Abstract

In one embodiment, a fuse cutout cover has an integral roof portion. The roof portion covers the energized top of a fuse in a first type of cutout. An attachable roof extension covers the energized top of a fuse in a larger second type of cutout. By having the optional roof extension feature, the same cover may be used with two types of cutouts. The roof extension is connected using a cruxiform connector on the bottom surface of the roof portion that tightly fits into a hole in the roof extension. To prevent an air gap between the cruxiform connector and the hole in the roof extension, the bottom of the hole is sealed. This prevents flashovers through the air gap. As a result, electrical insulation between wildlife and the energized cutout is increased.

IPC Classes  ?

• H01B 17/00 - Insulators or insulating bodies characterised by their form
• H01B 17/56 - Insulating bodies
• H01R 33/95 - Holders with built-in electrical component with fuseHolders with built-in electrical component with thermal switch
• H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details

Abstract

A plastic retaining pin for being inserted through a retaining hole in a high voltage insulating cover has a compressible nose, with the wide part of the nose being larger than the retaining hole. The pin may be on the order of 3-12 inches long. The other end of the pin has a grasping ring for receiving the hook of a hot stick. Along the length of the body of the pin is a plurality of radial portions (e.g., six or more) extending outward from a centerline of the body. These radial portions may be skirts or ribs having a diameter less than the retaining hole in the cover. The skirts or ribs greatly increase the surface leakage distance along the body of the pin and also prevent conductive liquids flowing along the body, which may lead to a flashover.

IPC Classes  ?

• H01B 17/22 - Fastening of conductors to insulator
• H01H 85/165 - Casings
• H01H 85/042 - General constructions or structure of high voltage fuses, i.e. above 1,000 V

Abstract

A dielectric cover for a first type of insulator, supporting a conductor in an electrical distribution system, has a first height for covering high voltage portions of the first type of insulator. Thus, wildlife is protected from electrocution. In the event a second type of insulator is used, such as a K-Line type insulator having a relatively large top metal, an inexpensive dielectric shell is fitted over top of the cover to extend the dielectric height by at least one inch to fully laterally cover the top metal of the of the K-Line type insulator. Thus, different covers are not needed for covering both types of insulators, since only the shell is added for covering the second type of insulator. The shell may be provided in different sizes to accommodate different lengths of the top metal. Retaining pins are used to secure the cover over the insulator and conductor.

IPC Classes  ?

• H01B 17/38 - Fittings, e.g. capsFastenings therefor
• H01B 17/14 - Supporting insulators

Abstract

A dielectric cover for an insulator, supporting a high voltage conductor in an electrical distribution system, has holes for receiving retaining pins. The retaining pins are used to secure the cover over the insulator and conductor. Arched fenders, which may be circular or have a bottom opening, extend out from the cover and overlie the holes and ends of the pins. The fenders prevent birds roosting on the pin, increase the dielectric surface length between the top of the cover and the electrical conductor above the pins, and protect the pins from contamination issues which would reduce the dielectric properties of the pins. Contamination issues include birds defecating on the pins, which can create a conductive path between the bird and the inside of the cover, and atmospheric moisture such as rain, snow, and ice on the pins. Thus, wildlife is protected from electrocution.

IPC Classes  ?

• H02G 7/05 - Suspension arrangements or devices for electric cables or lines