Abstract: A soft silicone rubber insert is compressed between the interior surface of an insulator support in a gas-insulated cable and the outer surface of a soft aluminum central conductor which is supported within the interior surface of an opening in the insulator. The flexible rubber insert prevents scratching of the surface of the aluminum conductor and the production of aluminum particles during relative movement between the insulator and the aluminum tube.

Abstract: A high power high voltage transmission system consists of three highvoltage cables which are suspended from a transmission tower in insulated relationship with one another and with respect to the ground. Each of the cables is shown as a gas-insulated cable having a central high voltage conductor and an outer conductive housing which is insulated from the central conductor. The line-to-line voltage of the central conductors of each of the high voltage cables is 765 kV, while the potential between the outer conductive housings of each of the cables is 345 kV. The total right of way and height of the support tower is that needed for a conventional 345 kV transmission system even though the system is used to transmit 765 kV line-to-line voltage.

Abstract: An insulator disk for supporting a flexible conductor within a flexible gas-filled outer housing consists of three identical segments which latch together to form a complete disk around the central flexible conductor of the flexible cable. The outer peripheries of the three segments form a continuous outer periphery which is pressed into engagement with the interior surface of the grounded outer housing. Each of the identical segments has an extending latch at one of their outer surface ends and a latch receiving surface at the other of their outer surface ends, wherein the extending latch of one segment latches into the latch-receiving segment of an adjacent segment.