E-2XHCY Cable

What is E-2XHCY Cable?

The E-2XHCY Cable is a single-core, copper conductor medium-voltage power distribution cable manufactured in strict adherence to international standard IEC 60502-2, European standard EN 60228, and generally conforming to harmonized specification HD 620 10A. Operating across standard rated voltage ratings of 6/10 (12)kV, 12/20 (24)kV, and 18/30 (36)kV, it provides primary electrical power transmission across regional distribution grids, primary step-down substations, power generation stations, and industrial processing complexes.

The standardized European designation defines each functional component: E- indicates a distribution power cable built to European harmonized specifications; 2X designates high-grade dry-cured Cross-Linked Polyethylene (XLPE) dielectric insulation capable of continuous +90°C operation; H denotes triple-extruded semi-conductive conductor screening (bonded type) and insulation screening (strippable type); C specifies a metallic earth-fault screen formed by concentric plain copper wires reinforced by an open helix copper counter-tape; and Y identifies the flame-retardant Polyvinyl Chloride (PVC) outer protective jacket. Built to withstand outdoor exposure, direct underground trenching, and indoor tray routing, the cable combines high dielectric endurance with flame retardancy to IEC/EN 60332-1-2 and long-term UV resistance.

E-2XHCY Cable Construction

• Conductor: Class 2 Stranded Annealed Copper conductor conforming to EN 60228.
• Conductor Screen: Extruded semi-conductive material (Bonded Type) ensuring radial electric field uniformity.
• Insulation: High-grade Cross-Linked Polyethylene (XLPE) compound providing dielectric endurance up to +90°C continuous operating temperature.
• Insulation Screen: Extruded semi-conductive material (Strippable Type) facilitating clean, smooth field stripping during jointing and termination.
• Metallic Screen: Concentric plain copper wires bound with an Open Helix Copper Tape Screen (available in 16mm², 25mm², or 35mm²).
• Outer Sheath: Heavy-duty, UV-resistant, flame-retardant Polyvinyl Chloride (PVC) compound.
• Sheath Colour: Available in Red or Black.

Applications

E-2XHCY medium-voltage copper power cables are engineered for high-capacity primary electrical energy distribution across diverse utility, industrial, and generation installations:

• Direct Burial in Ground: Heavy-duty subterranean trench installation directly in soil without auxiliary conduit protection.
• Buried Cable Ducts & Conduits: Pulled through concrete duct banks, underground pipe systems, and road crossings where mechanical flexibility and pulling durability are required.
• Power Distribution Networks & Substations: Primary feeder lines interconnecting electrical supply stations, regional switching substations, and step-down transformer rooms.
• Power Generation Units & Process Plants: Main interconnections linking thermal, hydroelectric, and renewable generation facilities to switchboards, plant process circuits, and distribution feeders.
• Indoor & Outdoor Cable Trays: Fixed routing across internal cable raceways, outdoor structural cable bridges, and industrial building risers requiring flame-retardant PVC jacketing.

Specifications & Dimensions

Huadong Cable Group manufactures E-2XHCY 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: 3.4mm for 6/10kV, 5.5mm for 12/20kV, and 8.0mm for 18/30kV. Nominal outer sheath thicknesses range from 1.7mm to 2.4mm for 6/10kV, 1.8mm to 2.5mm for 12/20kV, and 2.0mm to 2.7mm for 18/30kV, yielding overall outer diameters spanning 21.8mm to 46.5mm (6/10kV), 26.0mm to 50.7mm (12/20kV), and 31.4mm to 56.1mm (18/30kV), with unit weights from 897 kg/km up to 7,677 kg/km. Operating reliably across a maximum continuous conductor operating temperature of +90°C, an initial screen short-circuit threshold of +80°C, and a short-circuit limit of +250°C for 1 second, 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 in trefoil formation reach up to 1,153A in free air and 868A in ground for 630mm² cables, with conductor 1-second short-circuit current withstand up to 90.09 kA and copper screen short-circuit ratings of 3.2 kA (16mm²), 5.0 kA (25mm²), and 7.1 kA (35mm²). Standard minimum installation bending radius is 15 times the overall cable diameter in strict accordance with IEC 60502-2, EN 60228, and HD 620 10A standards.

Standards

Design & Manufacturing Standards: IEC 60502-2, EN 60228 Class 2, Generally to HD620 10A
Flame Retardancy & Environmental: Flame Retardant according to IEC/EN 60332-1-2; UV Resistant
Voltage & Electrical Ratings: Voltage Rating (Uo/U) (Um): 6/10 (12)kV, 12/20 (24)kV, 18/30 (36)kV
Thermal Ratings: Maximum conductor operating temp: +90°C; Maximum conductor short-circuit temp: +250°C; Initial screen short-circuit temp: +80°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 operational difference between E-2XHCY and E-2XHC2Y cables?
A: E-2XHCY utilizes an extruded Polyvinyl Chloride (PVC) outer sheath providing excellent flexibility and flame retardancy to IEC/EN 60332-1-2 for indoor and outdoor installations, whereas E-2XHC2Y features a Medium Density Polyethylene (MDPE) outer sheath engineered specifically for higher abrasion resistance and lower moisture permeation during direct burial.

Q: What is the installation advantage of the strippable insulation screen?
A: The strippable semi-conductive outer screen can be cleanly and smoothly peeled away from the XLPE dielectric without leaving conductive residues or requiring heat, eliminating the risk of scoring the insulation surface during jointing and termination.

Q: How does the open helix copper tape screen function over the concentric copper wires?
A: The open helix copper counter-tape secures the concentric copper wires, equalizes radial electrostatic charge across the insulated core, and ensures electrical continuity to carry earth-fault short-circuit currents safely to ground.

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.

E-2XHCY Cable – Why Choose Huadong Cable?

Huadong Cable Group manufactures E-2XHCY medium-voltage copper power cables in strict compliance with IEC 60502-2, EN 60228, and HD 620 10A specifications. Utilizing high-purity electrolytic copper rod, our precision drawing and stranding equipment produces Class 2 stranded conductors that ensure tight dimensional tolerance, optimal compaction density, and minimum electrical DC resistance. On our catenary continuous vulcanization (CCV) triple-extrusion lines, the bonded semi-conductive conductor screen, high-cleanliness XLPE insulation, and strippable semi-conductive insulation screen are applied simultaneously under pressurized dry nitrogen vulcanization, eliminating microscopic voids and keeping partial discharge levels well below standard 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, generation facilities, and industrial EPC contractors worldwide.