Abstract: A power cable comprises an insulated conductor; a copper water barrier, in form of a tube with a welding line, surrounding each insulated conductor; and a polymeric sheath surrounding each copper water barrier. The copper water barrier has a thickness and the polymeric sheath has a thickness such that a ratio between the thickness of the copper water barrier and the thickness of the polymeric sheath is 0.15 at most.

Abstract: A flame-retardant electric cable having a core comprising at least one electric conductor, an electrically insulating coating and an outermost layer made from a flame-retardant polymer composition comprising: a) polyvinylchloride (PVC) as base polymer; b) 25-45% (70-110 phr) by weight of at least one metal hydroxide; c) 0.4-3% (about 1-8 phr) by weight of an optionally surface-treated montmorillonite having average particle dimensions of from 5 to 20 ?m; d) 1.2-3% (about 3-8 phr) by weight of antimony trioxide; wherein the sum of the amount of montmorillonite and antimony trioxide is at least 5.5 phr and wherein the antimony trioxide and montmorillonite are in a ratio of from 1:0.1 to 1:2.5.

Abstract: The present invention relates to a cable termination system comprising: —a power cable sequentially comprising a first length of exposed outer semiconductive layer, a length of exposed insulating layer and a length of exposed electric conductor, —an electric field control element adapted to be arranged around a portion of said power cable, said electric field control element comprising: —first and second longitudinally spaced semiconducting electrodes; —a field grading layer longitudinally extending between the first and second semiconducting electrodes and in electric contact therewith; —an insulating layer surrounding the semiconducting electrodes and the field grading layer, —wherein the first semiconducting electrode is positioned across a first boundary between the first length of exposed outer semiconductive layer and the length of exposed insulating layer, —wherein said second semiconducting electrode (160) is electrically connected with said length of exposed electric conductor (20), —a tubular insula

Abstract: Distribution box for Fiber To The Antenna (FTTA) systems comprising: an upper compartment and a lower compartment separated one from one another, the lower compartment being provided with a sealable entry point for a pre-terminated hybrid cable comprising at least one electric conductor and at least one optical fiber, a plurality of electrical connectors for electrical power conductors and at least one optical connector for optical fiber being arranged within the lower compartment, the upper compartment comprising one or more connection points for hybrid jumper cables.

Abstract: A fiber management cassette for storing loops of one or more optical fiber elements is disclosed. An exemplary cassette comprises: a winding area to accommodate the loops of one or more optical fiber elements; a fiber passageway adjacent to the winding area, the fiber passageway allowing the optical fiber elements to enter and exit the cassette; a pivot element located in the proximity of the fiber passageway, the pivot element being configured to pivot the cassette around a pivot axis perpendicular to a bottom surface of the cassette; and an anti-pull tab comprising a leg extending towards the bottom surface. The anti-pull tab is located in the proximity of the fiber passageway, and the leg is configured to be moved upwards to arrange the optical fiber elements in the fiber passageway underneath the anti-pull tab.

Abstract: An optical cable comprises a group of optical modules. Each of the optical modules comprises a strength member, a plurality of optical fibers arranged about the strength member, the plurality of optical fibers being arranged substantially on a circumference concentric with the strength member, and a retaining element arranged about the plurality of optical fibers. The strength member is covered by a coating, and the plurality of optical fibers are at least partly embedded within the coating. The optical cable comprises an outer sheath around the group of optical modules. The optical cable does not have a central strength member.

Abstract: The present disclosure relates to a signalling cable that includes: a cable core, a metallic screen surrounding and in direct contact with the cable core, and at least one flame retardant low smoke zero halogen polymeric sheath surrounding and in radially position with respect to the metallic screen. The cable core includes a plurality of insulated electric conductors and a core wrap. The insulated electric conductors each includes an electric conductor insulated by a fire barrier and a flame retardant low smoke zero halogen polymeric insulating layer.

Abstract: The present disclosure relates to an armoured AC cable comprising at least one core comprising an electric conductor, and an armour surrounding the at least one core and comprising ferromagnetic wires, wherein the ferromagnetic wires are permanently magnetized with a remanent magnetic field which is uniform or variable along the cable length L. The present disclosure also relates to a process for producing an armoured AC cable, a method for improving the performances of an armoured AC cable, and a method for reducing losses in an armoured AC cable.

Abstract: A flame-retardant electric cable has a core including at least one electric conductor, an electrically insulating coating and an outermost layer made from a substantially thermoplastic, low smoke zero halogen flame-retardant polymer composition. The composition includes a polymeric base made of at least one polyethylene homopolymer or copolymer having a density of 0.94 g/cm3 at most. The composition further includes 60-64% by weight of a metal hydroxide, at least 2% by weight of an ammonium coated montmorillonite having average particle dimensions of from 5 to 20 ?m, and a polysiloxane.

Abstract: A flame-retardant optical cable is disclosed which includes a polymeric central loose tube housing optical fibres, a metallic armour surrounding the polymeric central loose tube, and a multi-layered sheath surrounding and in direct contact with the metallic armour. The multi-layered sheath includes an inner layer, an intermediate layer, and an outer layer, all made of a LSoH flame-retardant material. The LSoH flame-retardant material of the intermediate layer has a limiting oxygen index (LOI) higher than the LOI of the LSoH flame-retardant material of the inner layer and of the outer layer. Such cable has improved flame-retardant properties, particularly in terms of slowing flame propagation, heat release, droplets and emission of smokes, when it is exposed to flames during fire.

Abstract: A flame retardant cable for low-voltage applications is disclosed which comprises at least one conductor individually electrically insulated by a layer of polymeric material, a fire-resistant tape containing an inorganic material wrapped around said at least one individually electrically insulated conductor and an multilayered outer sheath having flame-retardant properties which encloses said at least one individually electrically insulated conductor and said fire-resistant tape, wherein said multilayered outer sheath comprises an inner layer and an outer layer, the inner layer being made of a flame-retardant polymeric material having a limiting oxygen index (LOI) higher than the LOI of the flame-retardant polymeric material forming the outer layer of said sheath.

Abstract: A fire-resistant optical fibre cable includes a core having a central strength member and buffer tubes arranged around the central strength member. Each buffer tube contains optical fibres. A mica layer is arranged around the core. A glass yarn layer surrounds and is in direct contact with the mica layer. Metal armour surrounds the glass yarn layer. A multi-layered sheath surrounds and is in direct contact with the armour. The sheath includes a first layer, a second layer surrounding and in contact with the first layer, and a third layer in a radial inner position with respect to the first layer and in direct contact thereto. The first, second and third layers are made of LS0H flame-retardant material. The LS0H material of the first layer has an LOI higher than the LOI of the LS0H material of the second and third layers. The second layer is the cable outermost layer.

Abstract: Power cable having an insulation system comprising at least one layer made of a thermoplastic material based on a polypropylene matrix admixed with a dielectric fluid, the thermoplastic material having a melting enthalpy of from 15 to 50 J/g and the polypropylene matrix being made of a material selected from: a heterophasic ethylene-propylene copolymer (a) having a melting enthalpy of from 15 to 50 J/g; or an intimate admixture of (a) and a propylene homopolymer or an ethylene propylene copolymer (b) having a melting enthalpy greater than 50 J/g. The cable is particularly suitable for current transport at high voltage or extra high voltage.

Abstract: The present invention relates to an optical fiber ribbon, comprising a plurality of adjacent optical fiber units extending in a longitudinal direction and arranged in parallel forming an optical fiber assembly having a width, each of the optical fiber units comprising either a single fiber or a group of at most three optical fibers, preferably two optical fibers, encapsulated with a matrix material; and a plurality of successive elongated rectilinear beads of a bonding material being arranged along a length of said assembly; each of said plurality of beads being configured to form an elongated bond between two adjacent optical fiber units of the plurality of optical fiber units; wherein a first bead forming a first bond connects a first pair of adjacent optical fiber units while the successive bond formed by the successive bead, connects a further pair of adjacent optical fiber units, wherein at least one optical fiber unit of the further pair differs from the optical fiber units of the first pair; wherein at

Abstract: In one embodiment, a fiber optic cable comprises a core comprising a central strength member and a plurality of buffer tubes arranged around the central strength member, where each buffer tube includes a plurality of optical fibers. The fiber optic cable includes a mica layer arranged around the core, a glass yarn layer surrounding and in direct contact with the mica layer, an inner sheath surrounding and in direct contact with the glass yarn layer, a metal armor surrounding the inner sheath; and an outer sheath surrounding and in direct contact with the metal armor. The central strength member comprises a hydroxide-containing flame retardant polymeric material, and the plurality of buffer tubes contain a water-blocking filling material comprising a silicone gel, where the silicone gel has a drop point of at least 200° C., and where the fiber optical cable is configured to be fire resistant.

Abstract: An optical cable comprising an optical core and an external sheath surrounding the optical core, wherein the external sheath comprises an inner layer circumferentially enclosing the optical core and an outer layer circumferentially enclosing the inner layer and comprising at least one longitudinal cavity accessible from outside the external sheath and extending through at least a portion of the outer layer thickness. The inner and outer layers of the external sheath are made of a first material having a first tensile strength, while the cavities in the outer layer are filled with a second material having a second tensile strength lower than the first tensile strength.

Abstract: An optical fibre comprising: an optical waveguide comprising a glass core surrounded by a glass cladding; a coating surrounding said optical waveguide comprising a polymer material comprising a cured polyester obtained by: (a) esterification of a reactant (A) selected from carboxylic acids, triglycerides, and mixtures thereof, having a C16-C24 aliphatic chain comprising at least two conjugated double bonds, with a reactant (B) selected from polyols having at least 3 hydroxyl groups, the polyols being thermally stable up to 300° C.; (b) curing of the 10 so obtained polyester, in the presence of a transition metal salt, the transition metal being selected from Mn, Fe, Co, Cu, and Ni. Preferably, the step of curing is a thermal curing, preferably up to 300° C. The transition metal salt acts as curing accelerator, i.e.

Abstract: In one embodiment, an air-blown optical fiber unit includes one or more optical fibers, an inner layer substantially completely embedding the one or more optical fibers, and an outer layer radially external to the inner layer. The inner layer has a tensile strength of from 0.1 MPa to 1 MPa, and an elongation at break of from 10% to 80%.

Abstract: A power cable includes an electric conductor; an electrical insulation layer surrounding the electrical conductor; a cooling system including a cooling duct substantially parallel to the electrical conductor along a power cable longitudinal axis and configured to flow a cooling fluid; a carbon allotrope layer in direct contact with the electrical conductor, where the carbon allotrope layer is provided between the electric conductor and the cooling duct; and a cable jacket enclosing the electric conductor, the electrical insulation layer, and the cooling system.

Abstract: It is described a processing apparatus (2) for detecting partial discharge pulses in the presence of noise signal, comprising: a first detector (3) configured to detect an electromagnetic impulsive signal (PINT; PEX2) from a first area (9) of an electrical object (1, 6) and generate a first electrical pulse (P1) representing a first detection event of the electromagnetic impulsive signal; a second detector (4) configured to detect the electromagnetic impulsive signal from a second area (10) of the electrical object (1, 6) and generate a second electrical pulse (P2) associated with a second detection event of the electromagnetic impulsive signal; a time calculation module (17) configured to measure a time interval (Td1; Td2) between the first detection event and the second detection event; and a processing module (18) connected to the time calculation module (17).