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Zhongdong Cable manufactures high voltage cable for utility grids, substations, underground transmission corridors, power generation facilities and large-scale energy infrastructure. Our 38/66kV and 64/110kV XLPE cable systems are available with copper or aluminum conductors, screened insulation systems, water-blocking layers and project-specific outer protection.
High voltage cable selection should begin with system voltage, transmission capacity, conductor material, installation route, moisture exposure and the required metallic protection system. Zhongdong currently provides two core HV cable ranges for transmission-level projects.
Designed for high-capacity sub-transmission networks, primary substations, industrial power intake and renewable energy grid connections.
Developed for major utility networks, regional substations, power generation connections and high-capacity underground transmission systems.
Reliable HV transmission depends on much more than conductor size. The insulation system, electric stress control, water protection and metallic sheath must work together as one engineered cable system.
| Cable Layer | Available Design | Primary Function |
|---|---|---|
| Conductor | Copper or aluminum | Carries the required transmission current. |
| Conductor Screen | Extruded semiconductive layer | Controls electrical stress around the conductor surface. |
| Main Insulation | High-purity XLPE | Provides the primary dielectric barrier for high-voltage operation. |
| Insulation Screen | Extruded semiconductive screen | Creates controlled electric-field distribution around the insulation. |
| Water Blocking | Longitudinal and radial moisture protection options | Reduces moisture migration through underground cable systems. |
| Metallic Protection | Corrugated aluminum sheath | Provides moisture protection and mechanical protection for demanding routes. |
| Outer Sheath | PVC or PE | Protects the cable from installation and environmental exposure. |
Zhongdong high voltage power cables are engineered for fixed transmission installations where electrical reliability, insulation integrity and moisture protection are critical.
Regional transmission and high-capacity utility network connections.
Incoming and outgoing high-voltage feeder circuits.
Urban corridors, buried routes, ducts and infrastructure networks.
Connections between generating facilities, transformers and transmission systems.
High-capacity grid connections for wind, solar and renewable generation projects.
Main high-voltage intake systems for heavy industrial power demand.
Two projects using the same voltage class may require different cable constructions. Before confirming an HV cable specification, our engineering team reviews the electrical and installation conditions that influence conductor selection, insulation design, moisture protection and outer sheath configuration.
Rated voltage, conductor material, required current capacity and system configuration.
Direct burial, duct installation, underground corridor, tunnel or substation connection.
Moisture exposure, soil conditions, installation depth and mechanical protection requirements.
Water-blocking construction, corrugated aluminum sheath and PVC or PE outer protection.
Applicable IEC requirements, utility specifications and required inspection documentation.
Route length, cable drum requirements, packaging and project delivery schedule.
High voltage cable manufacturing requires strict control over conductor preparation, semiconductor screening, XLPE insulation, dimensional consistency, metallic protection and finished-cable testing.
Zhongdong high voltage cable products are manufactured for IEC 60840 project requirements, with third-party testing documentation available according to project and order requirements.
HV cable procurement requires more than finding a product with the correct voltage marking. Manufacturing consistency, testing capability, engineering support and the ability to adjust cable construction to project conditions are equally important.
Dedicated manufacturing capability supports both 38/66kV and 64/110kV XLPE high voltage cable projects.
Cable construction can be configured according to conductor choice, water protection, sheath system and route conditions.
Cable products support customers and infrastructure projects across the Middle East, Africa, Southeast Asia, South America and other international markets.
Providing basic engineering information at the RFQ stage allows our team to recommend a more accurate cable construction and prepare the quotation faster.
Zhongdong manufactures 38/66kV and 64/110kV XLPE high voltage power cables for utility transmission, substations, underground power networks, generation facilities and major industrial power systems.
Yes. High voltage cable constructions can use copper or aluminum conductors depending on project current capacity, design requirements and procurement specifications.
Zhongdong's 38/66kV and 64/110kV high voltage cable ranges are designed for IEC 60840 requirements. Project-specific specifications and documentation can also be reviewed before production.
Yes. Conductor material, sheath configuration, water-blocking system, outer jacket and other construction details can be evaluated according to installation environment and project specifications.
Selection is primarily determined by the system's rated voltage and utility design. The final cable specification should also consider required current capacity, installation route, environmental conditions and project engineering requirements.
Please provide voltage class, conductor material and size, required quantity or route length, installation conditions, sheath requirements, applicable standard and any required testing or documentation.
Send us your cable schedule, voltage level, conductor requirement, route conditions and project standard. Our engineering team can review your requirements and recommend a suitable 38/66kV or 64/110kV cable construction.
Request a Project Quotation Email Our Cable Team38/66kV Cable
This High Voltage Cable and 38/66kV Cable series is engineered for high-capacity sub-transmission networks, industrial plant main feeds, and heavy wind/solar power farm connections. As a cornerstone of regional high-voltage transmission, this optimized range strikes the perfect balance between high-power delivery and structural flexibility for expanding urban utility grids.
·Standards: IEC 60840
·Cores: 1 Core Only (Note: Single-core execution isolates alternating electromagnetic fields and accommodates large conductor sections)
·Conductors & Waterproofing: High-conductivity Copper or Aluminum conductors backed by lightweight Corrugated Aluminum Sheaths for 100% radial moisture defense and rugged impact protection.
·Material Matrix: Designed with high-purity XLPE insulation, the external jackets can be selected independently between premium PE and PVC to fit localized underground burial or tunnel environments.
·Optional Upgrade: Outer protective jackets can be reinforced with tailored semi-conductive layers to simplify routine field sheath voltage testing after installation.
Key Advantages
·Anti-Water-Treeing Insulation: By implementing ultra-clean XLPE and dual-layer (radial and longitudinal) water-blocking elements with a corrugated aluminum barrier, these cables permanently block water vapor ingress, completely eliminating water-tree degradation.
·Zero Inductive Loop Losses: The single-core layout wrapped with non-magnetic aluminum sheath choices completely avoids magnetic loop heat bottlenecks, protecting the system's total transmission ampacity under heavy continuous loads.
·Balanced Mechanical Defense: While maintaining excellent thermal dissipation, the tough corrugated aluminum outer layer serves as a reliable lifetime shield against heavy soil pressure, rodent attacks, and termite penetration.
Application Guideline
·Choose 66kV: Crucial for urban primary substation inputs, wind turbine main lines, and high-load industrial transformer connections where 110kV infrastructure is not required.
Zhongdong Cable combines premium raw materials, large-scale manufacturing capabilities, and strict quality control systems to deliver cable products that fully match your technical requirements and brand identity.
