Method for locating a fault point (F) on a high-voltage three-phase AC cable comprising a first end , a second end , and at least one main section (MP 1 , MP 2 , MP 3 ) extending between said ends , the cable comprising one conductor (R, S, T) per phase and three shields (S A , S B , S C ; S R , S S , S T ) associated with said conductors (R, S, T), said shields (S A , S B , S C ; S R , S S , S T ) being attached to one another and connected to ground (G) at both ends of each main section (MP 1 , MP 2 , MP 3 ), the method comprising the following steps: - measuring the conductor current ( R1 , I S1 , I T1 , I R2 , I S2 , I T2 ) circulating through each conductor (R, S, T) both at the first end and at the second end of the cable , - Measuring the shield current (I SA1 , I SB1 , I SC1 , I SA2 , I SB2 , I SC2 , I SA3 , I SB3 , I SC3 , I SA4 , I SB4 , I SC4 ; I SR1 , I SS1 , I ST1 ; I SR2 , I SS2 , I ST2 ) in the vicinity of the connection points to ground (G) of the shields (S A , S B , S C ), - determining the conductor (R, S, T) in fault based on the previously measured conductor currents (I R1 , I S1 , I T1 , I R2 , I S2 , I T2 ), - in the event that the cable comprises more than one main section (MP 1 , MP 2 , MP 3 ), determining the main section (MP 1 , MP 2 , MP 3 ) in fault based on the previously measured shield currents (I SA1 , I SB1 , I SC1 , I SA2 , I SB2 , I SC2 , I SA3 , I SB3 , I SC3 , I SA4 , I SB4 , I SC4 ; I SR1 , I SS1 , I ST1 ; I SR2 , I SS2 , I ST2 ), and - locating the fault point (F) by means of a model of the shields (S A , S B , S C ; S R , S S , S T ) of the main section (MP 1 , MP 2 , MP 3 ) in fault, taking into account that the shields (S A , S B , S C ; S R , S S , S T ) are attached to one another at the ends of said main part (MP 1 , MP 2 , MP 3 ) in fault such that three closed nets in which the sum of voltages is zero are formed in the model, the only unknown being the distance (x) to the fault point (F). - measuring the conductor current ( R1 , I S1 , I T1 , I R2 , I S2 , I T2 ) circulating through each conductor (R, S, T) both at the first end and at the second end of the cable , - Measuring the shield current (I SA1 , I SB1 , I SC1 , I SA2 , I SB2 , I SC2 , I SA3 , I SB3 , I SC3 , I SA4 , I SB4 , I SC4 ; I SR1 , I SS1 , I ST1 ; I SR2 , I SS2 , I ST2 ) in the vicinity of the connection points to ground (G) of the shields (S A , S B , S C ), - determining the conductor (R, S, T) in fault based on the previously measured conductor currents (I R1 , I S1 , I T1 , I R2 , I S2 , I T2 ), - in the event that the cable comprises more than one main section (MP 1 , MP 2 , MP 3 ), determining the main section (MP 1 , MP 2 , MP 3 ) in fault based on the previously measured shield currents (I SA1 , I SB1 , I SC1 , I SA2 , I SB2 , I SC2 , I SA3 , I SB3 , I SC3 , I SA4 , I SB4 , I SC4 ; I SR1 , I SS1 , I ST1 ; I SR2 , I SS2 , I ST2 ), and - locating the fault point (F) by means of a model of the shields (S A , S B , S C ; S R , S S , S T ) of the main section (MP 1 , MP 2 , MP 3 ) in fault, taking into account that the shields (S A , S B , S C ; S R , S S , S T ) are attached to one another at the ends of said main part (MP 1 , MP 2 , MP 3 ) in fault such that three closed nets in which the sum of voltages is zero are formed in the model, the only unknown being the distance (x) to the fault point (F). <EOS>