Product Specification

26/35kV Fire Resistant Copper Conductor Steel Wire Armoured Cable

26/35kV Copper Cable | Fire Resistant Medium Voltage Cable | Steel Wire Armoured Power Cable

Zhongdong Cable manufactures 26/35kV fire resistant copper conductor steel wire armoured cables for medium voltage power transmission and distribution systems, industrial facilities, renewable energy projects and other critical infrastructure applications.

The cable combines a copper conductor, XLPE insulation, metallic screen, galvanized steel wire armour and protective outer sheath. Depending on the project requirements, the cable can also be manufactured with fire-resistant, flame-retardant, low-smoke or halogen-free materials and constructions.

Cable construction, fire performance and testing can be customized according to the applicable IEC standard, project specification and installation requirements.

Product Overview

The 26/35kV fire resistant armoured cable is designed for medium voltage systems where electrical reliability and mechanical protection are required.

A typical construction includes:

Copper Conductor → Conductor Screen → XLPE Insulation → Insulation Screen → Metallic Screen → Inner Sheath/Bedding → Steel Wire Armour → Outer Sheath

The exact cable construction can be adjusted according to conductor size, short-circuit requirements, installation conditions, mechanical protection requirements and the customer's technical specification.

Key Features

• Rated voltage: 26/35kV
• Copper conductor for high electrical conductivity
• XLPE insulation for reliable medium voltage operation
• Metallic screen for electrical field control and fault-current requirements
• Galvanized steel wire armour for mechanical protection
• PVC, PE or LSZH outer sheath options
• Fire-resistant construction available according to project requirements
• Flame-retardant and low-smoke options available
• Suitable for underground and industrial installations
• Customized conductor sizes and cable constructions
• Customized drum length and packaging
• OEM and project-specific manufacturing available

Technical Specifications

Note: Final construction and technical values depend on the cable size, applicable standard and project specification. Detailed technical data such as conductor resistance, cable diameter, cable weight, current carrying capacity and short-circuit rating can be provided for individual cable sizes.

Available Cable Sizes

Zhongdong Cable can manufacture a wide range of 26/35kV copper armoured cables according to customer requirements.

Typical conductor sizes include:

Other conductor sizes and customized constructions are available upon request.

Cable Construction

1. Copper Conductor

The cable uses stranded or compacted copper conductors designed according to the applicable cable standard.

Copper offers high electrical conductivity and good mechanical properties, making it suitable for medium voltage power transmission and distribution applications.

The conductor cross-section can be selected according to:

• Required load current
• Installation method
• Voltage drop
• Short-circuit current
• Ambient conditions
• Cable grouping
• Project-specific electrical design

2. XLPE Insulation

XLPE is used as the primary insulation material for the medium voltage cable.

The insulation system provides reliable electrical performance and is designed for continuous conductor operating temperatures of up to 90°C, subject to the applicable standard and cable design.

3. Metallic Screen

The metallic screen can be constructed using copper tape, copper wires or another configuration specified by the customer.

The screen provides electrical field control and can also be designed to meet the required earth-fault and short-circuit current requirements.

4. Steel Wire Armour

The galvanized steel wire armour provides additional mechanical protection during cable transportation, installation and operation.

SWA construction is suitable for applications where the cable may be exposed to mechanical stress, underground installation conditions or demanding industrial environments.

5. Outer Sheath

The outer sheath protects the cable against environmental and mechanical influences.

Depending on the project requirements, available sheath materials include:

• PVC
• PE
• LSZH

Black is the standard sheath color, while other colors can be discussed according to the project specification.

Fire Resistant Cable Performance

For critical power supply systems, fire resistance may be an important requirement.

Zhongdong Cable can evaluate and manufacture fire-resistant cable constructions according to the customer's specified fire test standard and project requirements.

Depending on the required application, the cable may incorporate requirements for:

• Fire resistance
• Circuit integrity during fire
• Flame retardancy
• Low smoke emission
• Halogen-free performance
• LSZH outer sheath

Fire resistance is not determined by the product name alone. The applicable test standard and cable construction must be confirmed before production.

Customers requiring IEC 60331 or another specific fire-resistance test should provide the applicable test requirement so that our engineering team can review the construction and testing scope.

Applicable Standards

The cable can be manufactured according to international standards or customer-specific technical specifications.

Commonly referenced standards include:

IEC 60502-2

Power cables with extruded insulation for rated voltages from 6kV up to 30kV.

IEC 60228

Conductors of insulated cables.

Fire Resistance Standards

Where fire resistance is required, the applicable fire-resistance testing standard should be specified by the customer or project.

Other national standards, utility specifications and project-specific requirements can be reviewed upon request.

The final applicable standard should be confirmed before quotation and production.

Applications

Power Distribution

26/35kV copper armoured cables are used in medium voltage distribution networks connecting substations, transformers, switchgear and electrical loads.

Renewable Energy Projects

The cable can be used in medium voltage collection and power transmission systems for large-scale solar photovoltaic and other renewable energy projects.

Industrial Facilities

Suitable for power distribution in factories, manufacturing plants, processing facilities and other industrial installations.

Mining Projects

The steel wire armour provides additional mechanical protection for demanding mining and industrial environments.

Infrastructure Projects

Suitable for infrastructure projects requiring reliable medium voltage power transmission and mechanical protection.

Critical Power Systems

Fire-resistant cable constructions can be considered for applications where maintaining circuit integrity during a fire is an important project requirement.

Installation

Depending on the cable design and project requirements, the cable can be used for:

• Underground installation
• Cable trench installation
• Industrial cable systems
• Power distribution networks
• Substation connections
• Renewable energy installations
• Infrastructure projects

The minimum bending radius, installation tension, burial depth and other installation parameters should be confirmed according to the final cable construction and applicable standard.

Manufacturing & Quality Control

Zhongdong Cable has 20 years of cable manufacturing experience and an ISO-certified quality management system.

Our manufacturing capabilities cover low voltage, medium voltage and high voltage power cables, as well as specialized cable products.

For project-based orders, we can support:

• Technical specification review
• Cable construction confirmation
• Customized cable design
• OEM manufacturing
• Customer brand / private label
• Technical datasheets
• Routine testing
• Factory inspection support
• Customized drum packaging
• Export documentation

Each cable specification can be reviewed before production to ensure that the proposed construction matches the customer's technical requirements.

Cable Testing

Testing requirements depend on the applicable standard and project specification.

Typical testing may include:

• Conductor resistance test
• Voltage test
• Partial discharge test
• Insulation test
• Dimensional inspection
• Sheath inspection
• Mechanical tests
• Fire resistance testing where specified
• Other routine or type tests according to the applicable standard

Customers can provide their project testing requirements for technical confirmation before ordering.

Packaging and Delivery

26/35kV armoured cables can be supplied on:

• Steel drums
• Wooden drums
• Steel-wood composite drums
• Customer-specified packaging

Drum length can be customized according to the project requirements, transportation limitations and installation plan.

The following information can be provided for shipment planning:

• Cable length per drum
• Gross weight
• Net weight
• Drum dimensions
• Number of drums
• Total shipment volume

OEM & Custom Cable Manufacturing

Zhongdong Cable supports customized manufacturing for distributors, contractors, EPC companies, electrical wholesalers and project procurement teams.

Customization can include:

Cable construction:
Conductor, insulation, metallic screen, armour and sheath.

Conductor size:
According to project load and engineering requirements.

Sheath:
PVC, PE, LSZH or specified material.

Fire performance:
According to the applicable project requirement and test standard.

Cable marking:
Customer brand, cable designation, meter marking and other required information.

Packaging:
Customer-specified drum type, length and marking.

Why Source 26/35kV Cable Directly from the Manufacturer?

For medium voltage cable procurement, the final cable construction needs to match the project's electrical, mechanical and testing requirements.

Working directly with a manufacturer allows customers to confirm:

• Cable construction
• Applicable standards
• Conductor material and size
• Screen configuration
• Armour construction
• Fire performance
• Testing requirements
• Drum length
• Packaging
• Delivery schedule

This is particularly important for EPC projects and large-volume cable procurement where technical compliance and documentation are required before shipment.

Request a Quote

Looking for a 26/35kV copper cable manufacturer or supplier for your next power project?

Send us your cable specification and quantity. Our engineering and sales team can review the requirements and provide a technical proposal and quotation.

Please provide:

• Cable voltage
• Number of cores
• Conductor size
• Copper or aluminium conductor
• Required standard
• Fire resistance requirement
• Armour requirement
• Sheath material
• Total quantity
• Required length per drum
• Destination country or port
• Required delivery time

Send your cable specification to Zhongdong Cable for technical confirmation and quotation.

Get a Quote → Technical Review → Cable Specification Confirmation → Commercial Offer

Frequently Asked Questions

What is a 26/35kV cable?

A 26/35kV cable is a medium voltage power cable designed for electrical systems with a rated voltage of 26/35kV. Its conductor, insulation, screen, armour and sheath construction depend on the applicable standard and project requirements.

What does SWA mean?

SWA means Steel Wire Armoured. Steel wire armour provides mechanical protection for the cable and is commonly used in underground and industrial power cable applications.

Is the 26/35kV cable suitable for underground installation?

Yes. Armoured 26/35kV cables are commonly considered for underground and cable trench installations. The final installation method should be confirmed according to the cable design and project requirements.

Can you manufacture copper conductor 26/35kV cables?

Yes. Zhongdong Cable can manufacture copper conductor medium voltage cables in different conductor sizes and constructions according to customer requirements.

Can you manufacture fire-resistant 26/35kV cables?

Fire-resistant constructions can be developed according to the required fire test standard and project specification. Customers should provide the applicable fire-resistance requirement before production.

Can the cable use LSZH sheath?

Yes. LSZH sheath construction can be considered where low smoke and halogen-free performance is required, subject to the applicable specification.

Can you provide customized drum lengths?

Yes. Cable drum length can be customized according to project requirements, transportation conditions and installation requirements.

Can you provide technical datasheets?

Yes. Detailed datasheets can be prepared according to the specific cable size and construction, including electrical, dimensional and mechanical parameters.

Do you support OEM orders?

Yes. Zhongdong Cable supports OEM and customized cable manufacturing, including customer-specific cable construction, marking and packaging.

Contact Zhongdong Cable

Zhongdong Cable Co., Ltd.

Professional manufacturer of medium voltage and high voltage power cables.

20 Years of Cable Manufacturing Experience

For 26/35kV copper conductor fire-resistant armoured cable, send us your required specification and quantity for technical review and quotation.