The invention relates to a high-voltage insulator (1) comprising a long rod-type insulator (10) having a shaft (11) and circular shields (12) which are arranged thereon, comprising an insulator cap (2) at the top end of the long rod-type insulator (10) for fastening the high-voltage insulator (1) to a high-voltage mast, and comprising an arc protection ring (3) which surrounds the insulator cap (2) or that portion of the long rod-type insulator (10) which is situated closest to the insulator cap (2), wherein at least the topmost shield (12) of the long rod-type insulator (10), which shield is situated closest to the insulator cap (2), is designed as a protective shield (12) for the other shields (12), wherein the maximum diameter of the other shields (12) is at least 30 mm smaller than the inside diameter of the arc protection ring (3), the diameter of the at least one protective shield (12) is at least 10 mm smaller than the inside diameter of the arc protection ring (3), and the diameter of the at least one protective shield (12) is at least 20 mm larger than the maximum diameter of the other shields (12).

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.

Proposed is a trap-type live wire terminal insulation cap and an indirect live wire insulation method for a jumper wire using the same configured to easily insert and fix a jumper wire so that a charging part of the jumper wire is wrapped, insulated, and protected, in which the jumper wire is hung on an electric pole while a terminal charging part is exposed by cutting work during new installation, replacement, or repair of an electric wire. Furthermore, a plurality of gripping members forms a trap that is operated only in one direction, thereby being capable of preventing the electric wire from being separated and preventing safety incidents caused by high voltage current. Furthermore, the electric wire is capable of being easily fixed and released by a simple operation using an insulation stick, so that a safe and easy indirect live wire insulation method is realized.

The invention relates to an assembly for a cable passthrough in a wall, with a cable feedthrough (1; 20) including: a sealing section (2) made from a soft plastic component, the sealing section (2) having an opening (4) extending in the lengthwise direction for sealing accommodation of a cable that is to be passed through a housing wall; a strain relief (3) made from a hard plastic component, which is formed integrally onto the sealing section (2) and has a passthrough (5) in the lengthwise direction for the cable that is to be passed through, which passthrough (5) is aligned with the opening (4); and a slotting arrangement (6) which extends over the sealing section (2) and the strain relief (3) in the lengthwise direction of the cable feedthrough (1; 20) and through which the cable to be passed through can be introduced into the opening (4) and the passthrough (5) from the outside from a direction transverse to the lengthwise direction.

The invention relates to an assembly for a cable passthrough in a wall, with a cable feedthrough (1; 20) including: a sealing section (2) made from a soft plastic component, the sealing section (2) having an opening (4) extending in the lengthwise direction for sealing accommodation of a cable that is to be passed through a housing wall; a strain relief (3) made from a hard plastic component, which is formed integrally onto the sealing section (2) and has a passthrough (5) in the lengthwise direction for the cable that is to be passed through, which passthrough (5) is aligned with the opening (4); and a slotting arrangement (6) which extends over the sealing section (2) and the strain relief (3) in the lengthwise direction of the cable feedthrough (1; 20) and through which the cable to be passed through can be introduced into the opening (4) and the passthrough (5) from the outside from a direction transverse to the lengthwise direction.

Section insulator for an overhead contact line arranged for being placed between two isolated sections of said overhead contact line, said section insulator having an insulating element placed between two contact wires of two adjacent sections of an overhead line; two clamps respectively connected on one side to a respective contact wire and on the other side to a connecting plate arranged for being in turn connected to the insulating element, so that the tensile force due to the contact wires applies along the axis of the insulating bar; and supporting means directly connected to the insulating element through the connecting plates and arranged for supporting the section insulator to the overhead line.

Section insulator for an overhead contact line arranged for being placed between two isolated sections of said overhead contact line, said section insulator having an insulating element placed between two contact wires of two adjacent sections of an overhead line; two clamps respectively connected on one side to a respective contact wire and on the other side to a connecting plate arranged for being in turn connected to the insulating element, so that the tensile force due to the contact wires applies along the axis of the insulating bar; and supporting means directly connected to the insulating element through the connecting plates and arranged for supporting the section insulator to the overhead line.

A hanging arrangement for items of electrical operating equipment includes an upper fastener for suspending the hanging arrangement, a plurality of items of operating equipment being arranged so as to hang in a parallel manner from the upper fastener, and a lower fastener which is arranged so as to hang from the items of operating equipment. The items of operating equipment are connected to the fasteners in each case by flexible contact device.

A hanging arrangement for items of electrical operating equipment includes an upper fastener for suspending the hanging arrangement, a plurality of items of operating equipment being arranged so as to hang in a parallel manner from the upper fastener, and a lower fastener which is arranged so as to hang from the items of operating equipment. The items of operating equipment are connected to the fasteners in each case by flexible contact device.