Abstract: A series connected capacitive graded high voltage cable terminator and suspension insulator made up of a number of individual modules each made by molding an insulating material between and around two flat, parallel plates molded of conductive material. The modules are connected in series by stacking them and the cable shield is introduced at one end while the bare conductor emerges from the stack cap. The electrical stress is uniformly divided by the number of capacitors in the series. The stack can also be used to suspend a bare high voltage conductor from a grounded tower.

Abstract: An end fitting with optimized weight for supporting an end of a device, such as an insulator, placed under tension. The end fitting has a mounting sleeve for coupling the end fitting to a core member, a mounting hole for receiving a cylindrical mounting pin therethrough and a cutout or removed portion positioned between the mounting hole and the mounting sleeve for optimizing the weight of the end fitting. The mounting hole can optionally be provided with a pair of contacting points spaced laterally relative to the vector line of force to redirect the tensile load applied to the end fitting by a mounting pin located in the mounting hole. The end fitting is especially useful in insulators subjected to tensile loads.

Abstract: An explosion-proof porcelain housing for a gas-filled insulating apparatus includes a hollow porcelain housing body having a tapered inner surface, and a resin lined on the inner surface of the porcelain housing body. The thickness of the resin lining decreases along the tapered inner surface.

Abstract: An insulator for use in a suspension-type line arrester that supports a transmission line is disclosed. Such line arresters have a plurality of insulators connected in a string. The insulators have linking members configured to prevent relative rotation between adjacent insulators in the line arrester's insulator string.

Abstract: An electrical assembly, such as an insulator or a surge arrester, utilizing a pair of end collars for coupling an elastomeric weathershed housing to a pair of metallic end fittings, and for reducing electrical stress at the interface of the ends of the weathershed housing and the end fittings, and for sealing the ends of the weathershed housing to the end fittings. In particular, a radially directed force is applied to the weathershed housing by insertion of the core member into the axial bore of the weathershed housing causing radial outward expansion of the weathershed housing into intimate contact with the end collars. Also, each of the ends of the weathershed housing is held in contact against the inner end of the respective end fitting to seal the interface therebetween. Accordingly, a watertight seal is created at the interface between each of the end fittings and the ends of the weathershed housings.

Abstract: An electrical assembly, such as an insulator or a surge arrester, utilizing a plurality of elastomeric weathershed housings for enclosing a core member therein. The elastomeric weathershed housings are coupled and sealed together by an insulating collar. A radially directed force is applied to the collar or the weathershed housings to cause intimate contact between the collar and the end portions of the weathershed housings to provide a weathertight seal. In the preferred embodiment, the radially directed force is provided by insertion of the core member into the axial bore of the weathershed housings causing radial outward expansion of the weathershed housings into intimate contact with the insulating collar. In another embodiment, the radially directed force is provided by a heat shrinkable insulating collar, which is shrunk about the end portions of adjacent weathershed housings. The core member can be an insulating rod or a plurality of electrical components, such as metal oxide varistors.

Abstract: The invention relates to an outdoor high voltage insulator, wherein the flashover due to the effect of external layers or deposits of pollution is prevented or at least shifted in the direction of higher degree of pollution. A resistance element (1) is connected in series with the insulator itself (2), with the leakage current prior to flashover producing a voltage drop over the resistance element (1). This voltage drop reduces the voltage on the insulator and prevents or retards flashover.

Abstract: A conductor support member includes an external surface having a first portion thereon. The first portion is shaped to generate a localized increase in voltage gradient. Shielding means including surfaces intersecting to define a sharp edge are provided to promote a negative corona discharge adjacent the first portion. The said negative corona discharge produces a positive space charge to reduce the voltage gradient at the first portion. This inhibits the generation of positive corona discharge.

Abstract: A corona shield employing a jumper assembly is provided for tension insulator strings which comprises a plurality of jumper wires extending over the energized ends of an insulator string for shielding the ends thereof and line hardware on the energized side, thereby preventing corona discharge therefrom.

Abstract: A corona shield for tension insulator assemblies for use in extra-high and ultra-high voltage overhead transmission lines comprises shielding rings at anchored ends of conductors consisting of a plurality of rings arranged in planes substantially along the longitudinal direction of the conductors so as to surround them and further at least one ring horn arranged perpendicular to the conductors at energized ends of the insulator strings anchoring the conductors, thereby preventing corona discharge from the insulators and line hardware on the energized side of insulator assemblies.

Abstract: An improved insulator of the type having a dielectric body with a mounting pin below and a mounting cap above, where the mounting cap is capable of receiving and holding the mounting pin, and wherein the improvement comprises an upper metallic bowl-shaped member to dissipate high electric field concentrations and to protect the insulator from contamination, and a lower metallic member to dissipate high electric field concentrations. The insulator is adapted to be linked together with like insulators to form a chain of insulators.

Abstract: An electrical insulator composed of one or more electrical insulating skirts or sheds or shells at least some of which skirts or sheds or shells have a plurality of discrete conductive regions at one surface thereof, the discrete conductive regions being appropriately arranged and sufficient in number to intercept an arc in the event of incipient flashover from proceeding radially past the discrete conductive regions, thereby to prevent said flashover.