Wires and Cables
Concentric Cable
Experience unparalleled security and efficiency with advanced Concentric Cables. Meticulously engineered for critical service entrance and distribution, these cables are the definitive choice for environments demanding enhanced protection against unauthorized access and tampering. Our Concentric Cables feature a robust design: a precisely centered phase conductor enveloped by a concentric neutral, all fortified within a high-integrity outer sheath. This ingenious construction inherently provides superior mechanical integrity, exceptional tamper deterrence, and enhanced operational safety. Insulated with premium XLPE or PVC, they ensure unwavering power reliability while offering a compact, enduring, and remarkably secure solution for modern electrical infrastructure.
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.
0.6/1kV Aluminum LV Concentric Service Cable with Pilot Communication Cores
The 0.6/1kV Aluminum LV Concentric Service Cable with Pilot Communication Cores is a smart-ready low-voltage cable designed for modern house service connections and secondary distribution. It features compact stranded AA8000 aluminum alloy phase conductors, XLPE insulation, a concentrically arranged aluminum alloy neutral, and two insulated pilot communication cores for remote metering, load management, or fault signaling. The entire assembly is protected by a durable black polyethylene sheath. This design combines excellent electrical performance, high mechanical strength, and communication functionality in one cable, reducing installation costs and enabling smart grid applications. Rated 0.6/1kV, the cable offers superior flexibility and corrosion resistance. It undergoes rigorous quality testing from raw materials to finished product, ensuring consistent conductivity, reliable pilot signal transmission, and long-term durability in aerial or underground environments.In-Depth Analysis
Concentric 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 Concentric 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 Concentric 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 concentric cable trusted by industries worldwide.
Unrivaled Security & Tamper Deterrence
Our concentric cables are specifically engineered to offer unrivaled security, making them the superior choice for service entrance and distribution applications where tamper deterrence is critical. The unique concentric design, with its uniformly distributed neutral conductor surrounding the phase core, significantly complicates any unauthorized attempts at power diversion or tampering. This inherent anti-theft construction not only protects against illegal connections but also safeguards the integrity of your electrical network. By choosing our cables, you invest in a secure power solution that actively minimizes revenue loss and enhances the overall security of your power distribution infrastructure.
Enhanced Safety & Robust Protection
Safety is paramount, and our concentric cables deliver enhanced protection for both personnel and property. The robust outer sheath and the concentric neutral conductor provide superior mechanical strength, guarding against accidental damage during installation or from external impacts. This design also offers an additional layer of safety by ensuring immediate fault detection in case of insulation compromise. Manufactured with premium XLPE or PVC insulation, our cables exhibit excellent resistance to abrasion, moisture, and environmental stresses, ensuring long-term operational integrity. Choose our safe power cables for resilient and protected underground and aerial service applications.
Optimal Performance & Compact Design
Our concentric cables are meticulously designed for optimal electrical performance while offering a highly compact design. This efficient construction allows for easier handling and installation in confined spaces, making them ideal for modern urban power distribution systems. Despite their compact profile, these cables deliver excellent current-carrying capacity with minimal energy loss and voltage drop, ensuring stable and efficient power delivery. The streamlined design reduces the need for larger conduits or trenches, leading to installation cost savings and faster deployment. Experience the perfect blend of performance and practical design with our reliable power cables.
Long-Term Value & Compliance
Investing in our concentric cables offers exceptional long-term value and ensures full compliance with industry standards. Each cable is manufactured under stringent quality controls, adhering to international specifications to guarantee durability and consistent performance over decades. This commitment to quality translates into minimal maintenance requirements and a significantly extended operational lifespan, reducing your total cost of ownership. Our concentric cable solutions are a reliable, future-proof choice for service entrance cable and general power distribution, providing a secure and compliant foundation for essential electrical services, thus protecting your investment for years to come.
Product Show
Explore the detailed design and practical application scenarios of concentric cable
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 concentric 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
-
What is a concentric cable?
A concentric cable is an electrical cable consisting of a central conductor, typically made of copper or aluminum, surrounded by one or more layers of insulating material and an outer layer of wire conductors that form the return path for the current. Commonly used in low-voltage power distribution systems, concentric cables are ideal for underground installations, providing both electrical power and protection against short circuits. These cables are designed to withstand mechanical stresses and environmental factors. -
What is the difference between 16mm concentric cable and 25mm concentric cable?
The primary difference between the 16mm concentric cable and the 25mm concentric cable is the size of the conductor and their current-carrying capacity. 16mm concentric cable is commonly used for residential and small commercial applications where lower power transmission is required, while 25mm concentric cable is suitable for medium power distribution in larger residential areas or commercial buildings. Both cables offer excellent mechanical protection, but 25mm cables support higher current loads and are better suited for larger electrical systems. -
What are the applications of split concentric cable?
Split concentric cables are commonly used for low-voltage power distribution in underground networks. The design of a split concentric cable includes a central conductor, surrounded by an insulating layer, with an outer sheath of concentric conductors that are separated into two parts. This design makes split concentric cables ideal for two-way transmission systems, offering improved electrical performance and safety. Split concentric cables are widely used in utilities, residential power connections, and street lighting systems, providing reliable and secure energy distribution. -
What is the advantage of concentric cables over standard cables?
Concentric cables offer several advantages over standard cables, particularly in power distribution systems. The concentric construction provides added mechanical strength and safety by using the outer conductive layer as a neutral conductor, which reduces the risk of electrical faults and short circuits. This type of cable is ideal for underground installations as it minimizes space requirements and improves electrical stability. The use of insulated concentric cables also offers protection against external damage and environmental factors, making them more reliable in urban environments and harsh weather conditions. -
What are the specifications of concentric cable 16mm and concentric cable 25mm?
Concentric cable 16mm and concentric cable 25mm have different specifications tailored to their intended applications. The 16mm concentric cable is designed for smaller power loads and is typically used for low-voltage residential and commercial networks, with a smaller conductor size and current-carrying capacity. On the other hand, a 25mm concentric cable is used for higher current applications and offers greater power handling capability, often used in medium power distribution systems. Both cables feature durable insulation, concentric conductor layers, and corrosion-resistant materials, ensuring long-lasting performance.
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