1.8/3kV NA2XH Cable

What is NA2XH 1.8/3kV Aluminium Cable?

The NA2XH 1.8/3kV Cable is a medium-voltage grade, unarmoured, low-smoke zero-halogen single-core power and auxiliary distribution cable rated at AC 1.8/3 (3.6)kV and DC 2.7/5.4kV, manufactured with a compacted stranded aluminium conductor, XLPE insulation, and a black LSZH thermoplastic outer sheath in accordance with IEC 60502-1 and IEC 60228 standards. It is designed for fixed installation to deliver electrical energy across commercial, public, and industrial power distribution systems.

Engineered for high-reliability energy transmission in fire-sensitive settings, the cable provides a lightweight, cost-efficient alternative to copper conductors while preventing toxic gas hazards during fire events. The flame-retardant outer sheath resists vertical fire spread per IEC 60332-1-2 and emits zero corrosive halogen acid gases, preserving visibility along escape pathways and protecting delicate electronic hardware from acid-induced damage; however, the cable is explicitly designated as not suitable for use in water.

NA2XH 1.8/3kV Cable Construction

• Conductor: Class 2 stranded plain aluminium circular compact conductor conforming to IEC 60228, providing uniform current distribution and high conductivity with reduced overall cross-sectional bulk.
• Insulation: Cross-Linked Polyethylene (XLPE) compound offering high dielectric strength, low mutual capacitance, a continuous +90°C conductor operating rating, and a +250°C short-circuit withstand.
• Bedding / Assembly: Direct extrusion compact single-core profile engineered for flexibility, simple termination, and easy pull-through during installation.
• Screen / Armour: Unarmoured single-core configuration optimized for low structural weight, reduced tray loading, and non-magnetic operation in AC power networks.
• Outer Sheath: Heavy-duty, flame-retardant Low Smoke Zero Halogen (LSZH) thermoplastic compound resistant to UV (ISO 4892), ozone (EN 50396), and industrial oils and greases.
• Sheath Colour: Black.

Applications

NA2XH 1.8/3 (3.6)kV aluminium power cables are engineered for primary electricity feeds and auxiliary power circuits in installations requiring higher voltage ratings, minimal dead-load weight, and strict non-toxic fire safety. The cable is not suitable for immersion or installation in standing water.

• Commercial Facilities & Public Venues: Main electrical distribution feeders in transit terminals, airport passenger concourses, hospitals, educational campuses, and shopping centers.
• Industrial Manufacturing Plants: High-amperage sub-main power feeds routed on ventilated trays, raceways, and industrial switchgear connection links.
• Substations & Power Generation: Interconnecting circuits in transformer bays, low/medium-voltage distribution rooms, and auxiliary solar/wind farm control buildings.
• Underground Ducts & Trenches: Trefoil formation laying in dry underground ducts, concrete service channels, or protected conduits at a depth of 0.5m (avoiding water accumulation).

Specifications & Dimensions

The NA2XH 1.8/3 (3.6)kV cable series covers single-core configurations across 16 standard conductor cross-sections from 16mm² up to 1000mm². Nominal overall outer diameters range from 14.0mm for 16mm² to 54.8mm for 1000mm², with corresponding nominal cable weights spanning from 240 kg/km up to 4,255 kg/km. Rated for AC 1.8/3 (3.6)kV and DC 2.7/5.4kV, it operates at a continuous maximum conductor temperature of +90°C, withstands short-circuit events up to +250°C, and requires a minimum bending radius of 15 times the overall diameter. Maximum conductor DC resistance values at 20°C range from 1.91 Ω/km (16mm²) down to 0.0291 Ω/km (1000mm²), while maximum 50Hz AC resistance values span 2.435 Ω/km to 0.037 Ω/km. When installed in trefoil formation (soil thermal resistivity 120°C·cm/W, 0.5m depth, 15°C ground / 25°C air), current-carrying capacity ratings reach up to 767A laid in ground, 651A laid in ducts, and 966A laid in free air, fully adhering to IEC 60502-1 dimensional and performance tolerances.

Standards

Design & Testing Standards: IEC 60502-1, IEC 60228
Flame Retardancy: IEC 60332-1-2 (Single cable vertical flame propagation)
Halogen-Free & Smoke Emission: IEC 60754-1/2 (Zero Halogen Acid Gas), IEC 61034-1/2 (Low Smoke Density)
Environmental & Chemical Resistance: ISO 4892 (UV Resistant), EN 50396 (Ozone Resistant), Resistant to oils and greases
Voltage & Thermal Ratings: AC Uo/U (Um): 1.8/3 (3.6)kV, DC: 2.7/5.4kV; Max Conductor Temp: +90°C; S.C. Temp: +250°C; Min Bending Radius: 15 × overall diameter
Regulatory Compliance: European Regulation EN 50575 (CPR Compliant), Low Voltage Directive 2014/35/EU, CE Marked, RoHS Directive 2015/65/EU, REACH Directive EC 1907/2006

Frequently Asked Questions

Q: What engineering advantages are provided by circular compact aluminium conductors?
A: The circular compacting process draws stranded aluminium wires through shaping dies to eliminate interstitial gaps between strands; this reduces the overall conductor diameter, decreases jacket material consumption and weight, lowers skin effect losses, and enhances bending handling during installation.

Q: Can NA2XH 1.8/3kV cable be installed directly in wet ground or underwater?
A: No, the datasheet explicitly specifies that this cable is “Not suitable for use in water”; because it lacks a radial metal moisture barrier, continuous water ingress can degrade the electrical insulation system over time, meaning dedicated water-blocked cables must be specified for submerged conditions.

Q: Why is trefoil formation recommended when installing single-core cables?
A: Installing three single-core cables in a symmetrical, touching triangular (trefoil) configuration balances the magnetic fields produced by alternating three-phase currents; this cancels out phase inductive reactance and prevents unwanted eddy current heating in surrounding metallic structures.

Q: What payment terms does Huadong Cable accept for international industrial export orders?
A: We accept standard international commercial payment terms, including Telegraphic Transfer (T/T, with 30% advance deposit and 70% against shipping documents) and 100% Irrevocable Letter of Credit (L/C) at sight.

1.8/3kV NA2XH Cable – Why Choose Huadong?

Huadong Cable Group manufactures NA2XH 1.8/3 (3.6)kV aluminium power cables in strict conformity with IEC 60502-1 and IEC 60228 specifications, verified through systematic routine and type testing in ISO/IEC 17025 accredited facilities. Using high-conductivity electrical-grade aluminium drawn and compacted into Class 2 circular stranded conductors, our modern extrusion lines apply precision XLPE insulation to guarantee high dielectric strength, low mutual capacitance, and continuous thermal stability up to +90°C. Finished with an advanced halogen-free, UV-resistant, and oil-resistant LSZH outer jacket, our cables deliver reliable fire safety, zero toxic acid emissions, and long service life in critical environments.

With more than 20 years of dedicated cable manufacturing expertise, Huadong Cable Group operates advanced multi-wire compacting lines, continuous vulcanization machinery, and zero-halogen compounding facilities certified to ISO 9001, CE, CPR (EN 50575), RoHS, and REACH protocols. By supplying directly from our manufacturing base, we offer competitive factory pricing, 100% Mill Test Certificates (MTC) tested in accredited testing facilities, customized continuous drum lengths packaged on ISPM 15 heat-treated export wooden reels, and seamless door-to-port logistics for EPC contractors and infrastructure builders worldwide.