64/110kV High Voltage XLPE Power Cable with Welded Corrugated Aluminium Sheath

64/110kV Copper Conductor Cable | XLPE Insulation | Welded Corrugated Aluminium Sheath | PE Outer Sheath

Zhongdong Cable Co., Ltd. supplies 64/110kV high voltage XLPE power cables with welded corrugated aluminium sheaths for high-voltage transmission networks, underground cable systems, substations and large-scale power infrastructure projects.

The (ZA/ZB/ZC-)YJLW02-64/110kV cable is designed with a copper conductor, XLPE insulation, a welded corrugated aluminium sheath and an outer protective sheath. Different conductor cross-sections are available according to project requirements, including conventional stranded conductors and segmented conductors for larger sizes.

With more than 20 years of cable manufacturing experience, Zhongdong Cable supports international cable procurement with product specifications, technical documentation, quotations and export packaging arrangements.

Contact our sales team for cable dimensions, technical specifications, project pricing and delivery information.

1. Product Overview

The 64/110kV high voltage power cable is intended for high-voltage transmission systems with a rated voltage of 64/110kV (U₀/U) and a highest system voltage of 123kV (Uₘ).

The cable uses cross-linked polyethylene (XLPE) as its main insulation material. Semiconductive screens form part of the high-voltage insulation system to control electrical stress. A welded corrugated aluminium sheath provides a metallic sheath layer, while the outer sheath protects the cable according to the specified construction and installation conditions.

The corrugated aluminium sheath is a key feature of this cable design. Its construction provides a shaped metallic sheath that can accommodate bending requirements according to the cable design. The sheath also forms part of the cable's electrical screening and earthing system, subject to the specified bonding arrangement.

The cable is suitable for high-voltage transmission projects where the specified cable design meets the electrical, mechanical and environmental requirements of the installation.

2. Product Specifications

Final dimensions, material specifications, sheath construction, electrical ratings and testing requirements are subject to the approved technical specification.

3. Cable Construction

The cable construction is based on the following principal layers. The exact materials, dimensions and additional components are defined by the approved product design.

3.1 Copper Conductor

The copper conductor carries the electrical current. Different conductor cross-sections are available to meet project requirements, including 240mm², 300mm², 400mm², 500mm², 630mm² and larger segmented conductor designs.

3.2 Conductor Screen

A semiconductive layer is applied over the conductor to provide a controlled interface between the conductor and the XLPE insulation.

3.3 XLPE Insulation

Cross-linked polyethylene insulation provides the dielectric performance required for the 64/110kV rated voltage.

3.4 Insulation Screen

The semiconductive insulation screen supports electrical stress control around the insulation and forms the interface with the metallic sheath system.

3.5 Welded Corrugated Aluminium Sheath

The welded corrugated aluminium sheath forms a metallic sheath layer around the insulated cable core. Its dimensions and electrical characteristics are considered in the cable's sheath bonding, earthing and installation design.

3.6 Outer Protective Sheath

The outer sheath provides protection against environmental exposure and external influences within the limits of the specified cable design. The exact sheath material and construction should be confirmed against the manufacturer's approved technical documentation.

Additional water-blocking components or other protective layers should be included only when required by the approved cable specification.

4. Cable Construction and Dimensional Data

5. Key Product Features

• 64/110kV high-voltage rating: Designed for specified 110kV-class transmission systems.

• Copper conductor: Provides the conductive path for high-voltage power transmission.

• XLPE insulation: Provides the dielectric performance required by the specified voltage rating.

• Welded corrugated aluminium sheath: Provides a defined metallic sheath construction for high-voltage cable applications.

• Multiple conductor sizes: Construction options range from 240mm² to 1600mm² in the listed designs.

• Segmented conductor options: Available in the listed larger conductor sizes, subject to the approved design.

• Project-specific construction: Cable dimensions, sheath requirements, screen arrangements and other details can be specified for individual projects.

6. Applications

6.1 High-Voltage Transmission Networks

Used in specified 110kV-class transmission circuits connecting substations and other parts of the electrical grid.

6.2 Underground Power Transmission

Suitable for underground transmission projects where the cable's sheath construction, mechanical protection and installation characteristics meet the design requirements.

6.3 Substation Connections

Used for designated high-voltage connections in substations and utility power infrastructure.

6.4 Utility and Infrastructure Projects

Suitable for procurement by power utilities, electrical engineering contractors, EPC companies and infrastructure developers requiring high-voltage cable systems.

The final cable selection depends on load current, route length, installation method, soil thermal resistivity, cable grouping, sheath bonding and earthing arrangements, and applicable local regulations.

7. Applicable Standards and Testing

IEC 60840 covers power cables with extruded insulation and their accessories for rated voltages above 30kV (Uₘ = 36kV) up to 150kV (Uₘ = 170kV). It is a relevant standard for 64/110kV cable systems.

The applicable edition and contractual requirements must be specified for the project. Technical documentation may include:

• Cable construction and dimensional drawings

• Conductor resistance data

• Insulation and sheath material specifications

• Metallic sheath and bonding information

• Relevant routine, sample and type-test documentation

• Cable drum dimensions and packing details

Testing and conformity claims must be supported by the actual cable design, applicable test records and relevant documentation.

8. Why Choose Zhongdong Cable?

Zhongdong Cable Co., Ltd. manufactures power cables and industrial cables for international markets.

• More than 20 years of cable manufacturing experience.

• Product range covering low-voltage, medium-voltage and high-voltage power cables, solar cables, control cables and overhead conductors.

• ISO 9001, ISO 14001 and ISO 45001 management system certifications, subject to the applicable certification scope.

• Technical documentation and quotation support for projects specifying applicable IEC and other international standards.

• Export packaging and shipment coordination for overseas orders.

For high-voltage cable enquiries, our team can review the required conductor size, cable construction, route conditions, quantity and delivery destination to prepare a project-specific offer.

9. Frequently Asked Questions

What does 64/110kV mean?

64/110kV represents the rated voltage U₀/U: 64kV between conductor and earth or metallic screen, and 110kV between conductors. The associated highest system voltage Uₘ is 123kV.

What is the function of a welded corrugated aluminium sheath?

The welded corrugated aluminium sheath forms part of the cable's metallic sheath system. Its mechanical and electrical functions depend on the cable design, bonding arrangement and installation requirements.

Which conductor sizes are available?

The construction table lists 240mm², 300mm², 400mm², 500mm², 630mm², 800mm² and larger segmented conductor designs up to 1600mm². The required size should be selected according to the electrical and thermal design of the project.

What is the applicable standard for this cable?

IEC 60840 is a relevant standard for high-voltage extruded-insulation power cables and accessories within its specified voltage range. The exact edition and compliance requirements must be confirmed for the product and project.

How can I request a quotation?

Please provide the required conductor cross-section, cable length, installation conditions, project standard, destination and delivery requirements. If available, send your cable schedule or technical specification for review.