The Long Island Sound submarine cable interconnection

This article discusses the design and installation of a 300-MVA, 19-km, 138-kV, high-pressure, oil-filled submarine cable for spanning the Long Island Sound between Norwalk, Conn., and Northport, N.Y. The use of self-contained, oil-filled cable for this crossing represents a major contribution in the field of cable technology. This long-desired intertie became a reality with the development of new low-viscosity impregnants?capable of coping with severe hydraulic transients?and with improved design, manufacturing, and installation techniques. The associated terminal facilities and system considerations are also described.