Abstract: 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.

Abstract: 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.

Abstract: Embodiments of the invention are directed to a method for manufacturing a composite polymer insulator. The method includes: providing an elongate core having a core axis, the core including a first core main section, a second core main section, and a core midsection axially interposed between the first and second core main sections; and mounting a joint sleeve around the core midsection. The method further includes molding a polymeric first housing onto the core such that: the first housing surrounds the first core main section; and a joint section the first housing overlaps and bonds to the joint sleeve. The method further includes molding a polymeric second housing onto the core such that: the second housing surrounds the second core main section; and a joint section of the second housing overlaps and bonds to the joint sleeve.

Abstract: An insulator system includes an insulator assembly including: a first insulator; a second insulator; a first end fitting at a first end portion of the first insulator; a second end fitting at a second end portion of the first insulator; a third end fitting at a first end portion of the second insulator and operatively coupled to the second end fitting; a fourth end fitting at a second end portion of the second insulator; a first cement layer between the first insulator and the first end fitting; a second cement layer between the first insulator and the second end fitting; a third cement layer between the second insulator and the third end fitting; and a fourth cement layer between the second insulator and the fourth end fitting. An electrically insulating layer is on the first cement layer and extends between the first insulator and the first end fitting.

Abstract: Embodiments of the invention are directed to a method for manufacturing a composite polymer insulator. The method includes: providing an elongate core having a core axis, the core including a first core main section, a second core main section, and a core midsection axially interposed between the first and second core main sections; and mounting a joint sleeve around the core midsection. The method further includes molding a polymeric first housing onto the core such that: the first housing surrounds the first core main section; and a joint section the first housing overlaps and bonds to the joint sleeve. The method further includes molding a polymeric second housing onto the core such that: the second housing surrounds the second core main section; and a joint section of the second housing overlaps and bonds to the joint sleeve.

Abstract: An insulator system includes an insulator assembly including: a first insulator; a second insulator; a first end fitting at a first end portion of the first insulator; a second end fitting at a second end portion of the first insulator; a third end fitting at a first end portion of the second insulator and operatively coupled to the second end fitting; a fourth end fitting at a second end portion of the second insulator; a first cement layer between the first insulator and the first end fitting; a second cement layer between the first insulator and the second end fitting; a third cement layer between the second insulator and the third end fitting; and a fourth cement layer between the second insulator and the fourth end fitting. An electrically insulating layer is on the first cement layer and extends between the first insulator and the first end fitting.