Abstract: Curable epoxy resin composition including an epoxy resin component and a filler component and optionally a hardener component and further additives, wherein (a) the curable epoxy resin composition has been produced by separately mixing together at least a part of the epoxy resin component and at least a part of the filler component and optionally some or all of the optional additives, prior to mixing theses components with the optional hardener component and with any remaining optional additives present in the curable epoxy resin composition, and that (b) the mixing together of at least a part of the epoxy resin component and at least a part of the filler component and optionally some or all of the optional additives has been carried out at a temperature higher than the casting temperature of the curable epoxy resin composition, and electrical insulation systems made therefrom.

Abstract: An exemplary high-voltage outdoor bushing is disclosed which includes a conductor extended along an axis, a condenser core and an electrically insulating polymeric weather protection housing molded on the condenser core. The condenser core can contain an electrically insulating tape which is wound in spiral form around the conductor. Capacitance grading insertions can be arranged between successive windings of the tape. A cured polymeric insulating matrix embeds the wound tape and the capacitive grading insertions. A moisture diffusion barrier can be incorporated inside the condenser core prior to molding the weather protection housing.

Abstract: An exemplary high-voltage outdoor bushing is disclosed which includes a conductor extended along an axis, a condenser core and an electrically insulating polymeric weather protection housing molded on the condenser core. The condenser core can contain an electrically insulating tape which is wound in spiral form around the conductor. Capacitance grading insertions can be arranged between successive windings of the tape. A cured polymeric insulating matrix embeds the wound tape and the capacitive grading insertions. A moisture diffusion barrier can be incorporated inside the condenser core prior to molding the weather protection housing.