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Self Contained Oil-Filled Power Cable

powercables-oilfilled-imageSince 1961 Sumitomo Electric has supplied and installed a great number of OF cables up to 800kV in Japan and foreign countries. In the mid 70's Sumitomo supplied 20km (12.5 miles) of 525kV SCOF cable to the U.S Department of the Interior Bureau of Reclamation (USBR) for its Grand Coulee Dam project. The cable system was installed and taken over by USBR in November 1977.