Insulated electrical conductor and contacting method

摘要

An insulated electrical conductor for high voltage (10 to 800kV) windings comprises central conductive means and an outer semiconductive layer 18, a portion of which is coated with a coating comprising metal particles 20 for grounding purposes. The particles are preferably accelerated towards the outer layer 18 in a gas stream. A grounding wire may be connected to the coated outer layer by means of a resilient metallic spring member. A metal foil may be interposed between the semiconductive layer and the particles.