AXLJ-F 12/20kV Cable

What is AXLJ-F 12/20kV Cable?

The AXLJ-F 12/20kV Cable is a specialized single-core and three-core medium-voltage power distribution cable manufactured in accordance with HD 620 S2: 2010 Part 10 Section F/M standards. Operating at a rated voltage of 12/20 (24)kV, it is engineered for primary utility grids, transformer substations, industrial facilities, and renewable energy installations requiring fixed outdoor installation.

The standard Nordic designation reflects its construction: A specifies a round stranded aluminium conductor; X represents Cross-Linked Polyethylene (XLPE) dielectric insulation and extruded semi-conductive screens; L denotes a metallic screen composed of copper wires bound with a counter-spiral; J designates a durable Polyethylene (PE) outer protective sheath; and -F certifies the incorporation of a semiconductive swelling tape barrier engineered for longitudinal waterproofing and moisture diffusion resistance. This structural combination delivers UV resistance, radial moisture blocking, and long-term dielectric performance in exposed outdoor environments.

AXLJ-F 12/20kV Cable Construction

• Conductor: Threaded round waterproof aluminium conductor engineered to restrict longitudinal water travel.
• Conductor Screen: Semiconductive solid-capped Cross-Linked Polyethylene (XLPE) compound.
• Insulation: High-grade Cross-Linked Polyethylene (XLPE) compound providing dielectric strength up to +90°C continuous operating temperature.
• Insulation Screen: Semiconductive solid-cured Cross-Linked Polyethylene (XLPE) bonded directly to the dielectric layer.
• Watertight Layer: Semiconductive tape that also serves as a diffusion barrier in long waterproof installations.
• Metallic Screen: Semi-conducting bands and annealed copper wires bound with a counter-spiral.
• Outer Sheath: UV Resistant Polyethylene (PE) compound providing protection against mechanical abrasion and solar radiation.
• Sheath Colour: Industrial Black.

Applications

AXLJ-F 12/20kV medium-voltage cables are engineered for outdoor power transmission across civil, municipal, and industrial infrastructure:

• Fixed Outdoor Power Distribution: Primary medium-voltage feeder circuits connecting municipal substations, switching stations, and step-down transformers.
• Wet Soils & Saturated Ground: Direct burial in damp soils and subterranean routes subject to standing groundwater, utilizing the threaded waterproof conductor and diffusion barrier tape.
• Underground Ducts & Cable Trenches: Installation inside concrete raceways, utility banks, and duct systems withstanding pulling friction and moisture.
• Renewable Energy Collector Networks: MV collection circuits linking wind turbine towers and solar PV inverter stations to regional grid substations.
• Industrial Manufacturing Plants: External primary power feeds for chemical plants, refineries, and heavy production plants.

Specifications & Dimensions

Huadong Cable Group manufactures AXLJ-F 12/20 (24)kV cables across single-core configurations from 50/16mm² up to 630/35mm² and three-core configurations from 50/16mm² up to 240/35mm². Rated for 12/20 (24)kV with a maximum continuous conductor operating temperature of +90°C and a maximum short-circuit temperature limit of +250°C, single-core constructions feature nominal conductor diameters from 29mm to 52mm and nominal weights ranging from 660 kg/km to 3,050 kg/km. Three-core assemblies feature nominal conductor diameters from 55mm to 79mm and nominal weights between 1,840 kg/km and 4,360 kg/km. All structural parameters, dimensional tolerances, and electrical characteristics strictly conform to the harmonized standard HD 620 S2: 2010 Part 10 Section F/M.

Standards

Design & Material Standards: HD 620 S2: 2010 Part 10 Section F/M
Regulatory Compliance: European Regulation EN 50575 (CPR Compliant)
Electrical & Thermal Ratings: Voltage Rating Uo/U: 12/20 (24)kV; Maximum Operating Temperature: 90°C; Maximum Short-Circuit Temperature: 250°C
Waterblocking Performance: Threaded round waterproof aluminium conductor; Semiconductive tape diffusion barrier
Environmental & Safety Compliance: UV Resistant PE Outer Sheath; RoHS Directive 2015/65/EU, REACH EC 1907/2006, CE Marked

Frequently Asked Questions

Q: What is the function of the semiconductive tape diffusion barrier in AXLJ-F cables?
A: The semiconductive tape serves a dual purpose: it maintains electrical contact between the insulation screen and the metallic copper screen while functioning as a diffusion barrier to block moisture migration along the cable length.

Q: What advantage does the threaded round waterproof aluminium conductor provide?
A: The conductor strands incorporate waterblocking compounds that prevent water travel along internal strand interstices, protecting the core if the outer jacket is damaged.

Q: Why is a UV-resistant polyethylene (PE) outer sheath utilized?
A: The black UV-resistant PE outer sheath provides mechanical toughness, tear resistance, and protection against solar radiation and environmental cracking in outdoor installations.

Q: What commercial payment terms does Huadong Cable accept for international 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.

AXLJ-F 12/20kV Cable – Why Choose Huadong Cable?

Huadong Cable Group manufactures AXLJ-F 12/20 (24)kV medium-voltage cables in strict compliance with HD 620 S2: 2010 Part 10 Section F/M standards. Utilizing electrical-grade aluminium rod, our stranding lines manufacture threaded circular conductors integrated with waterblocking elements to ensure longitudinal watertightness. On our catenary continuous vulcanization (CCV) lines, the semiconductive solid-capped conductor screen, high-purity XLPE insulation, and solid-cured insulation screen are applied simultaneously under dry nitrogen vulcanization, ensuring void-free interfaces and minimal partial discharge levels.

Backed by more than 20 years of precision cable manufacturing expertise, Huadong Cable Group operates testing facilities accredited under ISO/IEC 17025 and quality management systems certified to ISO 9001 and CE frameworks. Direct factory supply eliminates intermediary agent markups, allowing us to provide competitive factory pricing, 100% routine electrical and spark testing verified by certified 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 EPC contractors worldwide.