Oil-filled cable system and joint for use therein

Details Oil-filled cable system and joint for use therein Oil-filled cable system and joint for use therein

H - Electricity

02

G

337/12

H02G 15/24 (2006.01)

Patent

CA 1131323

ABSTRACT In an oil-filled cable system, in which oil pressure tanks are connected to the oil system of the cable at the cable joints to compensate for expansion and contraction of the oil with load cycling, the pressure tanks connect with the in- terior of each joint casing (ports 15,16) and the joint casing interior is in direct communication, through the ends of the metal sheaths 4 of the cables, with respective spaces between the cable sheaths and their underlying insulating layers (which are impregnated with the cable oil in communication with the central duct of the cable conductors). The usual oil channel to the conductor ducts through the joint dielectric itself is avoided, as this occasionally represents a point of electrical weakness.

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