JKLHYJ Aluminum Alloy XLPE Insulated Overhead Cable | 0.6/1kV 10kV Aerial

The JKLHYJ overhead insulated cable is a power transmission solution specifically engineered for long-term outdoor overhead installation. Compared to traditional JKLYJ all-aluminum overhead cables and ACSR (Aluminum Conductor Steel Reinforced) cables, this product features significant optimizations in structural stability and long-term operational performance. It utilizes a compacted rare-earth aluminum alloy stranded conductor with an extruded cross-linked polyethylene (XLPE) insulation layer; for 8.7/10kV medium-voltage specifications, an optional dual-layer semi-conductive shielding structure is available to ensure stable internal electric field distribution. Manufactured in strict accordance with international electrical standards such as GB/T 14049 and IEC 60502, the product is backed by comprehensive third-party type test reports and certificates of conformity, fully satisfying the technical review requirements of engineering design institutes, power construction firms, utility procurement departments, and bidders for international infrastructure projects. For electrical design engineers, the cable offers quantifiable mechanical, thermal, and electrical parameters that facilitate efficient line load calculations, sag-tension simulations, and installation scheme verification. For procurement managers and project purchasing personnel, the product offers comprehensive advantages regarding total project investment, long-term O&M costs, supply chain stability, and cross-border customs clearance qualifications, making it the preferred model for the construction of global medium- and low-voltage overhead distribution networks.

The conductor features a precisely controlled stranding pitch and rounding process, effectively minimizing thermal elongation and creep deformation under sustained tensile loads. Compared to standard hard-drawn aluminum conductors, this alloy formulation enhances tensile yield strength while maintaining excellent electrical conductivity, thereby mitigating issues—such as excessive sag—that typically arise in long-span overhead lines during prolonged operation. The conductor's superior roundness ensures stable DC resistance at 20°C, providing a reliable foundation for matching current-carrying capacity and calculating line losses during engineering design.

Utilizing co-extruded, integrated semi-conductive shielding technology, this design eliminates air gaps between the conductor and the insulation layer. This ensures a uniform internal electric field distribution and reduces the risk of partial discharge during long-term AC operation—a critical structural feature for extending the service life of medium-voltage overhead lines.

Real-time online monitoring of insulation thickness is implemented during the extrusion process to ensure concentricity and uniform thickness. Modified cross-linked polyethylene (XLPE) material is utilized, offering excellent resistance to high temperatures, ozone, acid rain corrosion, and UV-induced aging; the insulation layer will not suffer dielectric breakdown or surface cracking, even upon intermittent contact with tree branches, foliage, or external foreign objects.

Working in tandem with the inner shielding structure, this layer balances the electric field distribution during cable cutting and termination assembly. It reduces the risk of insulation breakdown caused by electric field distortion at connection points, thereby significantly enhancing construction safety and operational stability for medium-voltage overhead lines.

• Superior mechanical performance regarding low sag and creep resistance.
• The aluminum alloy core limits permanent elongation under long-term tension; in long-span overhead line applications, the tendency for sag increase is significantly lower than that of pure aluminum JKLYJ cables. This characteristic reduces routine maintenance tasks—such as line tension adjustment, tower height adjustment, and sag correction—during operation, thereby significantly lowering annual maintenance costs for power utility departments; it is particularly suitable for long-distance branch distribution lines with widely dispersed inspection points.
• Optimized Economic Efficiency Across the Procurement Lifecycle
• Compared to copper overhead conductors, this product is lighter per unit length, thereby reducing logistics and transportation costs while easing requirements regarding pole structural loads, cross-arm specifications, and procurement budgets for overhead hardware. Its resistivity is lower than that of standard aluminum conductors, effectively minimizing line losses during long-term power transmission; this delivers sustained energy-saving benefits for high-volume distribution networks, striking an optimal balance between initial procurement costs and long-term operational energy consumption.
• Superior Environmental Adaptability
• Featuring a UV- and ozone-resistant cross-linked polyethylene (XLPE) insulation layer, the cable withstands seasonal temperature fluctuations, sandstorms, acid rain, and coastal salt spray. The outer insulation layer prevents short-circuit faults caused by tree branch abrasion or foreign object impact, reducing trip rates in suburban green belts, roadside corridors, and forested areas, thereby enhancing overall power supply reliability.
• Simplified Installation and Shortened Project Timelines
• Unlike underground power cables that require trenching, backfilling, and civil engineering protection works, JKLHYJ (overhead insulated cable) requires only pole erection and overhead stringing operations. This solution involves fewer installation steps, minimizes traffic disruption, and offers a shorter overall delivery cycle, making it ideally suited for municipal renovation and grid upgrade projects with tight schedules.
• Enhanced Public Safety and Compliance with Urban Planning
• The insulated structure eliminates the risk of caused by accidental contact with power lines by pedestrians, vehicles, or construction machinery. Its neat overhead configuration meets urban landscaping and beautification standards, facilitating the approval of line planning and routing permits in city centers and densely populated residential areas.

• National and regional rural power grid upgrades and renovations
• Municipal overhead line retrofitting and distribution network upgrades
• Overhead main power lines for industrial parks, factories, and manufacturing bases
• Power transmission lines for distributed photovoltaic and small-scale wind power plants
• Power distribution for highway facilities, main lines for suburban landscape lighting, and supply lines for remote areas
• Medium- and low-voltage distribution network expansion for new residential developments

Throughout the production process, we strictly implement raw material inspections, real-time dimensional monitoring during extrusion, and spot checks of the electrical and mechanical properties of finished products; furthermore, we maintain a comprehensive traceability system for every production batch. We accommodate third-party inspections prior to shipment and utilize professional packaging to prevent damage from impact, moisture, or crushing during transit. Additionally, dedicated sales and technical personnel oversee the entire process, from production and delivery to after-sales support.