| 摘要 |
A rejuvenation method for a cable used in a subsea environment comprises applying a bias signal to conducting elements 2a, 2b of the cable 2. The bias signal is controlled by control unit 10 and is selected so as to improve the insulation properties of the cable, such that, in the event of an electrical leakage current of predetermined magnitude flowing between the conducting element and a salt containing liquid of the subsea environment at a fault location, a voltage is applied promoting an electrochemical reaction between the conducting element and the liquid and resulting in the formation of a barrier material at the fault location restricting further leakage current flow and so enhancing the insulation resistance of the cable, the bias signal being selected such that the electrochemical reaction promoted by the bias signal maintains the presence of the barrier material 8 at the fault location. |
