| 摘要 |
An insulated conductor for high voltage (10 kV to 800 kV) machine windings comprises one or more strands, an inner, first semiconducting layer surrounding the strands, a first insulating layer surrounding the inner, first semiconducting layer, an outer, second semiconducting layer (18) surrounding the first insulating layer, a continuous conductive means such as a copper strip (11) overlying a part only of the outer, second semiconducting layer (18) and a second insulating layer (15) surrounding the second semiconducting layer and the continuous conductive means (11). In a method of connecting the conductive means (11) to an equalising potential, a portion of the second insulating layer (15) is removed and the conductive means (11) is connected to the equalising potential through the opening (20) left by the removed portion.
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