본문 바로가기

Power Generation

EHV Cable

Extra-High Voltage XLPE Cables

Cross-linked polyethylene (XLPE) is polyethylene (PE) whose chemical structure is modified by cross-linking reaction and has a high allowable operating temperature of 90℃ and excellent electrical properties. As the problem of water tree, which is considered as a biggest weakness, has been improved with the development of manufacturing technology, XLPE is now widely used as an insulation material for power cables of various voltages as well as extra-high voltage.

Manufacturing
Process

Extra-high voltage XLPE cables are manufactured through such processes as wire drawing, stranding, insulation, drying, etc. As the main process, insulation involves extruding and coating polyethylene with a crosslinking agent over the conductor, crosslinking at high temperature and high pressure, and cooling under pressure.

Taihan manufactures XLPE cables with an extra-high voltage VCV (Vertical Continuous Vulcanization) system at Dangjin factory tower, which is one of the tallest (160.5 m) in the world.

Types and Uses

66~500kV XLPE Insulated Cable: This underground cable is used to build power grids in cities and large industrial complexes.

Features
  • Excellent electrical properties
  • High dielectric strength and small dielectric constant compared to volume resistivity
  • Maximized transmission capacity with continuous maximum allowable temperature of 90℃ with excellent heat resistance and aging resistance
  • Prevention of environmental pollution due to leakage of insulating oil from OF cables
엣지 다운로드 크롬 다운로드