Single Core AWA Armoured Cable 12/20kV | N2XSRY – YJV72 | CU/XLPE/CTS/AWA/PVC
Medium Voltage XLPE Insulated | Copper Tape Screened | Aluminium Wire Armoured | PVC Sheathed
Product Overview
The N2XSRY – YJV72 (CU/XLPE/CTS/AWA/PVC) is a single core, medium voltage armoured power cable rated at 12/20(24) kV, designed for primary power distribution networks where superior mechanical protection is essential. This cable combines a high-conductivity copper conductor with cross-linked polyethylene (XLPE) insulation, copper tape screen (CTS), and aluminium wire armour (AWA) for robust protection against mechanical stresses .
Fully compliant with IEC 60502-2, this cable is suitable for indoor and outdoor installations, direct burial, underground ducts, and applications requiring protection against electromagnetic interference and physical impact
Key Features
- AWA Armouring – Aluminium wire armour provides excellent mechanical protection without the weight penalty of steel
- Copper Tape Screen (CTS) – 100% coverage for superior electromagnetic shielding
- XLPE Insulation – Rated for 90°C continuous operation, 250°C short-circuit
- IEC 60502-2 Certified – Fully compliant with international medium voltage standards
- Direct Burial Suitable – Robust construction for underground installation
Cable Code Cross-Reference
N2XSRY: European /IEC, Single core, XLPE insulated, copper screen, AWA, PVC sheath
YJV72: Chinese GB/T 12706 Single core, XLPE insulated, copper tape screen, AWA, PVC sheath
CU/XLPE/CTS/PVC/AWA/PVC: International Description Material-based description code
Construction Details
The cable features a carefully engineered construction for superior electrical and mechanical performance:
1. Conductor: Class 2 stranded compacted copper. circular compacted conductor for reduced diameter and enhanced conductivity. Meets IEC 60228
2. Conductor Screen:Extruded semi-conducting compound Bonded layer ensuring uniform electrical field distribution and preventing partial discharges
3. XLPE Insulation: Cross-linked Polyethylene Thermosetting insulation with high dielectric strength, rated 90°C continuous, 250°C short-circuit
4. Insulation Screen : Extruded semi-conducting compound Removable layer for stress control and field uniformity
5. Metallic Screen (CTS) :Copper tape (helically applied) Provides 100% coverage for electromagnetic shielding and fault current path. Optional: copper wire screen
6. Binder Tape :Non-hygroscopic material Holds components together and maintains circular shape
7. Inner Sheath (Bedding): PVC compound (ST2 grade) Separation layer between screen and armour, protects against moisture
8. Armour (AWA): Hard drawn aluminium wires Helically applied aluminium wires for mechanical protection. Lighter than steel with excellent impact resistance
9. Binder Tape: Non-hygroscopic material Secures armour wires in position
10. Outer Sheath: PVC compound (ST2 grade) UV resistant, flame retardant, black (red stripe optional)
Note: For 3-core cable configurations, steel wire armour (SWA) is typically used instead of AWA
Why Choose Aluminium Wire Armour (AWA)?
| Feature |
Benefit |
| Lightweight |
AWA is approximately 1/3 the weight of steel armour – reduces transportation and installation costs |
| Corrosion Resistant |
Aluminium naturally forms a protective oxide layer, superior to galvanized steel in many environments |
| Non-magnetic |
Eliminates hysteresis losses in single core cables (critical for AC applications) |
| Excellent mechanical protection |
Withstands impact, crushing, and tensile stresses during installation and service |
| Cost effective |
Aluminium is more affordable than copper while providing robust protection |
Standards & Certifications
| Standard |
Description |
| IEC 60502-2 |
Power cables with extruded insulation for rated voltages 6kV to 30kV |
| IEC 60228 |
Conductors of insulated cables (Class 2 stranded) |
| IEC 60332-1-2 |
Flame retardancy (single vertical cable) |
| IEC 60332-3-22 (Cat. A/C) |
Flame retardancy (bunched cables) – optional |
| GB/T 12706.2 |
Chinese equivalent standard for medium voltage cables |
Applications & Suitable Industries
- Power Distribution Networks – Primary and secondary distribution in 12/20kV systems, transformer feeders, substation connections .
- Industrial Facilities – Power supply to heavy machinery, motors, and control systems in manufacturing plants, refineries, and chemical facilities.
- Renewable Energy – Wind farm collection systems, solar park feeders, and battery storage connections.
- Infrastructure Projects – Airports, metro systems, tunnels, and data centers requiring robust mechanical protection .
- Utility Applications – Underground residential distribution (URD), direct burial in sandy or rocky soil conditions.
- Oil & Gas – Refinery and petrochemical plant power circuits (with appropriate chemical resistance specifications).
Installation Suitability
| Installation Type |
Suitability |
| Direct burial |
✅ Excellent – AWA provides mechanical protection |
| Underground ducts |
✅ Yes |
| Cable trays (indoor) |
✅ Yes |
| Aerial (on cleats) |
⚠️ Requires additional UV protection |
| Submerged/water |
✅ Yes – PVC sheath provides moisture protection |
Copper Tape Screen (CTS) Benefits
The copper tape screen (CTS) is a critical feature of this cable:
- 100% coverage – Superior to braided screens (typically 70-85% coverage)
- Effective EMI shielding – Protects nearby sensitive equipment from electromagnetic interference
- Fault current path – Provides a low-impedance path for earth fault currents
- Symmetrical electrical field – Ensures uniform stress distribution in the insulation system
According to industry specifications, the copper screen must have a minimum effective cross-sectional area based on conductor size
Mechanical & Installation Characteristics
| Parameter |
Value |
| Minimum bending radius (installation) |
15 × overall diameter |
| Minimum bending radius (fixed) |
12 × overall diameter |
| Maximum pulling tension |
50 N/mm² of conductor cross-section |
| Sidewall pressure limit |
3,000 N/m |
| Abrasion resistance |
Good (AWA + PVC sheath) |
| Impact resistance |
Excellent |
Available Configurations
| Option |
Available Choices |
| Conductor material |
Copper (Class 2) or Aluminum (Class 2) |
| Cross-sections |
35, 50, 70, 95, 120, 150, 185, 240, 300, 400, 500, 630, 800, 1000 mm² |
| Armour type |
AWA (Aluminium Wire Armour) – standard for single core |
| Screen type |
Copper tape (CTS) or copper wire screen (CWS) |
| Outer sheath color |
Black (standard) or red with stripe |
| Sheath material |
PVC (standard) or LSZH (upon request) |
| Packaging |
Steel or wooden reels |
Quality Assurance
- 100% electrical testing – Each length undergoes conductor resistance, partial discharge, and high voltage testing
- Third-party inspection – SGS, BV, TUV, or any designated inspector welcome
- Traceability – Full batch traceability with test reports
- Factory certification – ISO 9001:2015
Frequently Asked Questions (FAQ)
Q: Why is AWA (aluminium wire armour) specified instead of SWA (steel wire armour) for single core cables?
A: For single core AC cables, steel armour can create hysteresis and eddy current losses due to its magnetic properties. Aluminium wire armour (AWA) is non-magnetic, eliminating these losses while still providing excellent mechanical protection .
Q: What is the difference between N2XSRY and YJV72?
A: N2XSRY is the European/IEC designation, while YJV72 is the Chinese GB/T 12706 equivalent. Both describe the same construction: copper conductor, XLPE insulation, copper tape screen, PVC inner sheath, aluminium wire armour, and PVC outer sheath .
Q: What is the maximum conductor size available?
A: Up to 1000 mm² for copper conductor, and up to 800 mm² for aluminum conductor in single core construction .
Q: Can this cable be used for direct burial in rocky soil?
A: Yes. The AWA provides excellent mechanical protection against rocks and other underground hazards. However, sand bedding is still recommended as good practice .
Q: Is the cable flame retardant?
A: Yes. The PVC outer sheath meets IEC 60332-1-2 for single vertical cable flame retardancy. For enhanced flame retardancy (bunched cables), Cat. C to IEC 60332-3-22 is available upon request .
Q: What is the partial discharge level?
A: The cable is tested to ≤10 pC at 1.73 U₀ per IEC 60502-2 requirements, with some manufacturers offering ≤5 pC performance .
Q: Do you provide type test reports?
A: Yes. Complete IEC 60502-2 type test reports are available upon request, including thermal, electrical, and mechanical tests.
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Related Products
| Product |
Differences |
| N2XSY (YJV) |
Same construction without armour |
| N2XSRY (YJV72) |
Single core with AWA (this product) |
| N2XS2Y (YJV32) |
Three core with SWA (steel wire armour) |
| NA2XSRY (YJLV72) |
Aluminum conductor version |
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