| 摘要 |
A direct current cable, sealing end installation, the cable having a bared conductor end, a first semi-conductive screen around the conductor, a layer of insulating material around the screen, a second semi-conductive screen around the insulating layer and a conductive sheath around the second screen. The sheath the second screen and the insulating layer are stripped back to expose a portion of the second screen, a portion of the first screen and an intermediate length of the insulating layer. A hollow, cylindrical container with an inner diameter larger than the diameter of the cable extends lengthwise of the cable and from adjacent the bared conductor end to adjacent the sheath; and the container end adjacent the sheath has a liquid-tight connection to the sheath. The container is filled with liquid having a resistivity in the range from 108 to 106 ohm-meter to below the bared conductor end. Opposite ends of the liquid are respectively conductively connected to the bared conductor end and to the sheath. The length of the container and the liquid are sufficient to withstand the cable voltage between the conductor and the sheath. The conductor end and the insulating layer may be covered with tapes to prevent contact of the liquid therewith. |
