Abstract: A method for connecting a number of users with at least one signal bearing optical fiber contained in an optical cable. The method includes: a) interrupting the signal bearing optical fiber at a first branch point, obtaining a first optical fiber segment upstream of the branch point and a second optical fiber segment downstream of the branch point; b) providing an optical splitter at the branch point, the optical splitter including an input and two outputs; c) coupling the first optical fiber segment with the input of the optical splitter; d) coupling a first output of the optical splitter with a first user; e) coupling a second output of the optical splitter with a downstream optical fiber segment of an interrupted optical fiber contained in the optical cable; and f) coupling the downstream optical fiber segment with at least one further user at a further branch point downstream the first branch point.

Abstract: An optical cable including a load bearing core includes a longitudinally and radially extending slot housing at least one optical fibre, wherein the slot has a width providing a low clearance for the optical fibre(s) housed therein and preventing two optical fibres being stuck to one another; and the slot has a depth equal to or lower than a radius of the core.

Abstract: Optical fiber connector assembly for a fiber optic cable includes an optical fiber having an end portion terminated with a ferrule and rod members. The optical fiber connector assembly includes: a ferrule holder configured to hold the end portion of the optical fiber, the ferrule and the rod members; a connector having an internal passageway for housing the ferrule holder; a locking member extending lengthwise and having an internal passageway for the end portion of the fiber optic cable. A pre-connectorized fiber optic cable includes a fiber optic cable and the optical fiber connector assembly mounted upon an end portion of the fiber optic cable.

Abstract: An optical cable includes an optical core and sheath enclosing the optical core. The optical core includes a number of optical units having respective colors and being wound about a longitudinal axis of the cable. The sheath includes at least one non opaque longitudinal section through which a sequence of colors of the optical units is visible from outside the cable. The color sequence acts as an identifier for the cable. The cable may therefore be easily identified (e.g. amongst other cables laid down within the same duct) by a simple visual inspection of the cable's inner structure through the non opaque section(s) of its external sheath.

Abstract: An electrical cable link apparatus includes a first electrical conductor structured to conduct a first electrical current from a first screen portion of a first external electrical cable; an electrical linking module connected to the first electrical conductor and structured to implement a cross-bonding/earting link; a first inductor device inductively coupled to the first electrical conductor and able to generate a supply voltage.

Abstract: A cable includes an indicating element for detecting the infiltration of water into the cable and a method using such indicating element.

Abstract: An optical cable has a cable core including at least one tube loosely accommodating optical fibers, the at least one tube being accommodated within a jacket embedding at least two strength members, the cable core and the jacket comprising combustible material. A ratio of core combustible material/jacket combustible material is lower than 60 vol %. The jacket is made of a composition having hardness of at least 60 Shore D and a LOI higher than 35%.

Abstract: A method of manufacturing at least one optical fibre preform comprising: providing a plurality of partially porous intermediate preforms, each partially porous intermediate preform having a longitudinal axis and comprising a respective soot intermediate clad layer formed around a respective glass core rod comprising a central core region of radius a and an inner clad region of radius b to define a first core-to-clad ratio a/b; consolidating the formed soot intermediate clad layers to form a respective plurality of intermediate glass preforms, each of the plurality of intermediate glass preforms comprising an intermediate clad region having an external radius c to define a second core-to-clad ratio a/c of from 0.20 to 0.

Abstract: A high voltage electric cable having a longitudinal axis may include: a conductive core having a first cross sectional area; wherein the conductive core includes a solid, central conductor, and at least three solid, sector conductors stranded around the central conductor. The central conductor may have a second cross sectional area. A ratio of the second cross sectional area to the first cross sectional area may be of from 1/130 to 1/20.

Abstract: A method for detecting an electrical current longitudinal variation in a power transmission system including a power cable. Electric losses and their location along the cable length can be detected. Current variation in a grounded metallic layer of a power cable is measured from Faraday rotation of polarised light travelling in a single-mode optical fibre wound in a radially external position with respect to the grounded metallic layer. Measurements of the Faraday rotation are carried out by means of polarization-sensitive optical time domain reflectometry (POTDR) or by polarization-sensitive optical frequency domain reflectometry (POFDR) while a direct current is injected in the metallic layer.

Abstract: A process for recovering wastes of a polymeric composition including at least one peroxide-curable polymer and at least one peroxidic crosslinking agent, which includes compounding the wastes with at least one antioxidant agent suitable for sulfur-vulcanized elastomeric compositions, at a temperature lower than the decomposition temperature of the at least one peroxide crosslinking agent. The compounding of the polymeric wastes with the antioxidant agent is carried out at a temperature lower than the decomposition temperature of the peroxide crosslinking agent, so as to avoid any premature activation of the crosslinking agent. The process is particularly suitable for compositions based on elastomeric polyolefins, more preferably for elastomeric ethylene copolymers such as ethylene-propylene copolymers (EPR) and ethylene-propylene-diene terpolymers (EPDM), which can be processed at relatively low temperatures, much lower than the decomposition temperatures of the most common peroxide crosslinking agents.

Abstract: A partial discharge detecting device includes an electric field sensor including: a first electrode configured to detect by capacitive coupling a partial discharge signal generated by an electrical object and to provide a corresponding first electrical signal, and a second electrode isolated from the first electrode and structured to detect an environmental noise and to provide a corresponding second electrical signal. The detecting device further includes a transmission line structured to propagate an output signal obtained from the electric field sensor toward an external analysis apparatus and an electronic module connected to the first and second electrodes and structured to process the first and second electrical signals and to provide the output signal to the transmission line. The electronic module is structured to decouple the electric field sensor from the transmission line and avoid resonance of the electric field sensor with the transmission line.

Abstract: A high voltage direct current cable includes at least one electrical conductor, at least one semiconducting layer, at least one stratified insulation made from windings of at least one paper-polypropylene laminate, the stratified insulation being impregnated with at least one electrically insulating fluid having a kinematic viscosity of at least 1,000 cSt at 60EC, wherein the laminate includes at least one paper layer having an air impermeability of at least 100,000 Gurley sec?1. Such a high air impermeability of the paper layer(s) remarkably reduces the swelling of the polypropylene layer(s) during impregnation with a high viscosity insulating fluid, thus preventing delamination, up to the end of the impregnation process for the whole stratified insulation.

Abstract: A composite flat cable, having in cross-section a major side, may include an outer sheath; two main electrical conductors; and two ducts for fluid circulation configured to circulate fluid. A composite flat cable may include two ducts configured to circulate fluid; a first main electrical conductor on a first side of the two ducts; a second main electrical conductor on a second side of the two ducts; and a sheath around the two ducts, the first main electrical conductor, and second main electrical conductor. A solar cogeneration plant may include at least one cell configured to produce electric current, connected to a plant for distribution of electrical energy and of heated fluid by a composite flat cable.

Abstract: A screen connector for electrical cables may include: a conductive shield sock extending about a longitudinal axis and configured to couple to a conductive screen of at least one electrical cable or to at least one jointing assembly for the electrical cables; a shrinkable protective sleeve arranged in a radially outer position with respect to the conductive shield sock; at least one first removable support element arranged in a radially inner position with respect to the conductive shield sock and configured to hold the conductive shield sock and the shrinkable protective sleeve in a radially expanded state; and/or at the axially opposite end portions of the screen connector, at least one watertight element. The at least one watertight element may be radially interposed between the conductive shield sock and the shrinkable protective sleeve.

Abstract: A cable includes at least one electrical conductor and at least one electrically insulating layer surrounding the electrical conductor, wherein the at least one electrically insulating layer includes: (a) a thermoplastic polymer material selected from: at least one copolymer (i) of propylene with at least one olefin comonomer selected from ethylene and an a-olefin other than propylene, the copolymer having a melting point greater than or equal to 130° C.

Abstract: Automated tightener for a wet mateable connection assembly includes a first and a second watertight case, the automated tightener bearing a fixing assembly and including a first and a second sliding portion arranged in a parallel lay, connected together by a push/pull actuator substantially orthogonal thereto, each sliding portion being provided with operable engagers.

Abstract: A method for underwater installing of a wet mateable connection assembly includes the steps of: providing a submerged case having a seat; connecting one end of a guiding rope to the seat, the other end being kept over the sea level; appending a submersible case to the guiding rope by a guide handle; causing the submersible case to move along the rope until the guide handle engages with the seat; and pivoting the submersible case around the seat up to contact the submerged case.

Abstract: A high-voltage alternate current (HVAC) electric cable for power transmission or distribution in under-ground power lines has a reduced capacitance obtained by reducing the density of the insulating layer.

Abstract: A wet mateable connection assembly includes: at least one first and a second watertight case mateable to each other in a watertight manner, the first and the second case having respective first and second gates at respective first and second coupling ends; at least one first phase connector arranged inside the first case; and at least one second phase connector arranged inside the second case, wherein the first gate is movable inwardly to the second case.