JKYJ and JKLYJ overhead insulated cables are designed specifically for outdoor overhead power distribution systems and are widely used in urban overhead power distribution, rural power grid upgrades, and overhead transmission lines in industrial parks.
Unlike traditional bare overhead wires, JKYJ and JKLYJ cables feature a durable outer insulation layer, effectively preventing electric shock, short circuits, and faults caused by contact with branches, buildings, or accidental human contact. This product series includes two main types: JKYJ copper core overhead insulated cables and JKLYJ aluminum core overhead insulated cables. Both offer advantages such as low total cost of ownership, lightweight construction, and easy on-site installation, making them the preferred choice for electrical engineers, building contractors, and power distributors worldwide.
JKYJ/JKLYJ uses highly weather-resistant XLPE insulation material, possessing excellent resistance to ultraviolet radiation, aging, and atmospheric corrosion, making it suitable for long-term outdoor exposure.
The integrated insulation layer eliminates most of the hazards of bare wires, improving line safety and reducing circuit failure rates in densely populated urban and rural areas.
No complex cable trench excavation or underground pipeline laying is required. Overhead installation significantly shortens the construction period and reduces civil engineering investment.
Resistant to high temperatures, cold temperatures, rain erosion, and sea salt spray, suitable for complex outdoor operating environments worldwide.
- Urban residential areas, street overhead power distribution, and old city power grid renovation
- Rural power grid upgrades, rural overhead transmission, and power supply to remote mountainous areas
- Overhead power lines for industrial parks, factories, and logistics parks
- Urban public facilities, road lighting, and community power distribution networks
- Areas with complex geology, high excavation costs, or dense buildings where underground burial is difficult
- Temporary power supply projects, and overhead power distribution projects in scenic areas and suburbs
- Conventional Pole Erection
Using insulators, lifting clamps, and tensioning devices, cables are installed on concrete and steel poles; this is the standard and most widely used laying method. - Overhead Crossing Arrangement
When crossing roads, rivers, and farmland, appropriate pole height and safe distances must be maintained; long spans are secured with steel reinforcement. - Laying Near Buildings and Trees
Due to its insulated design, cables can be laid close to buildings and trees, minimizing the risk of short circuits or leakage. - Trenchless Overhead Arrangement
Suitable for areas with strict excavation restrictions, enabling rapid power deployment while protecting existing roads and landscapes.
- Safety Clearance Control
Maintain standard vertical and horizontal safety distances between cables, buildings, trees, roads, and overhead lines; strictly adhere to power distribution design specifications. - Appropriate Tension and Sag Adjustment
Control appropriate tension and line sag during installation. Excessive tension will damage the conductors; excessive sag will cause the line to sway and collide in strong winds. - Insulation Protection
Avoid scratching, squeezing, or cutting the insulation layer during transportation, handling, and erection. Damage to the insulation layer can lead to leakage and potential safety hazards. - Use matching professional accessories
Dedicated overhead insulated cable clamps, piercing connectors, and insulation accessories must be used; never use ordinary bare wire accessories to avoid poor contact and insulation damage. - Prohibit construction in severe weather
Stop installation work during heavy rain, thunderstorms, strong winds, and extremely low temperatures to ensure construction safety and installation quality. - Standard branch connection
Line branches use insulated piercing connectors; keep the connection points sealed and insulated to prevent water ingress, oxidation, and overheating failure. - Lightning protection grounding devices
Installing appropriate pole and tower grounding and lightning protection devices in areas prone to thunderstorms, mountainous regions, and coastal areas can improve the operational safety of the entire line.
- Lower line failure rates and fewer maintenance cycles reduce long-term operating costs.
- Flexible selection of copper and aluminum cores balances power quality and project budget.
- Simplified construction processes shorten project cycles and reduce civil engineering costs.
- Insulation design enhances public safety and prevents accidental electric shocks.
- Complies with global urbanization and rural power grid upgrade standards.
JKYJ copper core and JKLYJ aluminum core overhead insulated cables are ideal solutions for modern urban overhead power distribution, rural power grid upgrades, and industrial park overhead lines. With reliable impact-resistant insulation, flexible conductor selection, low cost, and convenient installation, they fully meet the professional needs of engineers, contractors, and power distributors. Standardized installation and strict installation specifications ensure the long-term safe, stable, and low-loss operation of the entire overhead power distribution network.
