Prysmian S.p.a.

Marco Marelli

Paolo Boffi

Luigi Colla

Submarine electrical cable system () having a substantially circular cross-section and comprising: a first insulated core () and a second insulated core (); a three-phase cable () comprising three stranded insulated cores () the three-phase cable () being stranded with the first core () and the second core (); an armor () surrounding the first core (), the second core () and the three-phase cable ().

Submarine electrical cable and submarine cable operation method

The present invention relates to an accessory for high-voltage direct-current (HVDC) energy cables comprising: at least one element made from a crosslinked elastomeric polymer material, and at least one scavenging layer comprising zeolite particles. The zeolite particles are able to scavenge, very efficiently and irreversibly, the by-products deriving from the cross-linking reaction, so as to avoid space charge accumulation in the element during the accessory lifespan. Moreover, the zeolite particles can prevent the crosslinking by-products present in the element of a non-degassed accessory from migrating towards the insulating layer of the energy cable on which the accessory is mounted.

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Milan, Italy

Marco Marelli