| 摘要 |
<p>Risk that metal particles carried by flowing oil in an oil-filled cable joint or termination will settle along an oil path 15 between a cable conductor 1 and the space 20 bounded by the joint or termination enclosure 12 is substantially reduced by making at least part, and preferably the whole, of the boundary wall of the path of a fibrous insulating material, e.g., paper. Fibres of the boundary wall so formed protrude into the path and restrict mobility of metal particles carried by the flowing oil; some metal particles will penetrate the fibrous insulating material which will also absorb from the oil some types of dissolved contamination, e.g., moisture. The oil path 15 may extend through a body 14 of fibrous insulating material built up around the conductor joint or termination as shown in Figure 1 or, over at least part of its length, it may be formed between such a body 14 of fibrous insulating material and a preformed body 11 of cast resin.</p> |
