MANUFACTURE OF REINFORCED INSULATOR BLOCK FOR POWER CABLE CONNECTING SECTION AND STRUCTURE OF POWER CABLE CONNECTING SECTION USING THE BLOCK

摘要

PROBLEM TO BE SOLVED: To prevent the occurrence of voids by improving the mechanical strength at a boundary. ;SOLUTION: The inside diameter of a reinforced insulating block 1 is made smaller than the outside diameter of a power cable connecting section 2, and at the same time, the molded block 1 is crosslinked. After crosslinking, the by-product generated by the crosslinking reaction is removed by volatilization by keeping the block 1 in a state, where the block 1 is heated to a temperature lower than the melting point. Then the block 1 is expanded, so that the inside diameter of the block 1 can become larger than the outside diameter of the connecting section 2 by heating the block to a temperature higher than the melting point, and the internal surface of the expanded block 1 is impregnated with a crosslinking agent after the block 1 has been cooled.;COPYRIGHT: (C)1998,JPO