Sediver Societe Europeenne D'isolateurs En Verre Et Composite

Sediver

Sediver, Societe Europeene

Societe Anonyme Dite: Sediver Societe Europeenne D'isolateurs En Verre

Guy Thevenet

Denis Thuillier

Rene Parraud

Sandrine Prat

Emmanuel Brocard

Jean Marie George

A method of fabricating a composite insulator with a protective housing made of a polymer material incorporating an antioxidant and an antiozonant includes the step consisting in incorporating said antiozonant at a final concentration by weight lying in the range 0.005% to 1%, and said antioxidant at a final concentration by weight lying in the range 0.005% to 1%, said antiozonant being selected from the family of phenylenediamines, and said antioxidant being selected from the family of multifunctional phenolic antioxidants.

Method of fabricating an electric insulator with a polymer housing containing antiozonants

A method of manufacturing an electrical rod insulator for supporting an electrical conductor and comprising an insulating core obtained by molding and having a top end and a bottom end with a bore for receiving said rod in an axial direction, and covered in a molded covering having a groove for supporting said electrical conductor, wherein the core is molded in such a manner that its outside surface defines radial ribs extending along the axial direction from the top end of the core, said ribs being spaced apart from one another by a distance that is constant and substantially equal to the thickness of the core. The method makes it possible to avoid problems associated with molding large thicknesses when making a composite insulator having better mechanical and electrical properties at low cost.

Method of manufacturing a rod insulator

A sealed envelope based on a filamentary winding constituted by resin-impregnated glass fibers, for equipment likely to be subjected to large thermal stresses and thus to be the seat of internal excess pressures, the winding adhering to the outside surface of the equipment, wherein the outside surface of the equipment coated with the winding has fiber-free zones forming resin-filled gaps, with the percentage of the surface area not covered with fibers being not less than about 15%.

Sealed envelope based on a filamentary winding, and application to a

A rigid electrical insulator of the type having a base or a pin at its bottom and having at least one groove (18 or 19) for receiving an electrical cable at its top, the insulator being characterized by the fact that it includes at least one central rod (1) fixed at its bottom end to the base (5) or to the pin and at its top end to a rigid head (7) provided with at least one channel (8 or 9), the outside faces of the rod and of the rigid head (7) being covered in waterproof manner by a covering (10), with the head covering being of a flexible elastomer and the rod covering being selected from elastomers, resins, and varnishes, the groove (18 or 19) being defined by the channel (8 or 9) covered by its covering.

Rigid electrical insulator

A lightning arrester includes a stack of zinc oxide pellets (1) seated in counterbored recesses of intermediate tubular spacers (2) and two metal end fittings (3). This assembly is wrapped in a filament winding (4) at an angle of 80-90 degrees with the stack axis, thereby providing radial binding without significant axial compression. The filament winding adheres to the side surfaces of all the components of the stack.

Growing community of inventors

Beaumont les Randan, France

Guy Thevenet