The present invention relates to a safety cover for an electrical box mounted device. The safety cover is configured to be mounted between the device and a face plate to prevent access to exposed wires and energized terminals inside the electrical box when the face plate is removed.

For protecting wildlife from high voltage conductors proximate to a utility pole, dielectric covers are used to cover fuse cutouts, bushings, or other connections to insulators. Such covers include a vertical slot for receiving an energized wire so the cover can be installed using a hot-stick while the wire is energized. To eliminate leakage currents flowing across the cover under high voltage conditions, which previously led to localized melting of the cover, inner walls of the cover are molded that are laterally separated from the outer walls of the cover. The double wall design eliminates leakage currents due to the extra dielectric wall and air gap, and the inner wall is not subject to contamination from conductive pollutants. The double wall design also increases the insulating properties of the cover.

A support system for supporting power distribution or transmission lines includes a support pole having a first end and a second and a crossarm attached to the support pole, proximate the first end of the support pole. The crossarm has a first end, a second end and one or more side walls extending between the first and second ends of the crossarm. The side walls of the crossarm define an elongated interior space. The support system further includes an internal conduit formed in the interior space of the crossarm. The internal conduit extends along an axial direction of the crossarm. The internal conduit is made from insulative material.

The invention relates to a contamination protection device (10) for high-voltage insulators (3) and an arrangement consisting of the contamination protection device (10) and a high-voltage insulator (3). The contamination protection device (10) for high-voltage insulators (3) according to the invention is designed to be mounted on the insulator cap (5) of the high-voltage insulator (3) and comprises for this purpose a mounting region (20), which is designed to be interlockingly connected to the insulator cap (5) and comprises a through-opening (21) for the connecting element (7) of the insulator cap (5). A protective shield (30) is furthermore provided, which extends radially around the mounting region (20) in order to cover the high-voltage insulator (3). The arrangement comprises a high-voltage insulator (3) with an insulator cap (5) and a contamination protection device (10) disposed on the insulator cap (5), wherein the contamination protection device (10) is designed according to the invention and is connected to the insulator cap (5) by means of an interlocking connection.

The invention relates to a contamination protection device (10) for high-voltage insulators (3) and an arrangement consisting of the contamination protection device (10) and a high-voltage insulator (3). The contamination protection device (10) for high-voltage insulators (3) according to the invention is designed to be mounted on the insulator cap (5) of the high-voltage insulator (3) and comprises for this purpose a mounting region (20), which is designed to be interlockingly connected to the insulator cap (5) and comprises a through-opening (21) for the connecting element (7) of the insulator cap (5). A protective shield (30) is furthermore provided, which extends radially around the mounting region (20) in order to cover the high-voltage insulator (3). The arrangement comprises a high-voltage insulator (3) with an insulator cap (5) and a contamination protection device (10) disposed on the insulator cap (5), wherein the contamination protection device (10) is designed according to the invention and is connected to the insulator cap (5) by means of an interlocking connection.

An isolator fitting for an opening in a metallic rib of an aircraft wing. The isolator fitting has first isolator mountable to the rib to position a first isolator opening in alignment with the opening of the rib. A second isolator is mountable to the rib and has a nut housing segment defining a second isolator opening to be positioned in alignment with the opening of the rib. A conduit extends between a first end and a second end, and a nut is mountable about an outer surface of the conduit to abut against the first isolator and mount the conduit thereto. The conduit is positionable to extend through the opening of the rib and through the first and second isolator openings to position the nut within the nut housing segment of the second isolator such that the nut housing segment is positioned between the nut and the rib.

An isolator fitting for an opening in a metallic rib of an aircraft wing. The isolator fitting has first isolator mountable to the rib to position a first isolator opening in alignment with the opening of the rib. A second isolator is mountable to the rib and has a nut housing segment defining a second isolator opening to be positioned in alignment with the opening of the rib. A conduit extends between a first end and a second end, and a nut is mountable about an outer surface of the conduit to abut against the first isolator and mount the conduit thereto. The conduit is positionable to extend through the opening of the rib and through the first and second isolator openings to position the nut within the nut housing segment of the second isolator such that the nut housing segment is positioned between the nut and the rib.

The present disclosure describes an assembly adapted for mitigating dry band arcing on power distribution line insulators. The assembly includes a polymeric insulator for power distribution line having a core, two end fittings affixed to opposing ends of the core, and a housing circumferentially surrounding the core. The housing including an upper end section and a lower end section each overlapping a respective end fitting, and a series of axially spaced apart annular sheds projecting radially outwardly from an outer surface of the housing. The device further includes a cover having a main body including a sidewall and a top wall, the sidewall and the top wall together define a cavity. A lower edge of the sidewall defines a lower opening and the top wall includes an upper opening, both the lower and upper openings being in communication with the cavity. At least a portion of the upper end section of the housing is received through the upper opening of the cover and one or more of the annular sheds are received within the cavity of the cover. Methods of mitigating dry band arcing on power distribution line insulators are also described.

The present disclosure describes an assembly adapted for mitigating dry band arcing on power distribution line insulators. The assembly includes a polymeric insulator for power distribution line having a core, two end fittings affixed to opposing ends of the core, and a housing circumferentially surrounding the core. The housing including an upper end section and a lower end section each overlapping a respective end fitting, and a series of axially spaced apart annular sheds projecting radially outwardly from an outer surface of the housing. The device further includes a cover having a main body including a sidewall and a top wall, the sidewall and the top wall together define a cavity. A lower edge of the sidewall defines a lower opening and the top wall includes an upper opening, both the lower and upper openings being in communication with the cavity. At least a portion of the upper end section of the housing is received through the upper opening of the cover and one or more of the annular sheds are received within the cavity of the cover. Methods of mitigating dry band arcing on power distribution line insulators are also described.

Provided is a flange (100) connected to an end of an insulating tube (10), the flange includes a flange plate (110) abutting the end of the insulating tube, a groove (111) recessed toward inside of the insulating tube is disposed on the flange plate, the groove is connected to the insulating tube, an inflation valve (120) is disposed within the groove, the groove is filled with sealing material (130) which covers the inflation valve. Provided are also insulator and insulated support post using the flange. The flange, the insulator and insulated support post help to protect the inflation valve from external force and the groove is filled with the sealing material to ensure the sealing performance of the flange.