Cable Power Facility

The power supplies for the SD submarine cable system 1 must be designed to provide an uninterrupted flow of precisely controlled, transient-free operating power if the long life and stable transmission characteristics inherent in the submerged repeater design are to be obtained. Ideally, the power system should be capable of providing this power without interruption for the life of the cable system. Equally important, is the need for reliable automatic alarm and shutdown circuits. These signal the presence of abnormal cable currents and voltages and turn down the power if hazardous levels are reached, whether the cause of the trouble is within or external to the power plant.