E-2XHCJ2Y Cable

What is E-2XHCJ2Y Cable?

The E-2XHCJ2Y Cable is a single-core, copper conductor medium-voltage power distribution cable manufactured in strict adherence to international standard IEC 60502-2, conductor standard IEC 60228, and generally conforming to European harmonized document HD 620 10A. Operating across voltage classes of 6/10 (12)kV, 12/20 (24)kV, and 18/30 (36)kV, it provides primary electrical power transmission for distribution networks, substation transformers, and electrical power generation units.

The European designation defines each layer: E- indicates a power cable manufactured to European standards; 2X specifies dry-cured Cross-Linked Polyethylene (XLPE) dielectric insulation; H denotes extruded semi-conductive conductor and bonded insulation screening; C represents a metallic screen composed of concentric copper wires and equalizing copper tape; J designates longitudinal waterblocking provided by semi-conductive and non-conductive swellable tapes; and 2Y specifies a Medium Density Polyethylene (MDPE) outer protective sheath. Featuring AG2 impact resistance per EN 60364-5.51, abrasion and tear resistance to EN 60229-4.1, and UV resistance per ISO 4892-3, E-2XHCJ2Y provides moisture protection and physical durability for direct underground burial and duct installations.

E-2XHCJ2Y Cable Construction

• Conductor: Class 2 Stranded Annealed Copper conductor conforming to IEC 60228.
• Conductor Screen: Extruded semi-conductive material ensuring a uniform electrostatic stress transition.
• Insulation: High-purity Cross-Linked Polyethylene (XLPE) compound providing dielectric endurance up to +90°C continuous operating temperature.
• Insulation Screen: Extruded semi-conductive material (bonded type) creating an intimate molecular dielectric interface.
• Inner Longitudinal Waterblocking: Semi-conductive swellable tape applied beneath the metallic screen.
• Metallic Screen: Concentric plain copper wires bound with an equalizing copper tape to conduct earth-fault currents safely.
• Outer Longitudinal Waterblocking: Swellable tapes applied over the metallic screen.
• Outer Sheath: Heavy-duty, UV-resistant Medium Density Polyethylene (MDPE) compound.
• Sheath Colour: Available in Red or Black.

Applications

E-2XHCJ2Y medium-voltage waterproof copper cables are engineered for primary electrical energy distribution across demanding civil, utility, and heavy industrial installations:

• Direct Burial in Wet Ground: Subterranean installations in waterlogged soils, flood plains, and damp trenches, utilizing dual swellable tapes to prevent longitudinal water travel.
• Buried Cable Ducts & Pipes: Pulled through concrete duct banks, underground conduit systems, and road crossings where low jacket friction and tensile strength are critical.
• Power Distribution Networks: Primary medium-voltage feeder circuits connecting municipal substations, switching stations, and step-down power transformers.
• Power Generation Units & Renewables: Main collection circuits linking renewable generation units (wind farms and centralized solar PV plants) to step-up substations.
• Heavy Industrial Facilities: Subterranean power distribution lines across chemical facilities, refineries, paper mills, and automated manufacturing complexes.

Specifications & Dimensions

Huadong Cable Group manufactures E-2XHCJ2Y single-core copper cables across 6/10 (12)kV, 12/20 (24)kV, and 18/30 (36)kV voltage classes with conductor cross-sectional areas from 50mm² up to 630mm² (50, 70, 95, 120, 150, 185, 240, 300, 400, 500, and 630mm²) and copper screen cross-sections of 16mm², 25mm², or 35mm². Nominal insulation thicknesses are calibrated per voltage rating: 3.40mm (2.96mm min) for 6/10kV, 5.50mm (4.85mm min) for 12/20kV, and 8.00mm (7.10mm min) for 18/30kV. Across the series, nominal overall outer diameters range from 22mm to 46mm for 6/10kV, 26mm to 51mm for 12/20kV, and 32mm to 56mm for 18/30kV, with nominal cable weights spanning 850 kg/km up to 7,500 kg/km and maximum permissible pulling tensions up to 31,500 N. Operating across an ambient temperature range of -20°C to +60°C, a permissible continuous conductor operating temperature of +90°C, and a short-circuit limit of +250°C for up to 5 seconds, maximum copper conductor DC resistance at 20°C ranges from 0.387 Ω/km (50mm²) down to 0.0283 Ω/km (630mm²). Continuous current carrying capacities reach up to 1,030A in air (30°C) and 850A in ground (20°C), supported by a standard minimum bending radius of 15 times the overall diameter, fully adhering to IEC 60502-2, IEC 60228, and HD 620 10A specifications.

Standards

Design & Manufacturing Standards: IEC 60502-2, IEC 60228 Class 2, Generally to HD620 10A
Mechanical & Environmental Resistance: UV Resistant: ISO 4892-3; Abrasion and Tear Resistant: EN 60229-4.1; Impact rated to AG2: EN 60364-5.51
Halogen Content: Halogen free according to IEC 60754
Voltage & Test Ratings: Voltage Rating Uo/U (Um): 6/10 (12)kV, 12/20 (24)kV, 18/30 (36)kV; AC Test Voltages (5 mins): 21kV (6/10kV), 42kV (12/20kV), 63kV (18/30kV)
Thermal Ratings: Temperature Range: -20°C to +60°C; Permissible Conductor Operating Temp: +90°C; Permissible Short Circuit Temp (up to 5s): +250°C
Bending Performance: Minimum Bending Radius: 15 × overall diameter
Regulatory Compliance: RoHS Directive 2015/65/EU, REACH Directive EC 1907/2006, CE Marked

Frequently Asked Questions

Q: What is the primary construction difference between E-2XHCJ2Y and E-2XHC2Y cables?
A: E-2XHCJ2Y incorporates dual longitudinal waterblocking swellable tapes (an inner semi-conductive swellable tape below the screen and an outer swellable tape above it) indicated by the letter “J”, providing longitudinal moisture blocking that is absent in standard E-2XHC2Y cables.

Q: How do the swellable tapes function in the event of outer sheath damage?
A: Upon contact with water, the swellable tapes absorb moisture and expand, forming a continuous physical gel barrier that prevents water from migrating longitudinally along the metallic screen interface.

Q: Why is an MDPE outer sheath chosen over a PVC outer jacket?
A: The Medium Density Polyethylene (MDPE) outer sheath provides higher surface hardness, superior abrasion and tear resistance (EN 60229-4.1), AG2 impact protection (EN 60364-5.51), and lower moisture vapor transmission compared to PVC, making it well suited for direct burial and duct pulling.

Q: What standard delivery lead time does Huadong Cable offer for international project orders?
A: Our standard manufacturing lead time ranges from 15 to 25 working days depending on order volume, voltage rating, and custom drum lengths, backed by prioritized production scheduling for urgent utility projects.

E-2XHCJ2Y Cable – Why Choose Huadong Cable?

Huadong Cable Group manufactures E-2XHCJ2Y medium-voltage waterproof copper power cables in strict compliance with IEC 60502-2, IEC 60228, and HD 620 10A specifications. Utilizing high-purity electrical-grade electrolytic copper rod, our drawing and stranding lines produce Class 2 stranded conductors that deliver tight geometric tolerances, optimal compaction, and minimum DC resistance. On our catenary continuous vulcanization (CCV) triple-extrusion lines, the semi-conductive conductor screen, high-cleanliness XLPE insulation, and bonded insulation screen are applied simultaneously in a pressurized dry nitrogen environment, eliminating microscopic air voids and keeping partial discharge levels well below international test limits.

Backed by more than 20 years of precision cable engineering expertise, Huadong Cable Group operates testing laboratories accredited under ISO/IEC 17025 and quality management 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 electric utilities, renewable EPCs, and industrial engineering contractors worldwide.