity and integrity, minimizing the risk of defects that could affect the cable's performance.
Performance Characteristics
Electrical Performance: The JKLYJ cable is designed to efficiently transmit 10KV electrical power. It has low electrical resistance in the aluminum core, reducing power losses during transmission. The insulation layer effectively isolates the electrical current within the core, maintaining a stable voltage during operation. The cable can also withstand short - term overvoltage conditions that may occur in the power distribution network.
Mechanical Performance: In terms of mechanical strength, the cable can endure the mechanical stresses caused by its own weight, wind loads, ice loading, and other environmental factors. The combination of the aluminum core's strength and the flexibility of the cable structure allows it to be safely installed and maintained on overhead poles or towers. It has good tensile strength and can resist bending and twisting without significant damage to the cable structure or performance.
Weather Resistance: The cable is highly resistant to various weather conditions. It can withstand exposure to sunlight, rain, snow, and temperature variations throughout the year. The insulation layer and the protective sheath (if applicable) prevent moisture ingress and degradation of the cable materials due to environmental exposure.
Installation and Maintenance Advantages
Installation: The JKLYJ overhead insulated cable is relatively easy to install. Its lightweight nature compared to some other types of cables makes it more manageable during the installation process. The flexibility of the cable allows for easier routing along the overhead support structures. Installation techniques such as stringing and tensioning can be efficiently carried out, reducing the installation time and labor costs.
Maintenance: During its service life, the cable requires relatively low maintenance. The insulation layer's durability and resistance to environmental factors mean that there is less risk of insulation breakdown or other performance - degrading issues. Routine inspections can focus on checking the cable's physical condition, such as looking for signs of damage to the insulation or core, and ensuring proper tension and alignment on the overhead supports. If any issues are detected, repair or replacement of sections of the cable can be carried out with relative ease.
Applications
JKLYJ overhead insulated cable is widely used in 10KV power distribution networks in urban and rural areas. It is suitable for connecting power substations to distribution transformers, as well as for power supply to residential, commercial, and industrial areas. The cable's ability to provide reliable power transmission in overhead environments makes it an important component in the power infrastructure for lighting, electrical equipment operation, and overall power distribution within a community.
10KV Overhead Cable
10KV overhead cables are essential components in power transmission and distribution systems, designed to efficiently and safely carry electrical energy at a voltage level of 10 kilovolts. These cables are engineered to meet the demanding requirements of overhead installation environments, providing reliable power supply for various applications.
Cable Structure
Conductor: The conductor of the 10KV overhead cable is usually made of high - quality aluminum or copper. Aluminum conductors are popular due to their good conductivity, lightweight, and cost - effectiveness. Copper conductors, on the other hand, offer higher conductivity but are relatively more expensive. The conductor is designed with an appropriate cross - sectional area to handle the current - carrying capacity required for 10KV power transmission. It may be solid or stranded, with stranded conductors providing better flexibility during installation and operation.
Insulation Layer: A crucial part of the cable is the insulation layer. High - quality insulation materials such as cross - linked polyethylene (XLPE) are commonly used. XLPE insulation offers excellent dielectric properties, high breakdown voltage strength, and good resistance to environmental factors like moisture, heat, and ultraviolet radiation. This layer effectively isolates the conductor from the outside environment, preventing electrical leakage and ensuring the safety of the power transmission.
Sheath (if applicable): Some 10KV overhead cables may have an outer sheath. The sheath is typically made of materials with good weather resistance and mechanical protection properties. It further safeguards the cable from physical damage, such as abrasion from external objects, and provides additional protection against environmental elements.
Performance Characteristics
Electrical Performance: The 10KV overhead cable demonstrates outstanding electrical performance. It has low resistance in the conductor, minimizing power losses during transmission. The insulation layer maintains high insulation resistance under normal operating conditions and can withstand the rated 10KV voltage without breakdown. Additionally, the cable has good capacitance and inductance characteristics, which are carefully considered during the design to ensure stable power transmission and compatibility with the power grid.
Mechanical Performance: These cables are designed to endure significant mechanical stresses. They can withstand the tension caused by their own weight when suspended between poles, as well as additional loads from wind, ice, and other environmental factors. The cable's structure and materials provide sufficient tensile strength and flexibility to prevent breakage or deformation under these mechanical forces. This mechanical durability ensures the long - term reliability of the cable in overhead installations.
Weather Resistance: 10KV overhead cables are highly resistant to various weather conditions. They can operate effectively in extreme temperatures, ranging from cold winters to hot summers. The insulation and sheath materials are formulated to resist degradation from sunlight, rain, snow, and humidity. This weather resistance property allows the cable to maintain its performance over an extended period, reducing the need for frequent maintenance and replacement.
Installation and Maintenance
Installation: The installation of 10KV overhead cables is a well - defined process. The lightweight nature of the cable (especially those with aluminum conductors) makes it relatively easy to handle during stringing operations. Specialized installation equipment and techniques are used to ensure proper tensioning and alignment of the cable along the overhead support structures. The flexibility of the cable allows for smooth installation around corners and over obstacles.
Maintenance: Maintenance of 10KV overhead cables mainly involves regular inspections. These inspections check for signs of physical damage to the cable, such as cuts, abrasions, or signs of insulation degradation. Monitoring the cable's tension and position on the support poles is also important to prevent sagging or excessive stress. In case of any detected issues, timely repair or replacement of damaged sections can be carried out to maintain the integrity of the power transmission system.
Applications
10KV overhead cables are widely used in power distribution networks. They are commonly employed to connect substations to distribution transformers, supplying power to residential areas, commercial complexes, and industrial facilities. Their ability to provide reliable power transmission over long distances in overhead environments makes them an integral part of the electrical infrastructure, enabling the efficient operation of lighting systems, electrical appliances, and industrial equipment.
Advantages of overhead cables
High cost-effectiveness
Low initial construction cost: Compared with underground cables, overhead cables do not require complex excavation and underground pipeline laying. For example, in suburban areas or rural areas, laying underground cables requires digging a large number of trenches to place cables, and building facilities such as cable wells, which involves many costs such as land excavation, pipeline purchase, and backfilling. Overhead cables are mainly erected through poles or towers, and their installation process is relatively simple, with relatively low material and labor costs.
Relatively low maintenance and repair costs: Overhead cables are easier to locate and repair when they fail. Maintenance personnel can quickly find the damaged location of the cable through visual inspection, such as broken wires and damaged insulation. And because overhead cables are in an open-air environment, maintenance does not require large-scale excavation work like underground cables, thus saving maintenance costs.
Easy installation
Fast installation: The installation of overhead cables does not require complex underground construction. In open areas, construction teams can use equipment such as cranes to quickly erect cables on poles. Taking the newly built power supply line of the industrial park as an example, the overhead cable can be installed in a relatively short time, quickly providing power support for the park, greatly shortening the construction period.
High flexibility: Overhead cables can easily adjust and expand the line. If you need to add a new branch line or change the line direction, it is relatively easy to operate. For example, in a developing town, with the construction of new residential or commercial areas, overhead cables can be flexibly extended and adjusted to meet the increased power demand.
Good heat dissipation performance
Overhead cables are directly exposed to the air, and heat can be dissipated quickly. Air is a good heat dissipation medium, and the heat generated by the cable during operation can be dissipated to the surrounding air by natural convection. This allows overhead cables to withstand relatively high current loads, and has obvious advantages in heat dissipation compared to underground cables of the same specifications. For example, in a high temperature environment, the heat dissipation performance of overhead cables helps maintain their normal electrical performance and reduce the risk of failure due to overheating.
Easy to inspect and maintain
Since overhead cables are located above the ground, inspectors can conduct regular inspections using tools such as telescopes or patrol vehicles. The appearance of the cable can be visually observed, such as whether there are branches touching it, birds building nests, aging of the insulation layer, etc. In addition, during the maintenance process, operations such as cleaning debris on the cable surface and replacing insulators are relatively convenient. For example, the inspection personnel of the power company can regularly inspect along the overhead cable line to promptly discover and deal with potential safety hazards.