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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 Team64/110kV Cable
The 64/110kV Cable collection, serving as the heavy-duty pinnacle within our High Voltage Cable network, stands as the definitive standard for metropolitan backbone grids, power plant main transmission bays, and national energy interconnection links. Engineered to withstand extreme grid loads, this flagship macro-grid series guarantees ultimate electrical stability under intense electrostatic stress over decades of service.
·Standards: IEC 60840
·Cores: 1 Core Only (Note: Single-core design allows for massive conductor dimensions and isolates thermal loop stresses)
·Conductors & Waterproofing: Heavy-gauge Copper or Aluminum conductors paired with premium Corrugated Aluminum Sheaths to withstand rugged geological pressure and provide permanent moisture sealing.
·Material Matrix: Featuring ultra-pure 110kV-grade XLPE insulation, the external protective sheathing is interchangeable between high-density PE and industrial PVC formulas to match specific environmental layout criteria.
Key Advantages
·Flagship Grid Load Performance: Precision-extruded semi-conductive screens and high-purity insulation handle severe electro-static electric field stress, delivering the maximum continuous grid capacity required by main metropolitan networks.
·Ultimate Subterranean Defense: The heavy, seamlessly formed corrugated aluminum sheath serves as an impenetrable armor shield against massive vertical earth loads, jagged rock backfills, and destructive underground biological hazards.
·Low-Resistance Fault Return Path: The robust continuous aluminum jacket functions as an exceptional, high-capacity fault-current return path, massively upgrading power station and substation system grounding safety during high-amperage short circuits.
Application Guideline
·Choose 110kV: Mandated for major city electricity grids, power station outputs to national grids, overhead-to-underground transition bays, and large-scale regional substations with maximum mechanical and electrical stress.
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.
