XLPE Insulated Power Cables Manufacturers

Our Power Cable Range

Our power cable family is organised by voltage class, conductor material, core count and protection level. Each construction is available in copper or aluminium, and we build the sheath and armour combination around the installation route rather than forcing a single standard design.

Conductor, Insulation and Sheath Selection

XLPE insulation allows a continuous conductor operating temperature of 90 °C and a short-circuit temperature of approximately 250 °C, which supports higher current-carrying capacity than PVC-insulated equivalents. We draw and strand copper or aluminium conductors in-house, then apply the insulation and sheath layers on dedicated extrusion lines.

• Copper conductors — higher conductivity, preferred for high-voltage cables and space-constrained routes.
• Aluminium conductors — lower weight and cost, suitable for long distribution runs where bending radius and termination practice are managed.
• PVC sheath — flame retardant properties for indoor and building distribution.
• PE sheath — improved water resistance, UV stability and chemical resistance for outdoor, buried or damp installations.
• Steel tape armour — protection against crushing and impact in buried or ducted routes.
• Steel wire armour — additional tensile strength for vertical or long-pull installations.

Production Process and Quality Control

Our production flow covers raw material preparation, wire drawing, stranding, insulation extrusion, cable formation, filling, sheath extrusion, armouring where required, and final testing. Inspections are carried out after each process stage, and finished cables are tested for conductor resistance, insulation integrity and sheath performance before dispatch.

We operate our own factory and manage the supply chain directly, which gives us control over material purity, cross-linking consistency and dimensional stability. The flagship “Xinlei” brand holds China Quality Certification Center (CCC) certification, and our cables are used in power transmission, industrial automation and urban construction projects.

Installation and Application Considerations

Power cable selection depends on more than voltage class. Route conditions, ambient temperature, grouping, burial depth and fault level all influence the final construction. We review these inputs with your project team and recommend the conductor size, insulation thickness, screen and armour combination that matches the installation.

• Indoor and tunnel routes — PVC sheathed, non-armoured cables where fire performance and ease of pulling are priorities.
• Direct burial — steel tape armoured cables with PE sheath for moisture and mechanical protection.
• Vertical shafts and long pulls — steel wire armoured constructions to manage tensile load.
• High ambient temperature — XLPE insulation with appropriate derating factors applied to current-carrying capacity.
• Grouped circuits — spacing and grouping factors applied according to the installation method.

Customisation and Project Support

We develop and manufacture power cables to drawings or samples supplied by customers. Custom options include conductor material and cross-section, core count, insulation and sheath compounds, armour type, cable length and drum configuration. Flame retardant and fire resistant variants are available for projects with specific fire safety requirements.

Our engineering team supports the configuration process from initial enquiry through to delivery. We confirm the technical parameters, review the installation conditions and prepare a proposal that reflects the actual working point rather than a generic catalogue selection.

Related Cable Products

Beyond XLPE power cables, we manufacture Aluminum Alloy Cables for overhead and distribution applications, and Solar Cables for photovoltaic DC circuits. These product families share the same in-house production and testing approach as our power cable range.

Information We Use to Configure Your Solution

To prepare an accurate power cable proposal, we need the following project data. The more detail you provide at enquiry stage, the faster we can confirm the construction and provide a quotation.

Frequently Asked Questions

What voltage classes do your XLPE power cables cover?

We manufacture XLPE insulated power cables from 0.6/1 kV up to 26/35 kV, including 3.6/6 kV, 6/10 kV and 26/35 kV constructions. The range covers single-core and multi-core designs with copper or aluminium conductors.

Can you supply armoured cables for direct burial?

Yes. We produce steel tape armoured and steel wire armoured XLPE cables with PVC or PE sheathing. For direct burial, we typically recommend a PE sheath with steel tape armour to provide moisture resistance and mechanical protection.

Do you manufacture custom cable lengths and drum sizes?

We manufacture to project-specific lengths and drum configurations. Provide the total route length, any maximum drum size restrictions and the delivery location, and we will confirm the drum schedule with the quotation.

What testing is performed on finished power cables?

Finished cables undergo conductor resistance testing, insulation integrity checks and sheath performance verification. Inspections are carried out after each production process, and final testing is performed before dispatch. Test certificates are provided with the delivery documentation.

How do I request a quotation for power cables?

Send us the system voltage, conductor material and size, core configuration, installation conditions and required length. Our team will review the parameters and respond with a technical proposal and quotation, normally within 24 hours on working days.