A mounting device for mounting a line surge arrester on a power tower includes a base having at least one fastening structure for fastening to a tower-side component, and a joint unit for positioning the line surge arrester. The joint unit has a joint for pivoting the line surge arrester about a joint axis. At least one position is a mounting position and at least one other position is a working position of the line surge arrester. The mounting device furthermore has parts of a drive mechanism. The parts are permanently connected to the base and/or to the joint, for driving the pivoting of the line surge arrester. A line surge arrester unit includes a line surge arrester and the mounting device. A method provides for mounting a line surge arrester on a power tower.

A connector for connecting a roller to a base for extending a conductor over a span for electrical distribution or sub transmission. The connector is configured to work with pre existing or standard rollers such as a Universal Stringing Roller as well as with embodiments of the inventor's SAR roller, disclosed in a contemporaneously filed United States non-provisional patent application. The connector allows for use of a rotating base disclosed in the contemporaneously pending United States patent application that allows for adjustment of the stringing roller without having to disconnect the stringing roller from the base, whereas in prior stringing roller to base configurations the stringing roller was required to be removed from the base, the string roller rotated, and the stringing roller attached to the base at a new position, typically a flange, on the stringing roller.

Aspects of the subject disclosure may include, for example, an antenna support includes a stabilizer configured to align an antenna on a projection of a longitudinal tangent of a transmission line along a horizontal plane. A holder is configured to secure the stabilizer to the transmission line. Other embodiments are disclosed.

The present invention includes a flexible jumper jig which is reconfigurable to replicate the end positions of a flexible jumper as it would be on an installed substation. According to a further preferred embodiment, an exemplary system of the present invention may include a framework forming three orthogonal axes and repositionable tooling mounts for end fittings. According to another aspect of the present invention, an x-axis oriented rail may preferably hold a tooling mount which is configurable to be rotated about its axis to allow for alternate tooling mount orientations. Further, a y-axis oriented rail may be perpendicular to the x-axis rail and may be fixed. Still further, a z-axis oriented rail may be perpendicular to and slide along the y-axis rail. Additionally, a second tooling mount may be attached to the z-axis rail.

An isolator for mounting cable hangers, comprising: a platform having a hole; two extenders extending away from the bottom surface of the platform; and two locking clips, wherein each locking clip extends from an extender in a direction that is away from the bottom surface of the platform.

What is disclosed is an insulator for providing insulation between a stringing block for an electrical conductor and a pole or cross arm on which the stringing block is mounted. The insulator is made of a non-conductive material such as plastic. The insulator has an upper opening in the body that is configured for receiving a flange of a stringing roller. The insulator can be configured to be mounted directly to a pole or cross arm, such as by using a ratcheting strap. Alternatively the insulator can be configured to be positioned between the roller and a base, such as those known in the prior art.

An electric transmission line support structure. A crossarm depending perpendicularly from a vertical shaft has a first and a second mounting point. A central support depends from the crossarm between the first and the second mounting point. A first conductor bundle is attached to the first mounting point by a first structural string and to the central support by a second structural string. A second conductor bundle is connected to the central support by a third structural string and to the second mounting point by a fourth structural string. A fifth structural string, perpendicular to the crossarm and extending between the first conductor bundle and the second conductor bundle, connects the central mounting point to a third conductor bundle that is further from the crossarm than the first conductor bundle and the second conductor bundle. A sixth structural string connects the vertical shaft to the third conductor bundle.

The present disclosure discloses a composite crossarm and a power transmission tower. The composite crossarm includes two post insulators and two suspension insulators. Of the two post insulators and the two suspension insulators, one ends are configured to be connected to a tower body of a power transmission tower, and the other ends are connected together to form an end portion of the composite crossarm to hang a power transmission line. The two suspension insulators are located on same sides of the two post insulators and respectively arranged adjacent to the two post insulators. At the same time, an angle between the two post insulators ranges from 20? to 50?, and an angle between the post insulator and the suspension insulator adjacent thereto ranges from 15? to 45?. The composite crossarm according to the present disclosure is highly stable and convenient to for mounting grading ring.

An avian streamer deterrent system includes an electric power line support structure coupled to a plurality of conducting wires. Each conducting wire of the plurality of conducting wires is coupled to an insulator. At least one avian streamer deterrent is disposed above the insulator of at least one of the conducting wires of the plurality of conducting wires. The at least one avian streamer deterrent may be disposed on a that is absent an insulator and situated above the plurality of conducting wires. The at least one avian streamer deterrent or an additional avian streamer deterrent may extend over one or more jumpers coupling at least a first conducting wire of the plurality of conducting wires to a second conducting wire of the plurality of conducting wires. In addition, the at least one avian streamer deterrent may comprise a rotatable configuration or a collapsible configuration.

A helical jumper connector includes a helical support member configured to support a wire. The helical support member includes a first leg having a first helical winding and a second leg having a second helical winding that defines a second axial opening. The first axial opening and the second axial opening are coaxial with the wire when the first helical winding and the second helical winding are wrapped around the wire and cooperatively engage with one another to support the wire. A jumper casting is configured to receive the helical support member. The helical support member and the jumper casting are electrically conductive such that the helical jumper connector forms an electrically conductive pathway to carry electrical current from the wire. A method of making a helical jumper connector assembly includes applying a compression force to a helical jumper connector comprising a helical support member received in a jumper casting.