Abstract: A high-voltage homogeneous co-curing composite insulator includes first and second end fittings longitudinally separated by a spacer, a resin impregnated fiber core wound onto the end fittings and onto the spacer, and an outer sheath moulded onto the fiber core. Since the resin matrix of the core and the material used to form the outer sheath each include curable resins from the same family and are, therefore, chemically compatible, a chemical link exists between these two elements. The end fittings are provided with a relatively thin wall defining a mechanical fuse.

Abstract: A high-voltage bushing for insulating a conductor going through a metallic wall is described herein. To allow a conventional current transformer to be used to monitor the current flowing through the conductor, an external shield is embedded in the tubular body of the bushing and electrically connected to the metallic wall. An internal shield, also embedded in the tubular body of the bushing and electrically connected to the conductor, is provided to prevent the electric field to generate high levels of partial discharge in the air surrounding the conductor in the tubular body.