Abstract: A method of securing a corona ring for controlling a corona discharge, including inserting a support member of an insulator to be secured, between a first ring securing portion arranged integrally with the corona ring and a second ring securing portion arranged independently with respect to the first ring securing portion, and fixing the first ring securing portion and the second ring securing portion from each other. In this method, since a corona discharge ring improper mounting preventing apparatus is arranged on the first ring securing portion, one of the ring securing portions is preliminarily secured to the support member, a ring securing method at the seal portion of the support member is improved and/or a corona discharge ring improper mounting preventing apparatus is arranged on said support member it is not possible to fix the corona ring to the support member if the corona ring is secured in an incorrect position with respect to the support member.

Abstract: A corona control ring has a corona control ring main body and a water discharge hole having an elongated shape like a racetrack. The corona control ring main body includes a bottom portion and an inner wall portion and an outer wall portion respectively arranged at an inner edge portion and an outer edge portion of the bottom portion. The water discharge hole is arranged in the bottom portion. A depression portion is formed in the corona control ring main body by the inner wall portion, the outer wall portion and the bottom portion. Accordingly, the present invention provides a corona control ring which can suppress a corona discharge even during rain fall.

Abstract: An improved apparatus for deconcentrating an electric field surrounding a high voltage insulator. A clamp assembly centrally formed within a coronal ring permits positive placement of the coronal ring about an insulator end fitting. The clamping assembly comprises an integral clamp with a u-shaped opening for engaging a cylindrical portion of an insulator end fitting. A keeper clamp mounts superjacent to the integral clamp and a smaller second u-shaped opening engages a portion of the insulator end fitting having a smaller diameter. A captive fastener such as a bolt extends upwardly through the clamp and keeper clamp to secure the keeper clamp in position against the insulator end fitting and the integral clamp to secure the corona ring in position relative the insulator end fitting and sheds. The varied sized openings of the clamp and keeper clamp prevent inverted installation of the corona ring.

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: The aerostat-supported antenna/tether cable of a communication system is protected from destructive corona discharges by a dual corona ring assembly which attaches the feed cable of the transmitter to the antenna. The voltage divider assembly includes upper and lower corona rings which have a space between them which is an isolated and corona-free attachment point for the feed cable. By attaching the voltage divider assembly to the antenna/tether cable at about 12 to 15 feet above the ground, the base of the antenna/tether cable distributes the feed voltage along its length to levels below those voltage levels in which destructive ionization may occur.

Abstract: In order to prevent sparking or corona effects in the high voltage carrying parts of the outdoor high voltage circuit breaker, shielding electrodes are provided. The shielding electrodes are angular frames. The frames are formed of hollow cylindrical straight rods and of substantially spherical corner pieces which connect the rods with each other. With this design, there are minimum costs of the component parts for shielding electrodes of varying size and shape.

Abstract: An electrical ignition system for a fuel buring engine has a high voltage ignition cable (60) that includes an electrically conductive shield (64) circumjacent an electrical axial conductor (62). An AC or DC power source (70, 70a, 70b) is connected to the electrically conductive shield to produce an electromagnetic force field surrounding the electrical axial conductor. Such field retains electromagnetic radiation emanated by the electrical axial conductor during ignition of the igniter (10) within the confines of the shield (64). Igniter (10) may have a ceramic insulator (30) with a synthetic resin polymer sleeve (50) covering a portion of the ceramic insulator, or insulator (30) may be made entirely of the synthetic resin polymer material to suppress corona generated by current flowing through the axial electrode (40) of the igniter during each ignition period.

Abstract: A dielectric corona ring to provide field shaping by spreading or deconceating an electric field for reduction or elimination of ionization of air near a high voltage insulator.

Abstract: A piezoelectric ceramic cylinder is positioned between a vibratile piston and a matched rigid mass element. To prevent corona, the electrodes on the ceramic cylinder are covered with an insulating material in the region near the edges of the electrodes where a corona might otherwise form. A low-loss rubber compound and a molded rubber support cradles the transducer assembly. A special manufacturing technique uses a standard weight supported on the cylinder to affect the resonant frequency of the cylinder and enable them to be segregated into classes according to their resonant characteristics.

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.