High-voltage rubber-insulated submarine power cables

摘要

Submarine power cables in the United States are frequently made with rubber insulation for voltages up to 35 kV phase-to-phase. The choice of rubber rather than oil-impregnated paper, and the elimination of the lead sheath, is usually governed by physical and chemical conditions rather than cost. The type of rubber insulation preferred is ????????oil base????????, an ozone-resisting compound having good electrical stability when exposed to water, heat and high voltage. The advantages of the longitudinal-strip method of insulation are described, together with details of tests, strand shielding and thermal problems.