Prysmian has announced the successful completion of sea trials for the installation of a 500 kV HVDC MI1 HVDC cable at a depth of 2150 meters. This project is the first HVDC cable laying at such a depth, setting new standards in the market.
HVDC submarine cable installation tests
The cable is made of a high modulus synthetic fiber composite material, representing the next generation in cable technology. The innovative shielding solution, which is 50% lighter than steel underwater, together with the advanced Leonardo da Vinci cable-laying vessel, will facilitate the installation and maintenance of Terna’s Tyrrhenian Link at depths in excess of 2000 meters, a record in the history of power cables.
The success of these sea trials is the result of numerous laboratory tests, reaffirming Prysmian’s innovations. This light armor technology was used in 2019 for the Euboea-Andros-Tinos interconnection at 550 meters depth and in 2020 for the Crete-Peloponnese subsea project at 1000 meters.
The cable will be essential for the Tyrrhenian Link, a project valued at €1.7 billion awarded in 2021 by Terna SpA. Under the contract, Prysmian will design, supply and install more than 1,500 km of submarine cables supporting the energy exchange between Sardinia, Sicily and Campania, thus consolidating the energy hub of the Mediterranean.
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Source and photo: Prysmian
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