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.
336.4 Nannynose Aluminum Conductor Triplex Overhead Service Drop Cable
Built for high-demand overhead applications, the 336.4 Nannynose Aluminum Conductor Triplex Overhead Service Drop Cable provides robust power transmission. It features three 336.4 MCM (19/w) 1350-H19 aluminum conductors: two black XLPE-insulated phases for superior dielectric and environmental protection, cabled around a bare 336.4 MCM (19/w) AAC neutral messenger for excellent tensile strength and sag control. Rated 600V with 90°C conductor temperature and ampacity up to 420A (XLPE), this cable complies with ASTM B-230/B-231 and ICEA S-76-474. Lightweight, corrosion-resistant, and cost-effective, the 336.4 Nannynose ensures dependable performance in large secondary distribution and service drop installations.
336 Limpet Aluminum Conductor Triplex Overhead Service Drop Cable
The 336 Limpet Triplex Aluminum Overhead Service Drop Cable is specifically designed for reliable and efficient power distribution from utility poles to residential, commercial, and light industrial service entrances. This cable features two insulated aluminum phase conductors and a bare ACSR (Aluminum Conductor Steel Reinforced) messenger, which serves as both the neutral conductor and the primary mechanical support for the cable. The conductors are insulated with black cross-linked polyethylene (XLP), delivering exceptional UV resistance, moisture protection, and long-term outdoor durability. Rated 600V phase-to-phase with conductor temperatures up to 90°C (XLPE), it supports ampacity ratings around 395–445A (depending on conditions). Compliant with ASTM B-230, B-231, B-232, and ICEA S-76-474 standards, the 336 Limpet offers lightweight, corrosion-resistant construction ideal for demanding secondary distribution and large-scale service drops.
Copper Conductor Triplex Service Drop Cable 600V
The Copper Conductor Triplex Service Drop Cable 600V delivers exceptional performance for overhead power distribution from utility poles to service entrances. It features three stranded soft copper conductors: two phase conductors (common sizes 8 AWG to 2 AWG or larger) insulated with black cross-linked polyethylene (XLPE) for outstanding weather, UV, and moisture resistance, twisted around a bare copper neutral messenger for mechanical support and reduced sag. Rated 600V phase-to-phase with conductor temperatures up to 90°C (XLPE), it provides higher ampacity than aluminum equivalents (e.g., ~85–180A depending on size) due to superior conductivity. Compliant with ASTM B-1, B-3, B-8, and ICEA S-76-474 standards, the Copper Conductor Triplex Service Drop Cable offers excellent corrosion resistance, lower voltage drop, and long-term reliability in demanding aerial installations where premium conductivity is essential.
NS75/NS90 Triplex Unjacketed Overhead Neutral Supported Cable
The NS75/NS90 Triplex Unjacketed Overhead Neutral Supported Cable provides efficient overhead power delivery for Canadian utilities. It consists of two compact 1350-H19 aluminum phase conductors insulated in black sunlight-resistant PE (NS75, 75°C) or XLPE (NS90, 90°C), twisted around a bare ACSR full neutral messenger for structural support and reduced sag. Rated 600V, with NS90 offering higher ampacity due to 90°C rating, it meets CSA C22.2 No. 129 and supports single-phase service drops or secondary distribution. The unjacketed triplex design is lightweight, easy to install, and resistant to weathering, abrasion, and chemicals. Compliant with relevant standards, the NS75/NS90 Triplex ensures cost-effective, durable performance in pole-to-building or pole-to-pole aerial setups.
Triplex Aluminum Conductor Overhead Service Drop Cable 600V
The Triplex Aluminum Conductor Overhead Service Drop Cable 600V is designed for reliable overhead electrical connections between utility distribution lines and service entrances. The cable consists of two insulated aluminum phase conductors helically twisted around a bare or insulated neutral messenger, providing balanced electrical performance and mechanical strength. Manufactured with high-purity aluminum conductors, this Triplex Aluminum Conductor Overhead Service Drop Cable 600V offers excellent conductivity,a lightweight structure, and ease of installation. The insulation material is engineered to resist UV radiation, moisture, heat, and environmental aging, ensuring long-term outdoor service under various climate conditions. A comprehensive quality assurance system is applied throughout production. From raw material verification to in-process control and final inspection, every Triplex Aluminum Conductor Overhead Service Drop Cable 600V is manufactured in accordance with international standards and utility specifications. This cable is widely used in residential, commercial, and light industrial power distribution systems where safety, durability, and stable electrical performance are required.
XLPE-HDPE Tree Cable Aluminum 25kV 1x35mm²
The XLPE-HDPE Tree Cable Aluminum 25kV 1x35mm² is specifically engineered for medium-voltage overhead distribution systems, particularly in densely wooded areas or locations with limited installation space. Manufactured in compliance with ASTM B230, ASTM B232, and ICEA S-121-733 standards, this cable features an aluminum alloy conductor, cross-linked polyethylene (XLPE) insulation, and a high-density polyethylene (HDPE) outer sheath, ensuring outstanding electrical performance, mechanical durability, and environmental resistance. The HDPE outer sheath provides strong protection against UV radiation, weathering, and mechanical abrasion, while significantly reducing the risk of power outages caused by tree branch contact and electrical sparking. The XLPE insulation layer guarantees stable dielectric performance at continuous operation temperatures up to 90°C, and the 1350 aluminum alloy compact conductor offers a lightweight yet high-conductivity solution, meeting the reliability requirements of medium-voltage power distribution.
XLPE-HDPE Tree Cable Aluminum 25kV 1x50m㎡
The XLPE-HDPE Tree Cable Aluminum 25kV 1x50mm² is engineered for superior performance in medium-voltage overhead distribution networks, delivering exceptional reliability and long-term durability. Designed for challenging environments such as forested regions and urban areas, this cable ensures consistent power supply while minimizing maintenance and unplanned outages. Constructed with high-conductivity aluminum alloy 1350 wires, the cable features a round compacted conductor with class 2 stranding, achieving a minimum conductivity of 61% IACS and tensile strength of at least 130 MPa. Optional conductor shielding with an extruded semiconductor thermosetting compound is available for enhanced performance in 15kV and 25kV applications. The inner insulation is made from cross-linked polyethylene (XLPE), supporting continuous conductor operation at 90°C, and meeting ICEA S-121-733 physical standards. The robust outer cover is composed of high-density polyethylene (HDPE), offering outstanding resistance against weathering, UV radiation, mechanical abrasion, and electrical sparking up to 2.75kV. Standard cables come in gray with sequential metering markings in accordance with ASTM B230, while blue cables are recommended for harsher conditions requiring spark resistance above 5kV.
XLPE-HDPE Tree Cable Aluminum 25kV 1x70mm²
The XLPE-HDPE Tree Cable Aluminum 25kV 1x70mm² is specially designed for medium-voltage overhead distribution systems that demand higher load capacity. Its robust construction ensures outstanding performance and reliability even in harsh outdoor conditions, making it ideal for wooded areas, semi-urban environments, and locations where maintenance and tree-trimming need to be minimized. The conductor is made from high-conductivity aluminum alloy 1350 wires, round compacted with class 2 stranding, achieving a minimum conductivity of 61% IACS and a tensile strength of at least 130 MPa. Optional conductor shielding with an extruded semiconductor thermosetting compound is available for 15kV and 25kV applications, providing enhanced electrical performance. This 25kV XLPE-HDPE tree cable delivers reliable, eco-friendly power distribution with reduced maintenance needs. Its combination of high current capacity, environmental resilience, and long service life makes it a perfect solution for medium-voltage overhead networks in challenging outdoor settings.
XLPE-HDPE Tree Cable Aluminum 25kV 1x95mm²
The XLPE-HDPE Tree Cable Aluminum 25kV 1x95mm² is engineered for medium-voltage overhead distribution networks that demand very high current capacity. Ideal for long-distance transmission in rural, industrial, and high-demand urban areas, this cable provides exceptional reliability and performance under harsh environmental conditions. Its design minimizes energy losses, supports stable power supply, and ensures dependable large-scale power distribution. Constructed with high-conductivity aluminum alloy 1350 wires, the conductor features round compacted, class 2 stranding with a minimum conductivity of 61% IACS and tensile strength of at least 130 MPa. Optional conductor shielding with extruded semiconductor thermosetting compound is available for enhanced performance in 15kV and 25kV applications. With its high current capacity, robust construction, and environmental resilience, the XLPE-HDPE 25kV tree cable 1x95mm² delivers reliable, long-term power distribution for challenging overhead network 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
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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