A power cable having: a conductor and having: a first conductor section including an elongated first central element made of a first metal and a first outer metal structure made of a second metal surrounding the first central element, a second conductor section including the second metal, a weld metal located axially between the first conductor section and the second conductor section, wherein the first conductor section has a first axial end section extending to the weld metal, wherein the first axial end section includes: a central axially extending first metal member surrounded by the first outer metal structure, the first metal member including a first axial part made of the first metal and a second axial part made of the second metal, wherein the first axial part has a first end that is welded to the first central element and a second end that is welded to a first end of the second axial part, and wherein the second axial part has a second end, wherein the second end of the second axial part and the first outer metal structure are welded to the second conductor section by means of the weld metal.

An insulating resin composition includes at least a base resin, and an antioxidant. The base resin includes a polyolefin resin modified with a polar group-containing molecule and an unmodified polyolefin resin. The polar group-containing molecule is at least one selected from an unsaturated dicarboxylic acid, an unsaturated dicarboxylic acid anhydride, and an unsaturated dicarboxylic acid anhydride derivative. The base resin has a sea-island structure including a first phase having the unmodified polyolefin resin and a second phase provided in the first phase and having the modified polyolefin resin. The second phase has an average diameter of 2 ?m or less.

An insulating resin composition includes at least a base resin, and an antioxidant. The base resin includes a polyolefin resin modified with a polar group-containing molecule and an unmodified polyolefin resin. The polar group-containing molecule is at least one selected from an unsaturated dicarboxylic acid, an unsaturated dicarboxylic acid anhydride, and an unsaturated dicarboxylic acid anhydride derivative. The base resin has a sea-island structure including a first phase having the unmodified polyolefin resin and a second phase provided in the first phase and having the modified polyolefin resin. The second phase has an average diameter of 2 ?m or less.

A cable includes a core and a plurality of layers surrounding the core. In one embodiment, at least one of the layers surrounding the core includes multiple sets of phase conductors. The respective sets of phase conductors are electrically isolated from one another. Other cables are also provided.

A cable includes a core and a plurality of layers surrounding the core. In one embodiment, at least one of the layers surrounding the core includes multiple sets of phase conductors. The respective sets of phase conductors are electrically isolated from one another. Other cables are also provided.

In one embodiment, a cable includes a data transmission path disposed about an axial center of the cable and a power transmission path sheathing the data transmission path. The power transmission path includes a power layer and a ground layer, where the power transmission path is characterized by a distributed impedance having at least one frequency dependent impedance characteristic. In some implementations, ground layer shields the data transmission path from electromagnetic interference. In some implementations, the frequency dependent impedance characteristic of the power transmission path is characterized by a capacitance value that satisfies a capacitance criterion at frequencies above a first frequency level. In some implementations, the frequency dependent impedance characteristic of the power transmission path is characterized by an inductance value that satisfies a first inductance criterion at frequencies above a first frequency level.

A power cable including: a conductor, an insulation system having 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, a metallic water blocking layer arranged around the insulation system, including a first axial section, a second axial section, and an intermediate axial section made of a lead-free metal material which is different from a first metal material of at least one of the first axial section and the second axial section, the intermediate axial section being arranged between the first axial section and the second axial section, wherein the intermediate axial section is joined thermally along its entire inner or outer perimeter with each of the first axial section and the second axial section to obtain a watertight connection between the intermediate axial section and each of the first axial section and the second axial section, wherein the lead-free metal material has a lower yield strength than the first metal material.

A power cable including: a conductor, an insulation system having 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, a metallic water blocking layer arranged around the insulation system, including a first axial section, a second axial section, and an intermediate axial section made of a lead-free metal material which is different from a first metal material of at least one of the first axial section and the second axial section, the intermediate axial section being arranged between the first axial section and the second axial section, wherein the intermediate axial section is joined thermally along its entire inner or outer perimeter with each of the first axial section and the second axial section to obtain a watertight connection between the intermediate axial section and each of the first axial section and the second axial section, wherein the lead-free metal material has a lower yield strength than the first metal material.

A work machine, such as a hauler at a mining site, includes a conductor rod housing concentric metal tubes for receiving electrical power from a contactor sliding on a power rail. A head-end interface of the conductor rod proximate the work machine includes metallic rings spaced apart and extending circumferentially around the head-end interface. Bores pass longitudinally through the head-end interface and into cavities within the conductor rod between the concentric metal tubes. The metallic rings enable the delivery of electrical power radially from the conductor rod for powering the work machine, while the bores enable the delivery of pneumatic power longitudinally into the conductor rod for powering axial movement of the conductor rod.

A filler and a multicore cable includes a plurality of core portions, which includes a conductor, and a protective layer that surrounds the core portions, the filler being provided between the core portions and the protective layer of the multicore cable, the filler being characterized by including: frame portions including a first frame portion and a second frame portion, which are rotated by predetermined angles towards both sides about the center portion thereof and then incised; and a support portion provided between the frame portions so as to connect the frame portions to each other.