| 摘要 |
PURPOSE:To obtain the apparatus having a protecting function against inside troubles and being small-sized and light in weight by housing a connection lead in the inner part of the apparatus partitioned oil-tightly from a main body tank, by providing an inactive gas chamber in the upper part thereof and by fitting an earthing electrode shield between the gas chamber and the lead. CONSTITUTION:A cable connection box 6 which is partitioned oil-tightly from the main body tank 2 housing the main body 1 of the apparatus with an insulation spacer or an inner-oil wall piercing bushing 3 and houses the connection lead 5 inside is filled up with insulation oil and provided with the inactive gas chamber 7 for reducing the rise of inside pressufe in the upper part thereof. Between the gas chamber 7 and the connection lead 5 the earthing electrode shield 12 formed, for instance, of a wire net is fitted, and between the earthing shield 12 and the gas chamber 7 a sufficient quantity of oil enough to absorb the expansion and shrinkage of the insulation oil caused by the change in temperature inside an oil chamber is maintained. By this constitution, the protecting function against inside troubles can be fulfilled sufficiently and, in addition, the apparatus can be made small- sized and light in weight. |
