Abstract: An electric insulation device, including a chamber and an electrically insulating element formed by a cast polymer solidified into an elastic state inside the chamber. The electrically insulating element includes a plurality of particles of a ceramic that has a higher thermal conductivity than the one of the polymer.

Abstract: A high temperature vulcanized silicone rubber is disclosed and includes a high temperature vulcanized silicone rubber as a silicone base and melamine cyanurate as a filler and at least one inorganic filler which is different from melamine cyanurate, and optionally further additives. A total filler content can be within a range of 40 parts (by weight) to 230 parts (by weight) per 100 parts (by weight) of silicone base; wherein (i) the melamine cyanurate is present within a range of 2 parts (by weight) to 40 parts (by weight) per 100 parts (by weight) of silicone base; and (ii) the at least one inorganic filler is an electrical insulator.

Abstract: An electric insulation material including a thermoplastic matrix. The material includes a hydrophobic agent embedded in the matrix.

Abstract: An electrical insulating composition that can be used in high voltage applications. The electrically insulating composition includes silicone rubber and has improved hydrophobic stability over other silicone rubbers. The material is particularly suited to be used in high voltage (>1 kV) composite insulators.

Abstract: The bushing has a conductor and a core surrounding the conductor. The core comprises a sheet-like spacer, wherein the spacer contains filler particles. The bushing can be a resin-impregnated graded bushing impregnated with an electrically insulating matrix material. The spacer may comprise paper, in particular creped paper. The filler particles can be electrically insulating or semiconductive particles. An increased thermal conductivity of the core can be achieved.