Abstract: A method for filling an electrical device with a multi-component insulating filler, including the steps of: mixing at least two components of insulating filler each with compressible microspheres; measuring at regular intervals a viscosity of each of the at least two components of insulating filler mixed with the microspheres until each of the at least two components of insulating filler have a substantially uniform viscosity; mixing the at least two components of insulating filler together in order to obtain a multi-component insulating filler; extracting air present in a free volume V of the electrical device using a vacuum pump; filling the free volume V of the electrical device with the multi-component insulating filler until the free volume V of the electrical device is completely filled; and injecting an additional amount of the multi-component insulating filler in order to develop overpressure.

Abstract: The present invention relates to a pole head for supporting conductors on poles for medium- and high-voltage overhead power lines, having at least one tubular portion which has a structural function, is made of electrically insulating composite material, and is fixed to a supporting structure. Coupling flanges for supporting the electrical conductors are connected to the at least one tubular portion and are mutually spaced along the axis of the tubular portion.

Abstract: An overhead-line mast includes a bar-shaped and insulated mast head, current-carrying conductors fastened to insulators of the insulated mast head and a ground conductor disposed on a mast tip of the insulated mast head. The ground conductor is connected electrically to a neutral point on a mast base by a ground conductor connection extending in the interior of the overhead-line mast. The ground conductor connection is sheathed by an insulating layer. The insulating layer is covered in each case by an insulating cone at the level of the current-carrying conductors. An annular electrode extends in or on each insulating cone. An insulating filler is inserted between the insulating layer and the insulating cones on one hand and the insulators of the insulated mast head on the other hand.