8.7/15kV AL/XLPE/CTS/SSTA/PVC Single Core Armoured Cable for Underground Power

Product Specification

8.7/15kV AL/XLPE/CTS/SSTA/PVC Single Core Armoured Cable for Underground Power Distribution

Product Overview

The 8.7/15kV AL/XLPE/CTS/SSTA/PVC medium voltage armoured cable is designed for reliable power transmission in underground networks, substations, industrial plants, and EPC infrastructure projects. It is widely used in medium voltage distribution systems where mechanical protection, electrical stability, and long service life are essential.

With a robust steel tape armoured (STA/SSTA) structure, this cable provides strong resistance against external mechanical stress such as soil pressure, impact, and installation tension. The XLPE insulation ensures excellent thermal performance and low dielectric loss, making it suitable for continuous operation in demanding environments.

The aluminium conductor design offers a cost-effective and lightweight solution for large-scale power distribution projects, especially in utility networks and industrial EPC installations.

Typical applications include:

• Underground power distribution systems

• Substation connections

• Industrial factories and processing plants

• Infrastructure and EPC projects

• Mining and heavy-duty power systems

This medium voltage armoured cable is engineered for stable performance in harsh environments, helping reduce maintenance frequency and improve long-term system reliability.

Application Scenarios

Substation & Utility Networks

Used in primary and secondary distribution systems, ensuring stable and safe medium voltage transmission for urban and rural power grids.

Industrial Plants

Suitable for factories requiring continuous and reliable power supply, especially in environments with mechanical risk or heavy equipment operation.

Mining Industry

Mining projects require cables with high durability and protection. This cable offers:

• Strong abrasion resistance

• Mechanical impact resistance

• Moisture protection

• Flame-retardant performance

Common applications:

• Underground mining power supply

• Mobile equipment connections

• Heavy-duty electrical systems

Oil, Gas & Refinery

Designed for harsh industrial environments with:

• Chemical resistance

• UV resistance

• Stable performance under temperature variation

Used in:

• Petrochemical plants

• Refinery distribution systems

• Industrial processing facilities

Infrastructure & EPC Projects

Widely used in:

• Metro and tunnel systems

• Underground urban cable networks

• Large-scale EPC electrical installations

Construction

• ·  Conductor: Stranded aluminium conductor (Class 1 or Class 2)
• ·  Conductor Screen: Semi-conductive layer for electric field control
• ·  Insulation: XLPE with high thermal endurance and dielectric strength
• ·  Insulation Screen: Semi-conductive layer for uniform stress distribution
• ·  Metallic Screen: Copper tape screen (CTS) for grounding and fault current path
• ·  Armour: Stainless steel tape armour (SSTA) for mechanical protection and anti-rodent performance
• ·  Bedding: Protective layer separating armour and core assembly
• ·  Outer Sheath: PVC (ST2), moisture-resistant and abrasion-resistant
• ·  Design: Single-core, SSTA armoured medium voltage cable (8.7/15 kV)

Specification

Electrical & Mechanical Performance

• Operating temperature: -20°C to +90°C

• Short-circuit temperature: up to 250°C (max. 5 seconds)

• Minimum bending radius: 15 × overall diameter

• Suitable for direct burial and duct installation

• Long service life: up to 30 years under normal conditions

Engineering Features

• Optimized conductor design for stable current transmission

• Enhanced mechanical protection for underground installation

• Low dielectric loss for improved energy efficiency

• Strong resistance to moisture and soil corrosion

Engineering Advantages

This 8.7/15kV AL/XLPE armoured cable is built for demanding industrial and utility environments where reliability is critical.

Key advantages:

• Steel tape armouring provides high mechanical protection

• XLPE insulation ensures excellent thermal stability

• Suitable for direct underground installation

• Resistant to moisture, oil, and chemical exposure

• Stable performance under long-term electrical load

• Reduced maintenance cost over lifecycle

• Optional LSZH sheath available for safety-critical projects

It is widely selected by EPC contractors, utilities, and industrial engineering companies for medium voltage underground power networks.

Standards & Quality Assurance

Manufactured under strict international quality systems:

• ISO 9001 Quality Management System
• CE Certification
• IEC conductor classification standard (IEC 60228 equivalent)
• Optional compliance with BS / ASTM upon request

Quality testing includes:

• High-voltage withstand test
• Conductor resistance test
• Insulation integrity test
• Sheath mechanical inspection
• Third-party inspection (SGS / BV available)

Standards

• IEC: IEC 60502-2 / IEC 60228 / IEC 60332-1 / IEC 60332-3 / IEC 60754-1 / IEC 60754-2 / IEC 61034
• DIN VDE: DIN VDE 0276-620
• BS: BS 6622 / BS 7835
• NF: NF C 33-220
• AS/NZS: AS/NZS 1429.1
• ASTM: ASTM B3 / ASTM B8

Full test reports and certification documents can be provided for project approval and tender submission.

Frequently Asked Questions (FAQ)

Q1: What is the main advantage of XLPE insulation?
XLPE provides higher thermal resistance, better electrical performance, and longer service life compared to traditional PVC insulation.

Q2: Can this armoured cable be installed underground?
Yes, the steel tape armour (STA/SSTA) is specifically designed for direct burial and underground cable trench installation.

Q3: What is the service life of this 15kV cable?
Under proper installation and normal operating conditions, the service life can reach 25–30 years.

Q4: Is it suitable for industrial and mining projects?
Yes, it is widely used in industrial plants, mining operations, and heavy-duty power distribution systems.

Q5: How is cable size selected for a project?
Selection depends on load current, installation method, ambient temperature, and voltage drop requirements. Technical support is recommended for accurate sizing.

Q6: What temperature can the cable withstand?
It operates continuously up to 90°C, with short-circuit resistance up to 250°C for 5 seconds.

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