| 摘要 |
An electric cable having a fluid-tight, metal sheath containing a plurality of cores without oil ducts, each including a conductor surrounded by insulation, and a separate tubular member adjacent and contacting two of the cores and having an oil duct of a cross-sectional area at least equal to the cross-sectional area of the sum of the oil duct cross-sectional areas normally included in each core. The spaces between the tubular member and the cores and between the cores, the tubular member and the sheath are filled with an insulating filler, and the insulation of the cores and the filler are impregnated with an insulating oil and the duct of the tubular member is filled with the insulating oil. The sheath contacts the outer surfaces of the tubular member and the cores, and the oil duct of the tubular member contains a plurality of longitudinally spaced, oil flow restrictors. |
