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1. (WO2018122572) ELECTRIC CABLE HAVING A PROTECTING LAYER

Pub. No.:    WO/2018/122572    International Application No.:    PCT/IB2016/058011
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Wed Dec 28 00:59:59 CET 2016
IPC: H01B 7/288
H01B 7/02
H01B 3/44
Applicants: PRYSMIAN S.P.A.
Inventors: BAREGGI, Alberto
MAIOLI, Paolo
FERRARI, Armando Michele
Title: ELECTRIC CABLE HAVING A PROTECTING LAYER
Abstract:
An electric cable comprising: a cable core having a radius and comprising an electric conductor and an insulating system; a first metal layer in radially outer position with respect to the cable core; and a semiconductive protecting layer between the cable core and the first metal layer. The insulating system comprises an insulating layer based on a propylene copolymer and the protecting layer is made of non-expanded material and has a thickness of from 0.5% to 3% the radius of the cable core. The cable is apt to safely operate at thermal cycles of from 20°C to at least 90°C (for example up to 130°C or more), with substantially no deformation of the metal layer and of the overall cable structure.