Back-up pumping plant for oil filled power cables

Details Back-up pumping plant for oil filled power cables Back-up pumping plant for oil filled power cables

H - Electricity

02

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337/7

H02G 9/00 (2006.01) F04B 43/04 (2006.01) F04B 43/06 (2006.01) H01B 9/06 (2006.01)

Patent

CA 1168323

S. Ege - 8 ( Revision) -14- Abstract of the Disclosure Paper and oil insulated high voltage power cables rely on maintaining the insulating oil under pressure for its proper functioning. For this reason the cable installation includes a pumping plant or a pressure reservoir system. In case of submarine oil filled power cables it is important to prevent water from penetrating the cable in case of ruptured cable, and this is obtained by creating a small outflow of oil at the rupture point. A back-up system includes a gas driven membrane pump provided for ensuring such small outflow, and the proper functioning of the membrane pump is secured by introducing degasified oil at the drive side of the pump during the stand-by and test modes. DMQ:rb June 17, 1981

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