Prysmian S.p.A.

An HV, EHV or MV power cable (10) comprising at least one insulated conductive core, a metallic screen (14) surrounding the at least one insulated conductive core (12), a sheath (16) surrounding the metallic screen (14), and at least one optical fiber element (40). The optical fiber element(s) (40) is/are embedded in and surrounded by the sheath (16) in a position that is radially outward from and spaced from the metallic screen (14), helically or SZ stranded around the metallic screen (14). The optical fiber element(s) is/are dielectric and comprise(s) at least one tube surrounding one or more optical fibers, and an element jacket surrounding the tube(s). A process for manufacturing the HV, EHV or MV power cable.

The present disclosure relates to a cable termination (1) comprising:- a base (4);- a top part (9);- a tubular insulator body (13) extending according to a longitudinal axis (A1) between the base (4) and the top part (9);- a temperature sensor device (2) for measuring temperatures along the cable termination (1), comprising at least one optical fiber (12) wound around the tubular insulation body (13); and- an electrically insulating outer sheath (5) covering the tubular insulator body (13) and the at least one optical fiber (12) wound thereon,wherein the at least one optical fiber (12) comprises a helically wound first length (12'), extending from the base (4) to the top part (9), a helically wound second length (12"), extending from the top part (9) to the base (4), and a loop portion (12‴) near the top part (9), where the first length (12') joins the second length (12"), wherein the first length (12') and the second length (12") are parallelly arranged side by side spaced with an axial spacing (Δz), forming subsequent couples of coils axially spaced with an axial pitch (Δp).

An optical fiber cable (10) comprising an optical core (12) comprising at least one tube (14) containing at least one optical fiber (16). At least one protecting layer (42, 44) surrounding the optical core (12) is made of an elastomeric polymer material. The elastomeric polymer material has a density of from 1.2 to 1.4 g/cm<3>. The elastomeric polymer material has Shore A hardness of at most 70.

A power cable comprising at least one electrical conductor and an electrically insulating system comprising: an inner semiconducting layer surrounding the electrical conductor, an electrically insulating layer surrounding the inner semiconducting layer, an outer semiconducting layer surrounding the electrically insulating layer. At least the electrically insulating layer is made of a thermoplastic polymer material comprising at least one copolymer of ethylene with at least one C₄-C₈ alpha-olefin comonomer, wherein: the at least one C₄-C₈ alpha-olefin comonomer is present in the copolymer in an amount of from 1 to 10 mol%, for example from 1.5 to 5 mol%; the copolymer has a density of from 0.880 g/cc to 0.930 g/cc, for example from 0.900 g/cc to 0.925 g/cc; the copolymer has a melting profile, determined by Differential Scanning Calorimetry (DSC), which includes a melting peak, corresponding to the maximum melting temperature of the melting profile, which defines a melting enthalpy up to 50% of the overall melting enthalpy. Such thermoplastic polymer material, which is recyclable, has improved thermal conductivity as well as good mechanical and electrical performance.

A cable gland (1) for an optical closure (100) comprising: a gland body (10) configured to be inserted at least in part in an optical closure channel (110) of the optical closure (100) along an insertion direction (X-X) and to define at least one cable channel (2) for passage of optical cables, the gland body (10) comprising: a first gland member (20) configured to be attached to the optical closure (100); a second gland member (30) coupled with the first gland member (20); a deformable member (40) arranged between the first and second gland member (20, 30); a retaining arrangement (50) configured to retain the gland body (10) along the insertion direction (X-X) and to mutually approach the first gland member (20) and the second gland member (30) to radially deform the deformable member (40) and generate a sealing action of the deformable member (40) in the optical closure channel (110), the retaining arrangement (50) comprises a first retaining member (60) retained in the first gland member (20); a second retaining member (70) retained at least in part in the second gland member (30) and configured to engage the first retaining member (60) passing through the deformable member (40) to mutually approach the first and second gland members (20, 30).

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Zusammenfassung wird geladen …

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