公开(公告)号：US10373735B2

公开(公告)日：2019-08-06

申请号：US15508760

申请日：2014-09-05

Applicant: PRYSMIAN S.p.A.

Inventor： Marco Marelli ,  Luigi Colla

IPC: H01B7/14 ,  H02J3/38 ,  H01B7/00 ,  H01B7/18 ,  H01B9/00 ,  H01B9/02 ,  H01B7/26

Abstract: Submarine electrical cable system (100) having a substantially circular cross-section and comprising: a first insulated core (1) and a second insulated core (2); a three-phase cable (3) comprising three stranded insulated cores (8) the three-phase cable (3) being stranded with the first core (1) and the second core (2); an armor (4) surrounding the first core (1), the second core (2) and the three-phase cable (3).

公开(公告)号：US20190228876A1

公开(公告)日：2019-07-25

申请号：US16337809

申请日：2016-09-29

Applicant: Prysmian S.p.A.

Inventor： Enrico Maria Consonni ,  Gianni Miramonti ,  Luca Giorgio Maria De Rai ,  Paolo Veggetti

IPC: H01B7/18 ,  H01B7/04

Abstract: A cable has a tensile armor having a number of elongated polymeric tensile elements. At least one of the elongated polymeric tensile elements includes a bundle of high tensile fibers and a jacket tightly retaining the bundle of fibers. The elongated polymeric tensile elements are arranged with a lay loss of 1.5% at most. A method of manufacturing such a cable is also disclosed.

公开(公告)号：US20190227227A1

公开(公告)日：2019-07-25

申请号：US16330589

申请日：2016-09-09

Applicant: PRYSMIAN S.p.A. ,  POLITECNICO DI MILANO

Inventor： Lidia TERRUZZI ,  Pamela DE MARTINO ,  Attilio CITTERIO ,  Massimo GOLA

IPC: G02B6/02 ,  C03C25/1065 ,  C03C25/002 ,  C03C25/12

Abstract: The present invention concerns an optical fibre comprising: an optical waveguide comprising a glass core surrounded by a glass cladding; a coating surrounding said optical waveguide comprising a cured polymer material comprising a polyester obtained by polymerization of a monomer selected from an acid, a triglyceride, or a mixture of triglycerides having a C16-C24 aliphatic chain comprising at least two conjugated double bonds. The present invention concerns also a method for coating an optical fibre with said polyester coating. The cured polymer material forming the coating can be prepared by curing the polyester of the invention either thermally or by radiation.

公开(公告)号：US20180372971A1

公开(公告)日：2018-12-27

申请号：US16063236

申请日：2015-12-16

Applicant: PRYSMIAN S.p.A ,  POLITECNICO DI MILANO

Inventor： Lidia Terruzzi ,  Pamela De Martino ,  Attilio Citterio

IPC: G02B6/44 ,  G02B6/02 ,  C08G18/75 ,  C08G18/48 ,  C08G18/67 ,  C09D175/16

CPC classification number: G02B6/443 ,  C03C25/1065 ,  C08F290/067 ,  C08G18/246 ,  C08G18/4854 ,  C08G18/672 ,  C08G18/758 ,  C08K5/07 ,  C08K5/5397 ,  C09D4/00 ,  C09D175/16 ,  G02B6/02 ,  G02B6/02395 ,  C08G18/48 ,  C08F2222/1013 ,  C08F2222/1086

Abstract: An optical fibre comprising: an optical waveguide comprising a core surrounded by a cladding; a primary coating surrounding the optical waveguide; and a coating, surrounding the primary coating, comprising a polymer material obtained by radiation curing a polymerizable composition, the polymer material having a degree of crystallinity of at most 12. The coating of the optical fiber according to the present invention exhibits enhanced resistance upon exposure to high temperature, preferably a temperature over 250° C., while endowed with required features such as protective capability, elasticity, adhesion to underlying layer and simple manufacturing.

公开(公告)号：US10153069B2

公开(公告)日：2018-12-11

申请号：US15556834

申请日：2015-03-20

Applicant: PRYSMIAN S.P.A.

Inventor： Carl-Johan Dalin ,  Bo Johansson

IPC: H01B9/02 ,  H01B7/282 ,  H01B7/285

Abstract: A multi-phase power cable includes: a plurality of phase cores, each including an insulated electric conductor; a screen assembly including a metallic screen rod; a moisture barrier metallic sheet enclosing the plurality of phase cores and the screen rod; an outer jacket radially outer to the moisture barrier metallic sheet; and a multilayer arrangement including a first, second and third semiconducting water swellable layer surrounding the phase cores and in radial internal position with respect to the moisture barrier metallic sheet and in electric contact therewith, the screen assembly being arranged between the second and third semiconducting water swellable layers.

公开(公告)号：US10139579B2

公开(公告)日：2018-11-27

申请号：US14906975

申请日：2013-07-29

Applicant: PRYSMIAN S.P.A.

Inventor： Ian Dewi Lang ,  Paul John Roberts ,  Martin Vincent Davies ,  Ralph Sutehall

IPC: G02B6/44

Abstract: An optical cable includes an optical core and an external sheath surrounding the optical core. The external sheath includes a first material having a first, higher fracture toughness and a second material having a second, lower fracture toughness. The first and second materials are arranged so that the second, lower fracture toughness material is accessible from outside the cable along at least one longitudinally extending area of the sheath outer surface. For accessing the optical core of the cable, a short longitudinal cut, namely, few centimeters, is made with a blade in the accessible second, lower fracture toughness material. Then, its cut edges are pulled apart by hand. The pulling force causes the lower fracture toughness material to fracture, thereby propagating the initial short cut longitudinally along the sheath through its whole thickness.

公开(公告)号：US20180292625A1

公开(公告)日：2018-10-11

申请号：US15575712

申请日：2015-05-28

Applicant: Prysmian S.p.A.

Inventor： Ian Dewi LANG ,  Lee Anthony SPICER ,  Martin Vincent DAVIES

IPC: G02B6/44

Abstract: An optical cable includes an optical module which includes a strength member, a plurality of optical fibers arranged about the strength member, the optical fibers being arranged substantially on a circumference concentric with the strength member, and a retaining element arranged about the plurality of optical fibers.

公开(公告)号：US10068684B2

公开(公告)日：2018-09-04

申请号：US15510078

申请日：2014-09-12

Applicant: PRYSMIAN S.p.A.

Inventor： Vito Scrima ,  Fabio Tosi

IPC: G02B6/44 ,  H01B7/295 ,  C08L23/08 ,  C08K3/08 ,  C08K3/36

Abstract: A fire resistant cable comprising: at least one conducting element; at least one layer, surrounding said conducting element, made of a ceramifiable composition comprising: a polymeric material comprising an ethylene/vinyl acetate copolymer as main polymer; at least 25 wt % of silica; a fluxing agent selected from alkaline metal oxides or precursors thereof; a stabilizing agent comprising at least one of MgO, CaO, PbO, B2O3, or a precursor thereof; from 0.1 wt % to 5 wt % of a hydroxide selected from magnesium hydroxide, aluminum hydroxide and mixtures thereof; the above percentages being expressed with respect to the weight of the ceramifiable composition. Upon exposure to elevated temperatures such as those encountered in case of fire, the ceramifiable composition is transformed into a ceramic material capable of protecting the conducting element from fire and mechanical stresses. The fire resistant cable of the present invention can continue operating under fire conditions for a certain period of time.

公开(公告)号：US10024903B2

公开(公告)日：2018-07-17

申请号：US15032228

申请日：2013-10-29

Applicant: PRYSMIAN S.P.A.

Inventor： Antonio Di Stefano ,  Roberto Candela ,  Giuseppe Fiscelli

IPC: G01R31/12 ,  G01R31/14

Abstract: A partial discharge detection system including a partial discharge acquisition and processing device includes: a partial discharge detection device configured to provide a detected partial discharge electrical signal from partial discharge pulse generated by a first electrical object; and a first communication module configured to receive a detected synchronization signal carrying detected synchronization phase values and corresponding reference time values associated with an electrical supplying voltage of a second electrical object. The partial discharge detection system further includes: a phase value generator configured to produce synthetized phase values representing a synthetized synchronization signal, the phase value generator being adjustable according to phase errors; and an error computing module configured to compute said phase errors from the synthetized phase values, the detected synchronization phase values and the corresponding reference time values.

公开(公告)号：US09915798B2

公开(公告)日：2018-03-13

申请号：US14980218

申请日：2015-12-28

Applicant: PRYSMIAN S.P.A.

Inventor： Mark Edmund Lowell ,  Edward Wiencek ,  Mark Denne ,  Matthew Bodziony

IPC: G02B6/00 ,  G02B6/44 ,  H01B1/02 ,  H01B11/18 ,  H01B11/22 ,  H01B7/04

CPC classification number: G02B6/4416 ,  G02B6/443 ,  H01B1/02 ,  H01B7/046 ,  H01B11/1834 ,  H01B11/22

Abstract: An optical/electrical cable for downhole environments includes a plurality of optical fibers disposed within an interior metal tube. An electrically conducting layer surrounds the interior metal tube, an insulation layer surrounds and contacts the electrically conducting layer, and an exterior metal tube surrounds and contacts the insulation layer.