A corona-resistant enameled round wire and preparation method of making such which is suitable for electric vehicle motors and has a copper conductor and an insulating layer. The insulating layer clads the copper conductor and has in sequence from inside to outside, a corona- resistant polyamideimide coating, a corona-resistant special resin coating, a corona-resistant polyimide coating, a corona-resistant modified silicone resin coating, and a corona-resistant polyamideimide coating.

Provided is a power cable, and more particularly, to an ultra-high-voltage underground or submarine cable. In detail, the present invention relates to a power cable which is capable of effectively preventing a decrease in dielectric strength due to penetration of copper powder from a copper conductor into an insulating layer, thereby increasing the lifespan thereof, is capable of preventing damage to insulating paper, semiconductor paper, etc. even when repeatedly bent and unfolded, thereby maintaining an interlayer structure formed by winding the insulating paper, the semiconductor paper, etc., and is capable of improving bendability, flexibility, installability, workability, etc.

A stretchable conductor includes a substrate with a first major surface, wherein the substrate is an elastomeric material. An elongate wire is on the first major surface of the substrate; the wire includes a first end and a second end, and further includes at least one arcuate region between the first end and the second end. At least one portion of the arcuate region of the wire in the region has a first surface area portion embedded in the surface of the substrate and a second surface area portion unembedded on the substrate and exposed in an amount sufficient to render at least an area of the substrate in the region electrically conductive. The unembedded second surface portion of the arcuate region may lie above or below a plane of the substrate. Composite articles including a stretchable conductor in durable electrical contact with a conductive fabric are also disclosed.

A multi-phase busbar for conducting electric energy includes: a base layer of an insulating material; a first conducting layer of a sheet metal; a first insulating layer of an insulating material arranged on the first conducting layer; a second conducting layer of a sheet metal arranged on the insulating layer; and a second layer of an electrically insulating material which is arranged on the second conducting layer. The first and/or second insulating layers include spacers, each spacer including a layer of a rigid insulating material. At least one of the spacers is glued to an electrically insulating coating of the first and/or second conducting layer, and/or at least one of the spacers is glued to an electrically conductive surface of an uncoated first and/or second conducting layer by an adhesive.

A lower insulating layer 122 bonded on lower surfaces 112 of conductors 110, a lower dielectric layer 132 bonded on a lower surface 122a of the insulating layer 122, a lower shield layer 142a bonded on a lower surface 132a of the lower dielectric layer 132, a terminal T in which the conductors 110 are exposed at an end in a longitudinal direction, a reinforcing plate 160 bonded on the lower surface 122a of the lower insulating layer 122 and the lower surfaces 112 of the conductors 110 at the terminal T, and a grounding member 170 bonded on a lower surface 162 of the reinforcing plate 160 and a lower surface 142a of the lower shield layer 142 to be electrically coupled to the lower shield layer 142 are provided, wherein the grounding member 170 extends to under the terminal T.

With respect to a connector for attachment to a shielded flat cable including a signal wire and a ground wire arranged in parallel, an insulating layer covering the signal wire and the ground wire; and a first shield layer and a second shield layer respectively covering both sides of the insulating layer, wherein a terminal in which the signal wire and the ground wire are exposed is formed on a first shield layer side at an end in a longitudinal direction, the connector includes a casing, wherein the casing includes a bottom to face the first shield layer or the second shield layer, a top to face the first shield layer or the second shield layer, a side wall connected to the bottom and the top, a signal wire contact member, a ground wire contact member, and the connector further includes a signal wire contact member configured to come in contact with the signal wire of the terminal upon the shielded flat cable being attached, a ground wire contact member configured to come in contact with the ground wire of the terminal upon the shielded flat cable being attached, a first shield layer contact member configured to come in contact with the first shield layer upon the shielded flat cable being attached, and a second shield layer contact member configured to be electrically coupled to the second shield layer upon the shielded flat cable being attached, wherein the ground wire contact member is electrically coupled to the first shield layer contact member.

A non-metallic cable includes at least two circuit conductors each disposed within a first insulator, a grounding conductor, and a first jacket in which the at least two circuit conductors and the grounding conductor extend. The non-metallic cable further includes two control conductors, each control conductor disposed within a second insulator, and a second jacket made from a thermoplastic material in which the two control conductors extend. The first jacket is connected to the second jacket.

An electrical cable including four copper layers, where at least two of the four copper layers are separated by a polymeric base layer, and where at least two of the four copper layers are separated by an adhesive. The electrical cable further includes a polymeric cover layer adhered to an outermost copper layer.

A cable includes a pair of core wires, a shielding layer covering the pair of core wires, and an outer insulating layer covering the shielding layer, wherein each of the pair of core wires includes an inner conductor and an insulating layer spirally wound around the inner conductor, the insulating layer includes at least two layers, and winding directions of adjacent insulating layers are different.

A non-halogen flame-retardant insulated electric wire includes a conductor and a crosslinked single-layer or a multilayer insulating layer on an outer periphery of the conductor. The insulating layer has a tensile elastic modulus of 500 MPa or more and an elongation at break of 120% or less in a tensile test performed at a displacement rate of 200 mm/min, and has a storage elastic modulus at 125° C. of 3×10.sup.6 Pa or more in a dynamic viscoelasticity test.