Electricity: conductors and insulators – With fluids or vacuum – Conduit or cable joints
Patent
1979-05-23
1980-09-30
Envall, Jr., Roy N.
Electricity: conductors and insulators
With fluids or vacuum
Conduit or cable joints
174 21R, H02G 1524
Patent
active
042257468
ABSTRACT:
A stop or through joint for high voltage, oil filled electric cables having a central conductor with an oil duct, insulation around the cable conductor and a sheath around the insulation which is slightly spaced, at least in part, from the insulation. The bared conductor ends are electrically joined and are surrounded by insulation which does not have a deliberately added oil channel for supplying oil to the duct. The joint is surrounded by a conductive casing, and within the casing, the cable insulation and the space between the insulation and the sheath has oil under pressure supplied thereto so that with variations of the operating conditions which cause oil flow in the cables, oil flows through the cable insulation so as to maintain the necessary oil content of the cables. Also, a cable system with a plurality of such joints intermediate the terminal ends of the cable system.
REFERENCES:
patent: 2650260 (1953-08-01), Sesini et al.
patent: 3051770 (1962-08-01), Palmieri
patent: 4104479 (1978-08-01), Bahder et al.
Envall Jr. Roy N.
Pirelli General Cable Works Limited
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