35‑500kV High Voltage Copper Conductor Cable XLPE Underground Industrial Power Transmission Cable

Introduction

This series of high‑voltage power cables covers voltage levels from 35kV up to 500kV, mainly built with compact‑stranded high‑conductivity copper conductors and cross‑linked polyethylene (XLPE) insulation layers. Designed for long‑distance bulk power delivery, urban main grid networking, large industrial park power supply and new energy base transmission projects, it adapts stably to underground laying, tunnel installation and other complex construction environments. Every cable is produced following international power engineering standards, with strict partial discharge and aging resistance testing to ensure long‑term safe operation under heavy‑load conditions.

Specification

Product Structure

• Conductor: Compact round stranded copper wire, low resistance, high current‑carrying capacity
• Inner semi‑conductive shield: Smooth‑layer shielding to homogenize internal electric field
• XLPE Insulation: Cross‑linked polyethylene core insulation, heat‑resistant and high‑insulation performance
• Outer semi‑conductive shield: Controls external electric field and reduces partial discharge risk
• Metal sheath: Corrosion‑resistant metal layer for mechanical protection and leakage prevention
• Outer Sheath: HDPE anti‑aging jacket, waterproof, pressure‑resistant and wear‑resistant

Application Scope

This high‑voltage XLPE cable is widely used in national main power grid construction, urban high‑voltage power transmission lines, large‑scale industrial zone power supply, wind farm & photovoltaic power station outgoing transmission, cross‑regional power delivery projects and key infrastructure power supporting projects.

Core Advantages

• Stable Conductivity & Low Power Loss
   
  High‑purity compact copper conductor effectively cuts down transmission loss, suitable for long‑distance high‑voltage power delivery with continuous heavy‑load running.
• Reliable Insulation Performance
   
  XLPE cross‑linked insulation keeps stable electrical properties under high temperature and high‑voltage conditions, avoiding insulation breakdown during long‑term service.
• Strong Environmental Adaptability
   
  Anti‑corrosion, waterproof and pressure‑resistant outer sheath copes with underground burial, wet soil, chemical‑polluted zones and outdoor harsh weather.
• Long Service Life & Low Maintenance
   
  Strict quality control on shielding and insulation layers, partial discharge strictly limited, service life over 30 years with low later‑stage maintenance cost.
• Standard‑Compliant Quality
   
  Produced according to IEC, GB and other mainstream high‑voltage cable standards, with complete test reports and third‑party certification.

Quality Assurance & Certification