An electric power cable is provided, wherein the electric power cable comprises an organic silicon insulating coating layer capable of being cured at room temperature. Generally, the electric power cable comprises a cable conductor capable of transmitting electric energy, and the organic silicon insulating coating layer is coated to the exterior surface of the cable conductor. The cable conductor may be an exposed overhead bare conductive wire, and the organic silicon insulating coating layer is especially suitable for being formed on the exterior surface of the overhead bare conductive wire by coating directly thereto.

A hybrid single or multilayer composite reinforcement system is disclosed. The system is configured to install or apply around the existing power transmission lines, for example, ACSR transmission lines for increasing ampacity and also decreasing sag of the power transmission lines. The hybrid composite system comprises a first layer, a second layer, and a composite core as a structural reinforcement component. The first layer and second layer are formed using a fiber reinforced resin composite material, comprising a basalt fiber and the structural reinforcement component is a carbon fiber. The composite core is disposed between the first layer and second layer. Further, the first layer and second layer are cured, thereby making the multilayer hybrid composite reinforcement system. The composite core, comprising for example carbon fiber, provides structural strength for the hybrid composite system. The system is novel, lightweight, fast and easy to install, long-lasting, reliable, environmentally friendly, and cost-effective.

The application relates to a grounding conductor and an electrical system including such a grounding conductor including a plurality of conductive aluminum strands where each such strand is provided with at least one sheath of an electrically conductive polymer material having a volume resistivity (?) below 100 ?.Math.cm.

An electrical train messenger wire and a catenary system for an electrical train including the electrical train messenger wire. The messenger wire includes a fiber-reinforced composite strength member and a conductive layer surrounding the fiber-reinforced composite strength member, where the conductive layer is fabricated from copper or a copper alloy. The fiber-reinforced strength member advantageously has a high tensile strength, thereby reducing the sag of a contact wire supported by the messenger wire. The catenary system employing the messenger wire may facilitate faster train speeds and may obviate the need for cantilever systems such as balanced weight anchors to maintain tension in the contact wire.

Systems, methods and tools for the interrogation of fiber-reinforced composite strength members to assess the structural integrity of the strength members. The systems and methods utilize the transmission of light through optical fibers that are embedded along the length of the strength members. The inability to detect light through one or more of the optical fibers may be an indication that the structural integrity of the strength member is compromised. The systems and methods may be implemented without great difficulty and may be implemented at any time in the life cycle of the strength member, from production through installation. The systems and methods have particular applicability to bare overhead electrical cables that include a fiber-reinforced strength member.

It is disclosed a cable for an overhead power transmission line, the cable comprising: a first optical unit comprising a first metal tube housing at least one an optical fiber suitable for sensing strain, the at least one optical fiber in the first metal tube being a tight buffered optical fiber fixed to an inner surface of the first metal tube; a second optical unit comprising a second metal tube comprising one or more loose optical fibers suitable for sensing temperature; and an armor comprising one or more layers of metal wires. The first optical unit is surrounded by at least one layer of semi-conductive or conductive material electrically contacting the outer surface of the first metal tube.

A structure for directly leading down the optical unit (OU) from the OPPC (optical phase conductor) cable, by the OU leading-down connector (2) invented recently, is used for separating the plastic-pipe OU from the OPPC cable installed on the tower, avoiding the splicing of fibers on the tower of the old technique. Therefore it is possible to assemble the OPPC cable (1), the OU leading-down connector (2), the preformed armor rod assembly (3), the first link fitting (4), the residual cable rack (5), the second link fitting (6), the insulator string (7) on the ground all together. Then the whole assemble can be erected on to the tower. Just as the conventional overhead power line construction. So it is simple and saving in work.

An overhead line (10) including luminous tape (2) wound around the surface of a line body (1) is used to prevent birds from striking the overhead line (10) at night.

The present invention discloses electrical cables containing a cable core and a plurality of conductive elements surrounding the cable core. The cable core contains at least one composite core, and each composite core contains a rod which contains a plurality of unidirectionally aligned fiber rovings embedded within a thermoplastic polymer matrix, and surrounded by a capping layer.

An electric conductor may be provided. The electric conductor may comprise a conductor core and a plurality of conductor strands wrapped around the conductor core. The conductor core may comprise a plurality of core strands comprising an overall number of strands. The plurality of core strands may comprise a first portion of core strands and a second portion of core strands. The first portion of core strands may comprise a first number of strands. The first portion of core strands may comprise steel. The second portion of core strands may comprise a second number of strands. The second portion of core strands may comprise a composite material. A ratio of the first number of strands to the overall number of strands and a ratio of the second number of strands to the overall number of strands may be optimized to give the conductor core a predetermined characteristic.