XLPE Insulated Steel Wire Cable

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XLPE Insulated Steel Wire Cable
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The XLPE Insulated Steel Wire Armoured (SWA) Cable is a heavy-duty power transmission cable designed for medium-voltage electrical distribution networks.
Category
Aluminum Cable
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Description

The XLPE Insulated Steel Wire Armoured (SWA) Cable is a heavy-duty power transmission cable designed for medium-voltage electrical distribution networks.

 

Technical Specifications

 

Item

Specification

Cable Type

Single-core / Three-core XLPE insulated steel wire cable

Conductor Area

50–630 mm²

Insulation

XLPE, 8.0 mm thickness

Conductor

Compact stranded 8000-series aluminum alloy

Operating Temperature

90°C continuous

Armor

Galvanized Steel Wire Armour (SWA)

Sheath

PVC / HDPE

Diameter Range

38.8–64.3 mm (single-core), 79.7–116.1 mm (three-core)

Weight Range

2,610–17,870 kg/km

 

Cable Construction

 

Layer

Material / Function

Conductor

Aluminum alloy conductor for power transmission

Conductor Screen

Semi-conducting layer for stress control

Insulation

XLPE insulation for thermal and electrical performance

Insulation Screen

Semi-conducting layer via CCV process

Metallic Screen

Copper tape/wire protection layer

Bedding

Polypropylene tape for moisture protection

Armouring

Galvanized steel wire for mechanical strength

Outer Sheath

PVC/HDPE protection against abrasion, UV, oil, moisture

 

Key Advantages

 

Thermal Endurance: Continuous conductor operation at 90°C, emergency overload up to 130°C, and short-circuit limit at 250°C (5s max).

Direct-Burial Mechanical Strength: Galvanized Steel Wire Armor (SWA) withstands crushing forces >1,500 N/10cm and tensile pulling up to 70 N/mm².

Low Dielectric Loss: Insulation power factor (tan δ) <0.001 at 20°C reduces continuous operational energy loss across long-distance distribution lines.

Subsurface Chemical Resistance: Impermeable outer sheath prevents moisture ingress, soil corrosion, and microbial degradation in pH 4–9 environments.

 

Custom Options

 

Choice of ST1/ST2 PVC, ST8 LSZH (IEC 60332-3 category flame retardancy), or anti-termite/rodent additive formulations.
Optional longitudinal swelling tapes and yarns for permanently flooded duct applications.
Insulation thickness engineered for systems from 0.6/1 kV up to 18/30 kV.
Custom outer sheath coloring, sequential meter inkjet marking, and tailored cut lengths from 500m to 2,000m.

 

Quality Control

 

CCV Line Precision: Continuous Vulcanization lines equipped with X-ray thickness and eccentricity gauges to ensure zero internal voids.

Planetary Armoring: Controlled-tension wire stranding ensures >90% armor coverage without loose wire overlap.

Routine Testing: Every cable reel undergoes inline spark testing and AC high-voltage withstand testing before shipment.

Complete Traceability: Full Material Test Reports (MTR) compliant with EN 10204 3.1 are issued with every shipment batch.

 

Commercial Terms

 

MOQ: Base MOQ starts at 1,000 meters per conductor cross-section.

Export Packaging: Heat-treated wooden drums or steel-framed timber reels fully compliant with ISPM 15 standards.

Production Lead Time: 15 to 25 calendar days for standard specifications upon contract confirmation.

Warranty: 24-month factory warranty backed by individual drum serial number tracking and QA archives.

 

Factory Compliance

 

Global Standard Adherence: Fully compliant with IEC 60502-1, BS 5467, BS 6724, and DIN VDE 0276.

Management Certifications: Operating under ISO 9001, ISO 14001, and ISO 45001 certified quality and safety systems.

Scale & Capacity: 150-acre manufacturing facility with 20+ specialized extrusion and armoring lines ensuring stable lead times.

 

Cable Structure

product-835-290

 

FAQ 

Q: Is the longitudinal swelling tape option compatible with the standard 90°C insulation rating?

A: Yes, the swelling tape option for flooded duct applications is fully compatible with the standard 90°C XLPE insulation.

Q: Does the emergency overload rating of 130°C reduce the cable's expected service life if used repeatedly?

A: Yes, each emergency overload event at 130°C is limited to a maximum cumulative duration of 100 hours over the cable's service life per IEC 60502-2 guidelines.

Q: What documents are provided to verify cable quality before shipment?

A: Each shipment can be supplied with material test reports, routine test records, and inspection documents including conductor, insulation, and armor performance data.

Q: What total pulling force does the 70 N/mm² tensile rating translate to for a typical 240mm² conductor?

A: For a 240 mm² conductor, the 70 N/mm² rating translates to approximately 16,800N total allowable pulling force, calculated by multiplying the rated stress by the conductor's cross-sectional area.

Q: What installation environments are suitable for this armored cable?

A: The cable is designed for direct burial, underground ducts, and areas requiring resistance against moisture, soil corrosion, and mechanical impact.

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