Executive Standards: All JKLYJ series overhead cables are strictly designed, manufactured, inspected and accepted in full accordance with national standard specifications GB/T 12527‑2008 and GB/T 14049‑2008. These authoritative national industrial standards define comprehensive technical requirements for overhead insulated cables in terms of material selection, structural design, mechanical performance, electrical parameters, aging resistance, weather resistance, safety indicators and finished product testing. During the entire production process, our company implements standardized process management and full‑range quality monitoring. From raw material incoming inspection, conductor stranding, insulating material extrusion, continuous vulcanization treatment to finished product performance sampling and aging testing, every procedure strictly complies with national standard requirements. By adopting standardized production and rigorous quality control mechanisms, we ensure that each batch of JKLYJ overhead cables features stable structural performance, consistent electrical indicators, reliable safety performance and excellent environmental adaptability, fully meeting the technical access standards for urban and rural power grid transformation, industrial power distribution and outdoor overhead transmission projects.

Product Overview and Application Scope: JKLYJ series overhead insulated cables are classic and widely used power transmission products specially developed for outdoor overhead power distribution systems. This product series covers mainstream voltage levels including 1kV low‑voltage and 10kV medium‑voltage, and is universally applicable to overhead power transmission and distribution systems with a rated voltage range from 1kV up to 35kV. Compared with traditional bare overhead wires, JKLYJ insulated overhead cables adopt advanced polymer insulating protection structure, which effectively solves common problems of bare wires such as easy short‑circuit caused by foreign object contact, line leakage, lightning interference and environmental erosion. The product features excellent insulation performance, outstanding weather resistance, stable electrical conductivity and strong mechanical tensile strength, making it highly suitable for complex outdoor operation environments.

This series of overhead cables is mainly used for outdoor overhead power laying in urban power grids, rural power grid renovation, industrial park power distribution, residential community power supply, road lighting power distribution and temporary engineering power transmission scenarios. It can adapt to various complex environmental conditions such as open-air exposure, wind and rain erosion, ultraviolet radiation and seasonal temperature changes. The reliable insulating layer can effectively prevent line faults caused by tree branch friction, floating foreign objects and cross-line contact, greatly improving the safety and stability of overhead power lines, reducing line failure rate and daily maintenance costs, and improving the overall operational efficiency of power distribution systems.

Technical Service Characteristics and Laying Requirements: The JKLYJ series includes two core voltage specifications, AC 1kV and AC 10kV, covering most conventional low and medium voltage overhead power supply demands in industrial and civil power systems. The product adopts high-quality aluminum alloy conductor with excellent electrical conductivity and mechanical toughness, ensuring stable and low-loss power transmission during long-term continuous operation. The maximum permissible long-term operating temperature of the cable conductor is 90℃. This excellent temperature resistance enables the cable to maintain stable working performance under long-term load operation and conventional high-temperature outdoor environments, avoiding insulation aging, softening failure and power transmission instability caused by continuous high temperature, thus effectively extending the service life of the line.

In response to sudden circuit faults in actual operation, the cable has excellent short-circuit resistance. Under short-circuit working conditions with a maximum duration of no more than 5 seconds, the instantaneous peak temperature of the cable conductor shall not exceed 250℃. This superior short-term high-temperature resistance can effectively resist instantaneous high-temperature impact generated by short-circuit current, prevent insulation breakdown, cable burnout and large-area power supply interruption accidents, greatly enhance the fault tolerance and safety of overhead lines, and provide reliable safety guarantees for regional power grid operation.

In terms of construction and laying adaptability, the minimum ambient temperature for cable laying construction is -20℃. The product is specially optimized for low-temperature resistance formula and structural design, which can adapt to outdoor construction and long-term operation in cold northern regions and low-temperature seasons. It effectively avoids the brittle cracking, insulation hardening and performance degradation of ordinary cables in low-temperature environments, ensuring smooth construction and stable operation of power projects in winter and cold areas. In terms of flexible construction performance, the minimum allowable bending radius of the cable is no less than 20 times the cable outer diameter. The reasonable bending performance enables the cable to adapt to complex overhead laying routes, corner wiring and tension erection construction, facilitating flexible construction operation, improving laying efficiency, and reducing construction difficulty and engineering cost.

Industry Applications and Key Project Support: Benefiting from stable quality, superior performance and strong environmental adaptability, JKLYJ series overhead insulated cables have been widely applied in numerous core industries and national key construction projects. The product provides reliable overhead power transmission and distribution support for metallurgical production bases, electric power grid construction, new energy energy development, chemical industrial parks, urban construction engineering, shipyard supporting facilities and urban transportation infrastructure projects. In metallurgical and chemical industrial areas with severe environmental pollution and complex atmospheric conditions, the product’s excellent corrosion resistance and weather resistance ensure long-term stable line operation. In urban construction and transportation projects, it adapts to dense urban line layout and complex outdoor environmental changes, effectively optimizing urban power grid structure and improving power supply reliability.

In new energy and energy engineering fields, JKLYJ overhead cables are widely used for power matching and grid connection of wind power, photovoltaic power generation and other new energy projects, providing stable power transmission channels for clean energy power generation systems. Whether it is conventional industrial production power supply, civil residential power distribution, municipal engineering construction or national key infrastructure projects, this series of overhead cables can meet high-standard power supply requirements and has become one of the most trusted mainstream products in the field of overhead power transmission and distribution.

Company Strength and Market Service Network: Relying advanced production technology, sophisticated testing equipment and standardized quality management system, our company’s full series of cable products have stable quality, reliable performance and high cost performance, enjoying great popularity and a good market reputation across China. Our products cover all provinces and cities nationwide, and have been widely recognized and adopted by power companies, engineering construction units and industrial manufacturing enterprises.

In order to provide customers with faster and more professional pre-sales consultation, in-sales technical guidance and after-sales maintenance services, we have established a complete localized service network. At present, we have set up standardized professional service offices in core regional key cities including Tangshan, Shanghai, Xi'an, Shandong and Xinjiang. Relying on regional offline service outlets, we can quickly respond to customer project demands, provide targeted product selection schemes, professional construction technical guidance and timely after-sales problem solving support. We fully guarantee the smooth progress of customer engineering projects and the long-term safe and stable operation of power lines, creating maximum value for customers with high-quality products and professional services.