METHOD OF MANUFACTURING A POWER CABLE

A method of manufacturing a power cable, comprising: a) providing a conductor, b) providing an insulation system comprising an inner semiconducting layer arranged around the conductor, an insulation layer arranged around the inner semiconducting layer, and an outer semiconducting layer arranged around the insulation layer, c) providing an elastic mechanical support layer around the outer semiconducting layer, d) compressing the mechanical support layer radially by means of a compression element, e) welding opposing edges of a metallic sheet arranged radially outside of the mechanical support layer longitudinally to form a metallic water blocking layer radially spaced apart from the mechanical support layer in the radially compressed state, and f) expanding the mechanical support layer by releasing the compression element from compressing the mechanical support layer, causing the mechanical support layer to support the metallic water blocking layer.