Wires and Cables
Overhead Insulated Cable
Enhance aerial power distribution with robust Overhead Insulated Cables. Designed for safety and reliability in overhead line applications, these cables provide a secure alternative to bare conductors, particularly in areas prone to tree contact or requiring improved safety clearances. Our Overhead Insulated Cable features durable XLPE or HDPE insulation over high-strength aluminum conductors, offering excellent weather resistance, UV stability, and reduced short-circuit risks. Ideal for aerial bundled cable (ABC) systems, they improve grid reliability by minimizing outages from external factors, making them perfect for urban, suburban, and rural power distribution.
Copper Concentric Round LV Cable
The Copper Concentric Round LV Cable is a high-performance low-voltage cable designed for reliable power delivery in residential and commercial service entrance applications. It features a stranded hard-drawn copper phase conductor with XLPE insulation, surrounded by concentrically arranged copper neutral conductors, and protected by a durable black polyethylene sheath. The round configuration ensures excellent flexibility, easy pulling through conduits, and balanced electrical performance. With superior conductivity, mechanical strength, and weather resistance, this cable is suitable for both aerial and underground installations. Manufactured to international standards, the Copper Concentric Round LV Cable undergoes rigorous quality testing from raw materials to finished product, guaranteeing consistent electrical performance, high safety, and long-term durability for modern LV networks.
15kV Concentric Neutral Power Cable
The 15kV Concentric Neutral Power Cable is a premium medium-voltage underground distribution cable designed for reliable primary power delivery in distribution networks. It features a stranded copper or aluminum conductor, extruded semi-conducting conductor shield, TR-XLPE or EPR insulation, semi-conducting insulation shield, and helically applied bare copper concentric neutral wires, all protected by a tough sunlight-resistant LLDPE jacket. Available in 100% or 133% insulation levels with full or reduced neutral, this cable provides excellent electrical performance, moisture resistance, and mechanical protection. Suitable for direct burial or duct installations, the 15 kV Concentric Neutral Power Cable meets ICEA S-94-649, AEIC CS8, and related standards. It undergoes rigorous quality testing from raw materials to finished product, ensuring long-term reliability, low dielectric loss, and high resistance to water treeing in demanding underground environments.
25kV Concentric Neutral Underground Power Cable
The 25 kV Concentric Neutral Power Cable is a high-performance medium-voltage underground cable designed for primary distribution systems. It features a stranded conductor, semi-conducting shields, tree-retardant TR-XLPE or EPR insulation, helically applied bare copper concentric neutral wires, and a sunlight-resistant LLDPE jacket. This construction provides excellent electrical performance, superior resistance to water treeing, and robust mechanical protection suitable for direct burial or duct installations. Available in various conductor sizes and insulation levels, the cable ensures safe and efficient power delivery. Manufactured to the latest ICEA S-94-649 and AEIC CS8 standards, the 25 kV Concentric Neutral Power Cable undergoes extensive quality testing to deliver consistent low dielectric loss and long service life in demanding underground environments.
28 kV Concentric Neutral Power Cable
The 28 kV Concentric Neutral Power Cable is a premium medium-voltage underground distribution cable engineered for reliable primary power delivery. It consists of a stranded copper or aluminum conductor, extruded semi-conducting conductor shield, tree-retardant TR-XLPE or EPR insulation, semi-conducting insulation shield, and helically applied bare copper concentric neutral wires, all protected by a tough sunlight-resistant LLDPE jacket. Available with 100% or 133% insulation levels and full or reduced neutral, this cable offers excellent electrical performance, superior moisture and treeing resistance, and strong mechanical protection. Suitable for direct burial or duct installations, the 28 kV Concentric Neutral Power Cable meets ICEA S-94-649, AEIC CS8, and related standards. It undergoes rigorous quality testing from raw materials to finished product, ensuring low dielectric loss, high reliability, and long service life in demanding underground environments.
35kV Concentric Neutral Underground Power Cable
The 35 kV Concentric Neutral Power Cable is a high-performance medium-voltage underground cable designed for primary distribution systems. It features a stranded conductor, semi-conducting shields, tree-retardant TR-XLPE or EPR insulation, helically applied bare copper concentric neutral wires, and a sunlight-resistant LLDPE jacket. This construction provides excellent electrical performance, superior resistance to water treeing, and robust mechanical protection suitable for direct burial or duct installations. Available in various conductor sizes and insulation levels, the cable ensures safe and efficient power delivery. Manufactured to the latest ICEA S-94-649 and AEIC CS8 standards, the 35 kV Concentric Neutral Power Cable undergoes extensive quality testing to deliver consistent low dielectric loss and long service life in demanding underground environments.
15kV Concentric Copper Power Cable
The 15kV Concentric Copper Power Cable is a premium medium-voltage underground distribution cable featuring a high-conductivity stranded copper conductor, extruded semi-conducting shields, tree-retardant TR-XLPE or EPR insulation, and a full concentric copper neutral layer protected by a rugged sunlight-resistant LLDPE jacket. This construction delivers superior electrical performance, excellent moisture and treeing resistance, and outstanding mechanical protection. Available with 100% or 133% insulation levels, the cable is ideal for direct burial or duct installations. Manufactured to ICEA S-94-649 and AEIC CS8 standards, the 15kV Concentric Copper Power Cable undergoes rigorous quality testing from raw materials to finished product, ensuring low dielectric loss, high reliability, and long service life in demanding underground environments.
Aluminum Concentric Service Cable - 600/1000V AA8000 XLPE LV Cable
The Aluminum Concentric Service Cable is a reliable low-voltage cable designed for efficient house service connections and secondary distribution. It features compact stranded AA8000 series aluminum alloy phase conductors, XLPE insulation, and a concentrically stranded aluminum alloy neutral layer, all protected by a durable black polyethylene sheath. The concentric design provides balanced electrical performance and mechanical strength while maintaining excellent flexibility for easy installation. With superior corrosion resistance and cost-effectiveness compared to copper cables, this cable is perfect for both aerial and underground applications. Rated 600/1000V, the Aluminum Concentric Service Cable meets international standards and undergoes rigorous quality testing from raw materials to finished product, ensuring consistent conductivity, long service life, and reliable performance in residential and light commercial networks.
Copper Concentric Service Cable - 600/1000V House Service Entrance Wire
The Copper Concentric Service Cable is a high-performance low-voltage cable designed for reliable house service connections and secondary distribution. It features a stranded hard-drawn copper phase conductor with XLPE insulation, surrounded by concentrically arranged copper neutral conductors, and protected by a durable black polyethylene sheath. The concentric design ensures balanced electrical performance, excellent mechanical strength, and easy installation in both aerial and underground applications. With superior conductivity and weather resistance, this cable delivers long-term reliability and safety for residential and commercial networks. Manufactured to international standards, the Copper Concentric Service Cable undergoes rigorous quality testing from raw materials to finished product, guaranteeing consistent electrical performance, high safety, and durability in modern LV systems.
Aerial Concentric Service Cable 600/1000V - Copper & Aluminum LV Overhead Cable
The Aerial Concentric Service Cable is specially designed for overhead low-voltage service connections. It consists of stranded copper or AA8000 aluminum alloy phase conductors with XLPE insulation, concentrically arranged neutral conductors, and a durable UV-stabilized black polyethylene sheath. The concentric round construction offers balanced electrical performance, high mechanical strength, and easy handling during installation. With excellent conductivity and weather resistance, this cable is suitable for long-term aerial exposure in residential, rural, and light commercial networks. The Aerial Concentric Service Cable meets international performance standards and undergoes extensive quality testing to ensure consistent performance, safety, and long service life for overhead LV applications.In-Depth Analysis
Overhead Insulated Cable are built to deliver high efficiency, reliable performance, and advanced safety, helping businesses reduce energy costs while ensuring stable power supply. With future-ready adaptability for renewable energy and smart grid applications, they provide a sustainable and innovative solution for today’s and tomorrow’s power needs.
Comparative Analysis of Efficiency and Loss
Compared to the industry average, NPC Overhead Insulated Cable exhibit lower losses and higher efficiency across the entire load range.
Load Efficiency Comparison(%)
No-load Loss Comparison(W)
High Conductivity Design
High-purity oxygen-free copper or high-quality aluminum conductors are used with smooth surface and low resistance to ensure efficient power transmission and reduce energy loss.
Improved Conductivity
+20%
Reduced Energy Loss
-15%
Insulation Protection System
Use flame-retardant, wear-resistant and corrosion-resistant polymer insulation materials to meet the safe operation requirements in different environments.
Withstand Voltage Level
≥1kV
Flame Retardant Grade
VW-1 / IEC 60332-3
Weather-Resistant & Durable Technology
The outer sheath is made of UV-resistant, heat-resistant, and oil-resistant materials, making it suitable for high and low temperatures, humidity, and long-term outdoor use.
Service Life
≥ 25 Years
Operating Temperature Range
-40°C to +90°C
Safe Flame Retardant System
The multi-layered flame-retardant structure effectively slows the spread of flames and releases low-smoke, halogen-free gases during combustion, reducing secondary hazards.
Flame Retardant Performance
IEC 60332 / UL 1581 Qualified
Smoke Density
Low Smoke ≤50%
Easy Installation & Maintenance
The flexible core and flex-resistant outer sheath provide a small bend radius and high installation efficiency. Color coding and length markings reduce installation and maintenance costs.
Bend Radius
≤6D
Installation Efficiency Improvement
+30%
Intelligent Monitoring
An optional remote monitoring system is available to monitor operating status, temperature, load and other parameters in real time, and supports fault warning and remote diagnosis.
Data Collection Frequency
one times a minute
Fault Warning Accuracy
98%
Environmental Adaptability Analysis
NPC Overhead Insulated Cable have been rigorously tested and can operate stably under various harsh environmental conditions.
Temperature Range
-40℃ ~ +55℃
Can work normally in extreme high and low temperature environments
Humidity Adaptation
0 ~ 100% RH
Including condensation environment, no frost requirement
Weather Resistance Grade
UV/IEC 60811-501
The outer sheath has excellent UV resistance and aging resistance
Chemical Corrosion Resistance
Oil / Acid / Alkali
Resistant to oil, acid, alkali and some chemical corrosion environments
Why Choose Us
With 30 years of expertise, global certifications, and advanced manufacturing technology, NPC Electric delivers reliable, high-performance overhead insulated cable trusted by industries worldwide.
Overhead Insulated Cable Manufacturer
NPC Electric is a leading overhead insulated cable manufacturer, specializing in the production of high-quality insulated power cables for overhead power lines and electricity distribution systems. Our overhead insulated cables are designed to provide safety, reliability, and long-term performance in outdoor installations, especially in high voltage and high-current applications. These cables offer excellent corrosion resistance and mechanical strength, ensuring minimal maintenance and increased durability. Made from premium materials and manufactured to international standards, NPC Electric’s insulated cables are perfect for urban, rural, and industrial networks. Our commitment to quality and innovation guarantees the reliable energy delivery and sustainable power distribution you need for any infrastructure project.
Overhead Insulated Cable Benefits
Overhead insulated cables offer several key benefits for power transmission networks. The primary advantage of insulated power cables is their enhanced safety, as they reduce the risk of electrical accidents by providing protection against accidental contact with live wires. These high voltage insulated cables also minimize the impact of environmental factors such as wind, rain, or snow on the transmission network. Corrosion-resistant cables are ideal for coastal areas or regions with high humidity, ensuring longevity and reducing maintenance costs. Additionally, insulated cables improve energy efficiency by minimizing losses and reducing the need for costly repairs. In renewable energy applications, such as solar and wind power systems, overhead insulated cables ensure safe and efficient energy delivery across vast areas.
Overhead Insulated Cable Installation
Overhead insulated cable installation requires careful planning and adherence to safety standards. NPC Electric ensures that our insulated power cables are installed following precise installation procedures, which include proper tensioning, securing to support structures, and maintaining safety clearances in overhead power lines. The high voltage cable installation process is designed to minimize risks and ensure long-term reliability. Once installed, insulated cables require regular maintenance to ensure optimal performance. This includes periodic inspections for damage, corrosion, and insulation wear, as well as testing for voltage endurance and mechanical integrity. NPC Electric’s cable maintenance services guarantee that power transmission networks continue to operate safely, efficiently, and with minimal downtime, ensuring reliable power delivery for urban, rural, and industrial installations.
Testing and Certification
At NPC Electric, every overhead insulated cable undergoes rigorous testing and certification to ensure optimal performance and safety. Our insulated power cables are tested for high voltage endurance, insulation resistance, and mechanical strength to meet IEC and ANSI standards. We conduct comprehensive quality control checks, including dielectric testing, temperature rise testing, and corrosion resistance evaluation to guarantee the durability of our high voltage cables in demanding environments. Each insulated cable is certified to meet international safety standards, ensuring reliable performance in overhead power lines, electricity distribution systems, and renewable energy projects. NPC Electric’s commitment to quality testing and certification ensures long-term, safe power transmission and minimal maintenance requirements.
Product Show
Explore the detailed design and practical application scenarios of overhead insulated cables
Overhead Insulated Cable
overhead cable have colors
Overhead Insulated Cable Color
overhead cable four colors
Aerial Bundled Cable
abc cable design cores
Aerial Bundled Cable Core
abc cable font view cores
Service Drop Cable
service drop cable cores design
Control Cables
control cables product show
Control Cables Structure
control cables structure design
Overhead Insulated SWA Cable
swa cable cores design
Testing and Certification
Tested with precision and certified to meet international standards as
well as strict industry requirements.
Bare Cable Test Report
SGS Inspection Report
Certificate of Acceptance
ISO Quality Certificate
ISO Environmental Certificate
ISO Occupational Certificate
UL Laboratory Certificate
UL Product Certificate
Project Cases
NPC wires and cables have been successfully applied in many projects and have been highly praised by customers.
Peru Solar PV Project
CompletedNPC Electric Delivers Medium-Voltage Cables for Peru Solar PV Project
Country：Peru
Model：HEPRZ1(AS) 1x630 mm² 19/33kV x 6km
Chile El Project
CompletedReliable 19/33kV MV cables ensuring safe, stable, and efficient power transmission for critical projects.
Country：Chile
Model：19/33kV MV Power Cables x 5km
Dominican Edenorte Project
CompletedProvide outdoor power solutions for urban main road reconstruction projects to adapt to complex environments.
Country：Dominican
Model：NPC AAAC Cable & Triplex Cable x 10km
Related Articles
Understand the product's characteristics, structure, and applications.
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
FAQ From Customers
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What is the structure of an overhead insulated cable?
Overhead insulated cables typically consist of a conductor, insulation layer, and an optional outer sheath. The conductor is usually made from aluminum or copper, providing excellent electrical conductivity. The insulation layer, made from materials like cross-linked polyethylene (XLPE) or PVC, protects the conductor and prevents accidental contact with live wires. An optional outer sheath is added for additional mechanical protection and durability, particularly in harsh environmental conditions. -
What materials are used for the insulation of overhead insulated cables?
The insulation of overhead insulated cables is typically made from cross-linked polyethylene (XLPE), which offers superior thermal stability, electrical insulation properties, and resistance to environmental factors. Alternatively, PVC (polyvinyl chloride) can be used for lower voltage applications. These materials help prevent electrical hazards by ensuring that the conductor remains safely insulated, especially in outdoor and exposed environments such as overhead power lines. -
How are overhead insulated cables manufactured?
The manufacturing process of overhead insulated cables begins with the conductor preparation, which involves drawing aluminum or copper to the desired size. The insulation layer is then applied using extrusion technology, ensuring uniform thickness and durability. For high voltage cables, the insulation is cross-linked to improve performance at elevated temperatures and resist electrical stress. The outer sheath is then added, providing protection against physical damage and environmental conditions. The entire process follows stringent quality control and testing procedures to ensure reliability and compliance with international standards such as IEC and ANSI. -
What makes overhead insulated cables suitable for high voltage applications?
Overhead insulated cables are suitable for high voltage applications due to their specialized insulation materials such as cross-linked polyethylene (XLPE), which provides excellent electrical strength and thermal stability. These materials prevent the risk of electrical leakage and offer protection against high voltage surges. The cables' mechanical strength and weather-resistant outer sheath ensure long-term durability and performance, even in extreme environments. Additionally, the insulated layers prevent external damage from wind, moisture, and physical contact, making them ideal for high-voltage power transmission. -
How do overhead insulated cables protect against environmental factors?
Overhead insulated cables are designed to withstand environmental challenges such as moisture, extreme temperatures, UV radiation, and mechanical stress. The insulation material, typically XLPE or PVC, offers excellent resistance to corrosion and weathering, ensuring long-lasting performance even in harsh climates. The outer sheath further protects the cable from abrasion, chemical exposure, and physical damage, ensuring that the cables maintain their integrity and electrical safety during their service life.
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