Abstract: An electrical heating cable with a first power supply conductor, a second power supply conductor, and a third power supply conductor. Each of the first, second and third power supply conductors extend along a length of the cable. The electrical heating cable also includes an electrically conductive heating element body, wherein the first, second and third power supply conductors are electrically coupled to each other via the electrically conductive heating element body. The second power supply conductor is provided with a layer of electrically insulating material which covers only a part of a surface of the second power supply conductor. The layer is provided between the surface of the second power supply conductor and the electrically conductive heating element body.

Abstract: An electrical heating cable with a first power supply conductor, a second power supply conductor, and a third power supply conductor. Each of the first, second and third power supply conductors extend along a length of the cable. The electrical heating cable also includes an electrically conductive heating element body, wherein the first, second and third power supply conductors are electrically coupled to each other via the electrically conductive heating element body. The second power supply conductor is provided with a layer of electrically insulating material which covers only a part of a surface of the second power supply conductor. The layer is provided between the surface of the second power supply conductor and the electrically conductive heating element body.

Abstract: According to a first aspect of the present invention, there is provided a self-regulating electrical heating cable comprising: a first power supply conductor extending along the length of the cable; a second power supply conductor extending along the length of the cable; a third power supply conductor extending along the length of the cable; the first and second power supply conductors being in electrical connection with each other via a first electrically conductive heating element body having a positive temperature coefficient of resistance, and the second and third power supply conductors being in electrical connection with each other via a second electrically conductive heating element body having a positive temperature coefficient of resistance, and wherein, in use, the first, second and third power supply conductors are not physically connected to one another.

Abstract: According to a first aspect of the present invention, there is provided a self-regulating electrical heating cable comprising: a first power supply conductor extending along the length of the cable; a second power supply conductor extending along the length of the cable; a third power supply conductor extending along the length of the cable; the first and second power supply conductors being in electrical connection with each other via a first electrically conductive heating element body having a positive temperature coefficient of resistance, and the second and third power supply conductors being in electrical connection with each other via a second electrically conductive heating element body having a positive temperature coefficient of resistance, and wherein, in use, the first, second and third power supply conductors are not physically connected to one another.

Abstract: A conduit comprising a pipe, an electrical heater extending along the length of the pipe, and a thermally insulating jacket extending around the pipe and heater. The pipe comprises a plastic inner tube. The plastic inner tube is received within a deformable metal tube such that the plastics inner tube and deformable metal tube form a composite double-walled structure.

Abstract: A conduit comprising a pipe, an electrical heater extending along the length of the pipe, and a thermally insulating jacket extending around the pipe and heater. The pipe comprises a plastic inner tube. The plastic inner tube is received within a deformable metal tube such that the plastics inner tube and deformable metal tube form a composite double-walled structure.

Abstract: Rigid wound or reelable pipe (1) for transporting hydrocarbons having a single-walled or double-walled envelope comprising two coaxial pipes, internal (2) and external (3), respectively, separated by an annular space, comprising at least one electrical heating cable (10) capable of being subjected to an elongation of 0.5% without sustaining damage and produced, for example, in the form of a central conducting braided cable surrounded by an electrically insulating sheath. The materials comprising the cable are subjected to elastically deformation by remaining below 15% of their elastic limit and preferably below 5%.