It is disclosed a figure of eight cable comprising a first cable element comprising a first core enclosed by a first outer sheath, a second cable element comprising a second core enclosed by a second outer sheath and a web joining the first and second outer sheaths so as to provide the cable with a major plane of symmetry X which comprises the longitudinal axes of the first and second cable elements. The cable also comprises at least one strength member embedded within the first or second outer sheath. All the strength members of the cable are substantially located on the major plane of symmetry X of the cable.

A protective apparatus for a distribution line conductor includes an elongate tube configured to be installed on the conductor and a plurality of annular members concentrically positioned on the tube and configured to rotate independently of each other. The tube has a longitudinal axis and defines a longitudinally extending chamber configured to receive the conductor. The tube has opposite first and second ends and a longitudinally extending opening from the first end to the second end that facilitates installation of the elongate tube on the conductor. Each annular member includes an outer surface and a plurality of circumferentially-spaced apart members extending outwardly from the outer surface. Each annular member includes a longitudinally extending slot that is configured to align with the longitudinally extending opening of the tube to facilitate installation of the elongate tube and the plurality of annular members as an assembly on the conductor.

A protective apparatus for a distribution line conductor includes an elongate tube configured to be installed on the conductor and a plurality of annular members concentrically positioned on the tube and configured to rotate independently of each other. The tube has a longitudinal axis and defines a longitudinally extending chamber configured to receive the conductor. The tube has opposite first and second ends and a longitudinally extending opening from the first end to the second end that facilitates installation of the elongate tube on the conductor. Each annular member includes an outer surface and a plurality of circumferentially-spaced apart members extending outwardly from the outer surface. Each annular member includes a longitudinally extending slot that is configured to align with the longitudinally extending opening of the tube to facilitate installation of the elongate tube and the plurality of annular members as an assembly on the conductor.

A dielectric cover for an insulator and conductor in an electrical distribution includes an insulator cover for covering the insulator, an arm for covering a portion of the conductor extending from under the insulator cover, and an arm adapter for securing the arm to the insulator cover. The arm adapter has a raised outer first rib, and the arm has a raised outer second rib and an inner first groove. The lineman positions the insulator cover and arm adapter over the insulator, such as by using a hotstick. Then, the lineman slides the arm down over the arm adapter so that the first rib enters the first groove to secure the arm to the arm adapter. Retaining pins are then inserted through holes in the insulator cover and arm to secure the dielectric cover over the insulator and conductor. The arm's raised second rib acts as a water dam to prevent flashovers.

A dielectric cover for an insulator and conductor in an electrical distribution includes an insulator cover for covering the insulator, an arm for covering a portion of the conductor extending from under the insulator cover, and an arm adapter for securing the arm to the insulator cover. The arm adapter has a raised outer first rib, and the arm has a raised outer second rib and an inner first groove. The lineman positions the insulator cover and arm adapter over the insulator, such as by using a hotstick. Then, the lineman slides the arm down over the arm adapter so that the first rib enters the first groove to secure the arm to the arm adapter. Retaining pins are then inserted through holes in the insulator cover and arm to secure the dielectric cover over the insulator and conductor. The arm's raised second rib acts as a water dam to prevent flashovers.

The invention relates to a contamination protection device (10) for high-voltage insulators (3), and to an assembly of a contamination protection device (10) and a high-voltage insulator (10). The contamination protection device (10) is designed for fastening to the insulator cap (5) of the high-voltage insulator (3) and has a protective shield (11), which extends radially around a feed-through opening (12) for the connection element (7) of the insulator cap (5), the feed-through opening (12) being surrounded, on the one side of the protective shield (11), by a fastening region (23) for interlocking connection to the insulator cap (5). On the other side of the protective shield (11), two eyes (14) for the insertion of a tab element (30) are provided and a tab element (30) is provided. The eyes (14) are arranged in such a way that the tab element (30) extends over the feed-through opening (12) after having been inserted

System and method for determining real-time sag and shape information of an electrical power line based on strain distribution along a length of an optical fiber associated with the power line. An embedded fiber coupled to an overhead transmission line measures strain using the backscatter of an optical signal, the optical signal is then interrogated using an interferometer.

An apparatus for protecting a component of a power distribution system against wildlife, the apparatus comprising a cover having a first wall and a second wall, the first wall and the second wall being spaced apart to receive part of the component; the first wall having an opening for receiving a pin; and a cantilever mount at the opening for supporting the pin in the first wall. Various configurations of cantilever mount and pin may be used. Opposing pins in opposing walls may be used. The pins may extend towards each other and may or may not meet.

An apparatus for protecting a component of a power distribution system against wildlife, the apparatus comprising a cover having a first wall and a second wall, the first wall and the second wall being spaced apart to receive part of the component; the first wall having an opening for receiving a pin; and a cantilever mount at the opening for supporting the pin in the first wall. Various configurations of cantilever mount and pin may be used. Opposing pins in opposing walls may be used. The pins may extend towards each other and may or may not meet.

A utility pole location specifying system according to the present disclosure includes a cable (20) containing a communication optical fiber disposed in a utility pole (10), a receiving unit (331) configured to receive an optical signal containing a characteristic pattern of the utility pole (10) from at least one communication optical fiber contained in the cable (20), and a specifying unit (332) configured to specify a location of the utility pole (10) based on the characteristic pattern.