Method for insulation system restoration of a power cable

METHOD FOR INSULATION SYSTEM RESTORATION OF A POWER CABLE 5 A method of restoring an insulation system around a conductor of a power cable, using an induction heating system for heating the conductor of the power cable to restore an insulation system of the power cable, wherein the induction heating system comprises: a first high frequency, HF, coil configured to receive the power cable, a water-cooling system configured to 10 cool the first HF coil, and a power supply system configured to power the first HF coil, wherein the first HF coil is configured to be openable or splitable into at least two parts, the method comprising: a) placing a pressurisation and heating device around the power cable having a restoration insulation system layer arranged around the conductor, b) opening and placing the first 15 HF coil around the power cable adjacent to the pressurisation and heating device, c) closing the first HF coil, and d) heating the restoration insulation system layer by outer heating of the restoration insulation system layer inside the pressurisation and heating device and by inner heating of the restoration insulation system layer provided by feeding the first HF coil with current 20 from the power supply system inducing a current in the conductor, wherein the method comprises performing steps a)-d) for each of a plurality of restoration insulation system layers. (Fig. 4) 18785999_1 (GHMatters) P11917.AU 1 ~ ~~~9a _______ 3 9 C0# 9 j 9d Fig. 1 9e lib 5g 13b 9 5b Fia. 2 15a 19a 23 19b 21a/ 15b 25 17a 17c 17b 16252b Fig. 3 Placing a Opening b Closing c Heating d Fia. 4