AHXAMK-WP Cable

What is AHXAMK-WP Cable?

The AHXAMK-WP Cable is an engineered medium-voltage aluminium power distribution cable manufactured according to HD 620 Part 10 Section F, SFS 5636, and EN/IEC 60228 standards. Operating across rated voltages of 12/20 (24)kV and 19/33 (36)kV, it is engineered for primary electrical utility distribution, regional transformer feeder connections, and renewable generation collector networks requiring physical toughness and moisture protection.

The Nordic standard designation describes its specialized construction: A specifies stranded aluminium conductors; HX indicates Cross-Linked Polyethylene (XLPE) insulation surrounded by extruded semi-conducting screens; AMK denotes an aluminium/plastic laminate metallic screen serving as an impermeable radial water barrier bonded beneath a Polyethylene (PE) outer jacket; -W signifies certified dual longitudinal and radial watertightness; and P identifies the ploughed-installation profile suitable for direct mechanized cable-ploughing into soil without separate protective ducts. Supplied as a 3×1 triplex assembly at 12/20kV and in single-core or three-core formats at 19/33kV, the cable delivers stable power transmission in saturated ground and freshwater environments.

AHXAMK-WP Cable Construction

• Conductor: Class 2 watertight, circular, stranded aluminium conductor conforming to EN/IEC 60228.
• Conductor Screen: Extruded semi-conducting Cross-Linked Polyethylene (XLPE) compound ensuring a smooth electrical interface.
• Insulation: High-purity dry-cured Cross-Linked Polyethylene (XLPE) compound providing dielectric strength and continuous thermal endurance up to +90°C.
• Insulation Screen: Extruded semi-conducting Cross-Linked Polyethylene (XLPE) bonded directly to the primary dielectric layer.
• Metallic Screen & Radial Water Barrier: Aluminium/plastic laminate foil tightly bonded beneath the sheath, serving as an electrical screen and an impermeable radial moisture barrier.
• Outer Sheath: Heavy-duty, abrasion-resistant Polyethylene (PE) jacket formulated for tensile stress during direct ploughing.
• Cable Lay Up: Supplied as 3×1 core (triplex assembly) for 12/20kV, and available as single core or 3-core configurations for 19/33kV.
• Outer Sheath Colour: Weatherproof UV-resistant Black.

Applications

AHXAMK-WP medium-voltage cables are engineered for outdoor subsurface electrical grids subject to mechanical pulling forces and permanent moisture exposure:

• Direct Ploughing & Soil Burial: Mechanized cable ploughing directly into rocky, sandy, or unconditioned soil profiles without trench backfilling or ducting.
• Permanently Wet Soils & Freshwater Environments: Power routing through wetlands, swamps, river crossings, and sub-surface routes where standing fresh water occurs continuously.
• Regional & Public Utility Grids: Primary 20kV and 33kV distribution circuits linking regional distribution substations, ring main units (RMUs), and municipal supply lines.
• Renewable Energy Collector Networks: MV collection circuits connecting wind turbine base step-up transformers and central solar photovoltaic inverters to main substations.
• Cold-Climate Infrastructure: Sub-zero external power networks operating continuously in ambient temperatures down to -50°C.

Specifications & Dimensions

Huadong Cable Group manufactures AHXAMK-WP cables across 12/20 (24)kV and 19/33 (36)kV voltage ratings. The 12/20kV series is supplied in 3×1 core (triplex) configurations from 50mm² to 300mm², featuring a 5.5mm nominal XLPE insulation thickness, complete cable outer diameters ranging from 59mm to 86mm, and unit weights from 1,939 kg/km to 5,301 kg/km. The 19/33kV series includes single-core configurations from 400mm² to 1000mm² (outer diameters 46mm to 64mm; weights 2,193 kg/km to 4,722 kg/km) and three-core assemblies from 95mm² to 300mm² (outer diameters 76mm to 96mm; weights 3,332 kg/km to 6,166 kg/km), all utilizing an 8.0mm nominal XLPE insulation wall. Operating within a thermal envelope of -50°C to +90°C (conductor short-circuit thermal limit of +250°C for 5 seconds), the series supports pulling forces up to 20.0 kN by pulling-eye and up to 8.5 kN by pulling-stocking. Conductor DC resistance values at 20°C strictly conform to EN/IEC 60228 (from 0.641 Ω/km for 50mm² down to 0.0291 Ω/km for 1000mm²), with ampacities reaching up to 1,390A in air and 1,067A in ground for 1000mm² single-core conductors, and minimum bending radii fully conforming to HD 620 10-F and SFS 5636 specifications.

Standards

Design & Material Standards: HD 620 10-F, SFS 5636, EN/IEC 60228 Class 2
Watertight Integrity: Longitudinally and radially watertight (Aluminium/plastic laminate foil radial seal and watertight stranded conductor)
Electrical & Voltage Ratings: Voltage Rating Uo/U (Um): 12/20 (24)kV and 19/33 (36)kV; Conductor Max Operating Temp: +90°C; Short Circuit Limit (5s): +250°C
Thermal Installation Spectrum: Operating Range: -50°C to +90°C; Handling Min Temp: -20°C; Transport Min Temp: -40°C
Mechanical Performance: Pulling force up to 20.0 kN (pulling-eye); engineered for direct burial and mechanized ploughing
Environmental & Safety Compliance: Halogen-free (without fire protection, not CPR-classified); RoHS Directive 2015/65/EU, REACH Regulation EC 1907/2006, CE Marked

Frequently Asked Questions

Q: What does the “P” designate in the AHXAMK-WP cable model?
A: The “P” indicates that the cable structure is engineered for mechanized ploughing installation, featuring a reinforced polyethylene jacket and bonded aluminium laminate that withstand the mechanical tensile and shearing stresses of direct ground-laying machinery.

Q: How does the dual radial and longitudinal water barrier function in wet ground?
A: Longitudinal watertightness is provided within the Class 2 stranded aluminium conductor to prevent moisture travel along internal interstices, while the bonded aluminium/plastic laminate foil forms an impermeable radial cylinder that stops water vapor diffusion through the PE jacket into the XLPE dielectric.

Q: What is the core configuration difference between the 12/20kV and 19/33kV voltage classes?
A: The 12/20 (24)kV version is supplied as a 3×1 triplex assembly, whereas the 19/33 (36)kV rating is manufactured in single-core large-gauge sizes (up to 1000mm²) as well as three-core bundled configurations (up to 300mm²).

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

AHXAMK-WP Cable – Why Choose Huadong Cable?

Huadong Cable Group manufactures AHXAMK-WP medium-voltage power distribution cables in strict accordance with HD 620 10-F, SFS 5636, and EN/IEC 60228 specifications. Utilizing electrical-grade aluminium rod, our high-speed stranding machinery produces Class 2 circular conductors integrated with waterblocking agents to prevent longitudinal moisture propagation. On our catenary continuous vulcanization (CCV) lines, the semi-conducting conductor screen, high-cleanliness XLPE insulation, and semi-conducting insulation screen are extruded simultaneously in a triple-head die under dry nitrogen vulcanization, ensuring void-free interfaces and minimal partial discharge levels. Continuous tandem jacketing lines apply the aluminium/plastic laminate foil and tough polyethylene (PE) outer sheath with uniform bonding, providing mechanical toughness and water tightness.

Backed by more than 20 years of precision cable engineering expertise, Huadong Cable Group operates testing facilities accredited under ISO/IEC 17025 and certified to ISO 9001 and CE quality frameworks. Direct factory supply eliminates intermediary commercial markups, allowing us to provide competitive factory pricing, 100% routine testing (including high-voltage AC withstand, dielectric loss, and partial discharge verification) documented via Mill Test Certificates (MTC), continuous drum cuts packaged on heavy-duty ISPM 15 heat-treated export wooden reels, and dependable logistics for international electric utilities and renewable energy EPC contractors worldwide.