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Extruded HVDC submarine cable systems

Submarine cables up to 525 kV DC

The HVDC technology enables efficient long distance transmissions at high megawatt (MW) levels. This technology also allows a secure and stabilizing connection to existing electricity grids. An extruded HVDC cable has a copper or aluminum conductor, and utilizes a cross-linked polyethylene (XLPE) insulated system. The insulation system is specially designed for HVDC transmissions, and has electric properties to withstand high DC voltages. It is also a cost-efficient solution that is effectively manufactured in a cleanroom-classified environment that uses vertical extrusion line technology.

ABB has delivered HVDC submarine cable projects around the world that have resulted in interconnected regions and countries, electrified oil and gas platforms and massive wind farm projects being connected to shore. ABB has successfully commissioned a large number of extruded HVDC submarine cable systems, which are key elements in the developing vision of a DC grid that can utilize renewable energy generation more efficiently.

Why ABB?

  • ABB was the first to launch extruded HVDC submarine cable for 150 kV, in the Cross Sound project in 2002
  • ABB commissioned the world’s first extruded power-from-shore HVDC submarine cable, 80 kV Troll A
  • ABB is the turnkey supplier of the world’s longest extruded cable, NordBalt, which consists of two 300 kV submarine cables, each 400 km long, and underground cables routes comprising 40 km on the Swedish side, and 10 km on the Lithuanian side
  • Launched the record-breaking innovation – 525 kV extruded HVDC cable system

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