Abstract: An optical measuring machine includes an optical assembly moveable along an axial direction to acquire an image representing a workpiece, a contactless measuring device connected to the optical assembly to move with it. This contactless measuring device detects a distance between a sensitive portion thereof and a surface of the workpiece. A sensor is configured to detect an angular position around a central axis of a holding assembly, an axial position along the axial direction A control unit activates the optical assembly to acquire a first signal representing an external profile of a measuring zone comprising at first part representing a first tract of the external profile, to activate the contactless measuring device, and to acquire a second signal representing a distance between the sensitive portion and multiple portions of the measuring zone, and to reconstruct the complete geometry of the measuring zone, combining the first and second signals.

Abstract: An electrical cable analysis method includes providing an electrical cable comprising an elongated metallic element and a cable core, the cable core comprising an electrical conductor. The method includes connecting an electrical generator to an electrical circuit including the elongated metallic element, generating, by the electrical generator, a flow of an electrical current along the electrical circuit, detecting a magnetic field associated with the flow of the electrical current in the electrical cable, measuring at least one value relating to the magnetic field along a cable length of the electrical cable, and analyzing the measured at least one value to obtain information about at least one structural aspect of the electrical cable.

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: The present disclosure relates to an armoured cable (10) for transporting alternate current comprising: at least one core (12), each core comprising an electric conductor (121); at least one metallic screen (126) surrounding the at least one core (12); an armour (16), surrounding the at least one metallic screen, comprising an inner layer (16a) of armour wires and an outer layer (16b) of armour wires, at least part of the armour wires of the inner layer (16a) and at least part of the armour wires of outer layer (16b) comprising a ferromagnetic material; and a separating layer between the inner layer (16a) of armour wires and the outer layer (16b) of armour wires. The separating layer has a thickness of at least 1 mm. The present disclosure also relates to a method for reducing losses in said armoured cable and to a method for improving the performances of said armoured cable.

Abstract: An armoured power cable is disclosed. The cable includes: at least one core comprising an electric conductor; and an armour surrounding the core, wherein the amour comprises at least one layer made of a metallic material having a tensile strength of at least 400 MPa and showing a weight loss from 0.01% to 0.1% after 30 days of exposure to a corrosive solution according to ASTM G3172 (2004). The cable has mechanical properties suitable for its handling and installation, for example, underwater, and its armour can be at least partially degraded over time after installation due to corrosion exerted by corrosive agents present in the installation environment, without impairing the mechanical properties of the other cable portions and without impairing its electric performance.

Abstract: The present disclosure relates to an armoured cable (10) for transporting alternate current comprising: at least one core (12), each core comprising an electric conductor (121); at least one metallic screen (126) surrounding the at least one core (12); an armour (16), surrounding the at least one metallic screen, comprising an inner layer (16a) of armour wires and an outer layer (16b) of armour wires, at least part of the armour wires of the inner layer (16a) and at least part of the armour wires of outer layer (16b) comprising a ferromagnetic material; and a separating layer between the inner layer (16a) of armour wires and the outer layer (16b) of armour wires. The separating layer has a thickness of at least 1 mm. The present disclosure also relates to a method for reducing losses in said armoured cable and to a method for improving the performances of said armoured cable.

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: An optical measuring machine for measuring an object having a mainly longitudinal extension includes a holding assembly for the object, a sensing optical assembly movable parallel to a longitudinal axis of the object in order to allow complete acquisition of an image representing it, a contact probe connected to the optical assembly to move together with it along said longitudinal axis and movable with respect to the optical assembly orthogonally to the longitudinal axis, and sensor means configured to detect at least one angular position about the longitudinal axis of the holding assembly, an axial position along the longitudinal axis of the optical assembly and a radial position, orthogonal to the longitudinal axis, of the contact probe.

Abstract: An electrical cable analysis method includes providing an electrical cable comprising an elongated metallic element and a cable core, the cable core comprising an electrical conductor. The method includes connecting an electrical generator to an electrical circuit including the elongated metallic element, generating, by the electrical generator, a flow of an electrical current along the electrical circuit, detecting a magnetic field associated with the flow of the electrical current in the electrical cable, measuring at least one value relating to the magnetic field along a cable length of the electrical cable, and analyzing the measured at least one value to obtain information about at least one structural aspect of the electrical cable.

Abstract: Armoured cable (10) comprising: —a plurality of cores (12) stranded together according to a core stranding direction; —an armour (16) surrounding the plurality of cores (12) and comprising a layer of metal wires (16a) helically wound around the cores (12) according to an armour winding direction; wherein the at least one of core stranding direction (21) and the armour winding direction (22) is recurrently reversed along the cable length L so that the armoured cable (10) comprises unilay sections (102) along the cable length where the core stranding direction (21) and the armour winding direction (22) are the same. The invention also relates to a method for improving the performances of the armoured cable (10) and to a method for manufacturing the armoured cable (10).

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.

Abstract: Armoured cable (10) comprising: —a plurality of cores (12) stranded together according to a core stranding direction; —an armour (16) surrounding the plurality of cores (12) and comprising a layer of metal wires (16a) helically wound around the cores (12) according to an armour winding direction; wherein the at least one of core stranding direction (21) and the armour winding direction (22) is recurrently reversed along the cable length L so that the armoured cable (10) comprises unilay sections (102) along the cable length where the core stranding direction (21) and the armour winding direction (22) are the same. The invention also relates to a method for improving the performances of the armoured cable (10) and to a method for manufacturing the armoured cable (10).

Abstract: A method and armored cable for transporting an alternate current at a maximum allowable working conductor temperature, as determined by the overall cable losses, the overall cable losses including conductor losses and armor losses. The cable includes at least one core, including an electric conductor having a cross section area, and an armor surrounding the core along a circumference. The method includes: causing the armor losses not higher than 40% of the overall cable losses by having the armor made with a layer of a plurality of metal wires having an elongated cross section with a major axis, the major axis being oriented tangentially with respect to the circumference; and transporting the alternate current at the maximum allowable working conductor temperature, in the electric conductor having cross section area sized on the overall cable losses including the armor losses not higher than 40% of the overall cable losses.

Abstract: A cooling system for cooling a power transmission system that includes a cable configured to carry a current corresponding to a transported electric power may include: a cooling device configured to remove heat from the power transmission system; a power supply system configured to extract a power fraction from the cable and configured to supply the cooling device with the power fraction; and a control unit configured to control an amount of the extracted power fraction in response to a parameter of the electric power. When the parameter is higher than a threshold, the extracted power fraction is equal to a first value that depends on the electric power carried in the cable through a first function. When the parameter is lower than the threshold, the extracted power fraction is equal to a second value that depends on the electric power carried in the cable through a second function.

Abstract: An electrical power transmission line includes: at least one electrical cable; a raceway made of ferromagnetic material including a base and a cover defining an inner housing space for housing the electrical cable; a wet basic filling material having a pH between 11 and 13 housed in the inner housing space and embedding the at least one electrical cable. In order to achieve corrosion protection of the raceway, the inner surface of the cover is in contact with a basic passivating material having a pH between 11 and 13.

Abstract: An armored cable for transporting an alternate current at a maximum allowable working conductor temperature includes: at least two cores stranded together according to a core stranding lay and a core stranding pitch A; and an armor surrounding the at least two cores, the armor including one layer of a plurality of metal wires wound around the cores according to a helical armor winding lay and an armor winding pitch B, the helical armor winding lay having the same direction as the core stranding lay, the armor winding pitch B being from 0.4A to 2.5A and differing from the core stranding pitch A by at least 10%.

Abstract: A method and armoured cable for transporting an alternate current at a maximum allowable working conductor temperature, as determined by the overall cable losses, the overall cable losses including conductor losses and armour losses. The cable includes at least one core, including an electric conductor having a cross section area, and an armour surrounding the core along a circumference. The method includes: causing the armour losses not higher than 40% of the overall cable losses by having the armour made with a layer of a plurality of metal wires having an elongated cross section with a major axis, the major axis being oriented tangentially with respect to the circumference; and transporting the alternate current at the maximum allowable working conductor temperature, in the electric conductor having cross section area sized on the overall cable losses including the armour losses not higher than 40% of the overall cable losses.

Abstract: A cooling system for cooling a power transmission system that includes a cable configured to carry a current corresponding to a transported electric power may include: a cooling device configured to remove heat from the power transmission system; a power supply system configured to extract a power fraction from the cable and configured to supply the cooling device with the power fraction; and a control unit configured to control an amount of the extracted power fraction in response to a parameter of the electric power. When the parameter is higher than a threshold, the extracted power fraction is equal to a first value that depends on the electric power carried in the cable through a first function. When the parameter is lower than the threshold, the extracted power fraction is equal to a second value that depends on the electric power carried in the cable through a second function.

Abstract: An armoured cable for transporting an alternate current at a maximum allowable working conductor temperature includes: at least two cores stranded together according to a core stranding lay and a core stranding pitch A; and an armour surrounding the at least two cores, the armour including one layer of a plurality of metal wires wound around the cores according to a helical armour winding lay and an armour winding pitch B, the helical armour winding lay having the same direction as the core stranding lay, the armour winding pitch B being from 0.4A to 2.5A and differing from the core stranding pitch A by at least 10%.

Abstract: A magnetically shielded cable arrangement, comprising at least two AC cables (201-203) comprising a spaced portion extending between two close portions of parallel cables, such spaced portion sequentially including a diverging portion, a widely spaced portion and a converging portion, and an EMF shielding system (1) laid over said at least two AC cables (201-203), said EMF shielding system (1) comprising a conductor (2, 3, 11, 12) having two branches (2, 3) forming a median portion (4, 5) and end portions (7-10), the median portion width being equal to or larger than the AC cables distance in the widely spaced portion and the width at the extremities of the end portions (7-10) being larger than the AC cables distance in the close portions and smaller than the AC cables distance in the widely spaced portion, said conductor (2, 3, 11, 12) comprising an inner electrical path (2a, 3a) and an outer electrical path (2e, 3e) connected together (11, 12) at relevant longitudinal ends.