ARE4H5EXY 12/20kV Cable

What is ARE4H5EXY 12/20kV Cable?

The ARE4H5EXY 12/20kV Cable is a triplex-formation medium-voltage power distribution cable engineered in conformity with international standard IEC 60502-2, European harmonized specification HD 620, and utility standard ENEL Table DC 4390. Rated for 12/20 (24)kV electrical distribution networks, it provides a self-supporting cable design for aerial, indoor, and outdoor power installations where routing along existing structures or catenary spans without dedicated supporting trays is necessary.

The cable features three individually insulated and sheathed phase cores twisted around a central high-tensile aluminium messenger wire (50Y). Each phase core comprises a Class 2 compacted stranded circular aluminium conductor, extruded semi-conductive screens, DIX 8 grade XLPE dielectric insulation, a longitudinally bonded aluminium tape metallic screen, and a tough DMP5 Medium Density Polyethylene outer jacket. This configuration provides mechanical self-support, radial moisture containment, and halogen-free fire safety (IEC 60754) across aerial frameworks, industrial walkways, channels, and masonry walls.

ARE4H5EXY 12/20kV Cable Construction

• Conductor: Class 2 compacted stranded circular aluminium conductor.
• Conductor Screen: Extruded semi-conductive XLPE compound for uniform electric stress control.
• Insulation: Cross-Linked Polyethylene (XLPE) compound (DIX 8) delivering dielectric performance up to a continuous operating temperature of 90°C.
• Insulation Screen: Extruded semi-conductive XLPE compound bonded directly to the dielectric layer.
• Metallic Screen: Aluminium tape longitudinally applied to each core, functioning as an electrical earth shield and radial moisture barrier.
• Outer Sheath: Medium Density Polyethylene (MDPE) compound (DMP5) providing resistance against mechanical impact, abrasion, and environmental weathering.
• Outer Sheath Colour: Light Grey.
• Central Messenger & Lay Up: Triplex formation of three phase cores stranded around a central aluminium messenger wire (50mm²) that provides mechanical self-support.

Applications

ARE4H5EXY 12/20kV medium-voltage cables are engineered for primary electrical energy distribution across diverse indoor, outdoor, and structural aerial installations:

• Aerial & Self-Supporting Overhead Routing: Overhead utility distribution spans supported by the central aluminium messenger wire between poles, towers, and pylons.
• Masonry & Metal Structures: Fixed surface installation directly along civil concrete walls, brick masonry, and industrial steel building structures.
• Industrial Walkways, Channels & Racks: Power distribution routed through open walkways, concrete channels, service galleries, and cable brackets.
• Pipes & Conduit Systems: Pulled through outdoor and indoor conduit systems, tunnels, and raceways.
• Substation & Industrial Complex Interconnections: Secondary sub-transmission and plant transformer feeds requiring self-supporting cable architecture.

Specifications & Dimensions

Huadong Cable Group manufactures ARE4H5EXY 12/20kV cables across triplex phase cross-sections from 35mm² to 150mm² assembled around a standardized 50mm² aluminium messenger wire (35+50Y, 50+50Y, 95+50Y, and 150+50Y mm²). Rated for 12/20 (24)kV, the series incorporates a standardized minimum insulation thickness of 4.3mm on all cores, with complete cable nominal outer diameters ranging from 54mm (35+50Y) up to 69mm (150+50Y) and nominal unit weights spanning 1,600 kg/km to 3,100 kg/km. Operating under a maximum continuous conductor temperature of 90°C (short-circuit limit of 250°C for 5 seconds) and a metallic screen temperature limit of 75°C (short-circuit limit of 150°C), maximum conductor DC resistance values at 20°C strictly conform to international standards (0.868 Ω/km for 35mm², 0.641 Ω/km for 50mm², 0.320 Ω/km for 95mm², and 0.206 Ω/km for 150mm²). Continuous current carrying capacity reaches 140A for 35mm² and 170A for 50mm², while maintaining compact minimum installation bending radii between 500mm and 660mm in strict accordance with IEC 60502-2, HD 620, and ENEL Table DC 4390 specifications.

Standards

Design & Material Standards: IEC 60502-2, HD 620, ENEL TABLE DC 4390
Conductor & Messenger Specification: Class 2 compacted stranded aluminium phase conductors with central aluminium messenger wire
Insulation & Sheath Compounds: XLPE compound DIX 8; MDPE outer sheath compound DMP5
Halogen Content: Halogen-free according to IEC 60754
Voltage & Thermal Ratings: Voltage: 12/20 (24)kV; Max conductor temp: 90°C (short circuit: 250°C); Max screen temp: 75°C (short circuit: 150°C)
Regulatory Compliance: RoHS Directive 2015/65/EU, REACH Regulation EC 1907/2006, CE Marked

Frequently Asked Questions

Q: What is the primary engineering purpose of the central aluminium messenger wire (50Y)?
A: The central 50mm² aluminium messenger wire acts as a structural load-bearing member that absorbs installation tension and wind/sag loads during overhead aerial routing, eliminating mechanical tensile stress on the three electrical phase conductors.

Q: How does the longitudinally applied aluminium tape on each core function?
A: The longitudinally applied aluminium tape functions as an individual metallic screen to equalize radial electric stresses and convey ground fault currents, while also acting as a radial moisture barrier beneath the MDPE sheath.

Q: What installation environments are suitable for ARE4H5EXY?
A: It is suitable for indoor and outdoor installations, including free air, overhead spans, surface mounting along masonry walls and steel structures, industrial walkways, open channels, and pipes.

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.

ARE4H5EXY Cable – Why Choose Huadong Cable?

Huadong Cable Group manufactures ARE4H5EXY 12/20kV medium-voltage cables in strict compliance with IEC 60502-2, HD 620, and ENEL Table DC 4390 specifications. Utilizing high-purity electrical-grade aluminium rod, our stranding machinery produces compacted circular Class 2 conductors and high-tensile aluminium messenger cores with uniform pitch and tight mechanical stability. On our catenary continuous vulcanization (CCV) lines, the semi-conductive conductor screen, high-cleanliness XLPE (DIX 8) insulation, and semi-conductive insulation screen are applied simultaneously in a triple-head die under dry nitrogen vulcanization, ensuring void-free interfaces and minimal partial discharge levels.

Backed by more than 20 years of precision cable engineering expertise, Huadong Cable Group operates testing laboratories accredited under ISO/IEC 17025 and production systems certified to ISO 9001 and CE frameworks. Direct factory manufacturing eliminates middleman trading 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 power utilities, overhead line projects, and EPC contractors worldwide.