A dynamic power cable or cables for submarine applications, wherein the dynamic power cable has at least one fibre reinforced thermoplastic composite sheath radially around a water barrier sheath providing reduced buckling of the water barrier sheath. The at least one fibre reinforced thermoplastic composite sheath has wound fibres embedded in a thermoplastic polymer.

A dynamic power cable or cables for submarine applications, wherein the dynamic power cable has at least one fibre reinforced thermoplastic composite sheath radially around a water barrier sheath providing reduced buckling of the water barrier sheath. The at least one fibre reinforced thermoplastic composite sheath has wound fibres embedded in a thermoplastic polymer.

An armoured power cable (10) comprises a cable core (11) and an armour layer (21) comprising a plurality of armouring wires (22) laid around the cable core (11), wherein at least 10% of the armouring wires (22) are wavy wires (23) having a zig-zag shape laying on the outer surface of the cable core (11).

An armoured power cable (10) comprises a cable core (11) and an armour layer (21) comprising a plurality of armouring wires (22) laid around the cable core (11), wherein at least 10% of the armouring wires (22) are wavy wires (23) having a zig-zag shape laying on the outer surface of the cable core (11).

A high voltage DC power cable designed for voltages of 320 kV or higher, including: a multi-wire conductor, an inner semiconducting layer arranged around the multi-wire conductor, the inner semiconducting layer forming a screen layer for the multi-wire conductor, a solid insulation system arranged around the inner semiconducting layer, and a water-blocking compound configured to restrict water migration into the high voltage DC power cable.

A high voltage DC power cable designed for voltages of 320 kV or higher, including: a multi-wire conductor, an inner semiconducting layer arranged around the multi-wire conductor, the inner semiconducting layer forming a screen layer for the multi-wire conductor, a solid insulation system arranged around the inner semiconducting layer, and a water-blocking compound configured to restrict water migration into the high voltage DC power cable.

Provided are a junction device and an undersea cable system capable of saving a branch line when a problem involving ground fault occurs in a power feed line on a branch station side. This junction device is inserted into a power feed line and a transmission line connecting first and second trunk stations and a branch station, and includes a switching means for controlling a switch so as to connect the transmission line between the branch station and the first or second trunk station when a current detection means detects that there is no longer current flowing through the power feed line between a junction unit and the branch station and when a first optical signal detection means detects an optical signal in the transmission line connecting the junction unit and the branch station.

Provided are a junction device and an undersea cable system capable of saving a branch line when a problem involving ground fault occurs in a power feed line on a branch station side. This junction device is inserted into a power feed line and a transmission line connecting first and second trunk stations and a branch station, and includes a switching means for controlling a switch so as to connect the transmission line between the branch station and the first or second trunk station when a current detection means detects that there is no longer current flowing through the power feed line between a junction unit and the branch station and when a first optical signal detection means detects an optical signal in the transmission line connecting the junction unit and the branch station.

The present disclosure relates to an armoured AC cable comprising at least one core comprising an electric conductor, and an armour surrounding the at least one core and comprising ferromagnetic wires, wherein the ferromagnetic wires are permanently magnetized with a remanent magnetic field which is uniform or variable along the cable length L. The present disclosure also relates to a process for producing an armoured AC cable, a method for improving the performances of an armoured AC cable, and a method for reducing losses in an armoured AC cable.

The present disclosure relates to an armoured AC cable comprising at least one core comprising an electric conductor, and an armour surrounding the at least one core and comprising ferromagnetic wires, wherein the ferromagnetic wires are permanently magnetized with a remanent magnetic field which is uniform or variable along the cable length L. The present disclosure also relates to a process for producing an armoured AC cable, a method for improving the performances of an armoured AC cable, and a method for reducing losses in an armoured AC cable.