摘要:
An insulated electric conductor includes a flat or round wire made of one or more electrically conductive materials, the flat or round wire having an exterior surface that is free of an oxide layer; and an insulating layer adhering directly to the oxide-layer-free exterior surface to form a coating around the oxide-layer-free exterior surface, the insulating layer being made of at least one thermoplastic material which provides electrical insulation. The flat or round wire is designed to conduct an electrical current.
摘要:
An electric wire protection member covering and protecting an outer periphery of an electric wire, the electric wire protection member includes an exterior member made of a flexible resin and having a tubular body in which peak portions and valley portions are alternately formed in an axial direction over a peripheral direction orthogonal to the axial direction, and a tubular bending restriction member accommodated in the exterior member and capable of bending in one direction with one side portion as an inner side. The bending restriction member includes a cut-out portion and a plurality of divided tubular portions connected by a connecting portion formed in the one side portion. The cut-out portion is inclined in the axial direction with respect to a radial direction of the bending restriction member.
摘要:
Disclosed are cable types, including a type THHN cable, the cable types having a reduced surface coefficient of friction, and the method of manufacture thereof, in which the central conductor core and insulating layer are surrounded by a material containing nylon or thermosetting resin. A silicone based pulling lubricant for said cable, or alternatively, erucamide or stearyl erucamide for small cable gauge wire, is incorporated, by alternate methods, with the resin material from which the outer sheath is extruded, and is effective to reduce the required pulling force between the formed cable and a conduit during installation.
摘要:
A system and method for degassing cables, such as e.g. High-Voltage Alternative Current (HVAC) or High-Voltage Direct Current (HVDC) cables, where the system has a reel having a perforated cylinder wall and sealing elements adapted to seal off the inner space of the reel, a gas duct in fluid connection with the inner space, and a source of pressurised and heated gas fluidly connected to the gas duct. The method incudes winding a cable onto the reel and blow heated and pressurised gas into the inner space of the reel/cylinder.
摘要:
A cable including a conductive composite core formed from braided carbonized fibers and fiberglass fibers. At least a portion of the fiberglass fibers are coated with magnetic material to suppress electromagnetic interference noise. Methods of forming such cables is also provided herein.
摘要:
High reliability power cables for subsea application are provided. Example power cables provide enhanced resistance to partial discharge dielectric breakdown as well as resistance to explosive gas decompression, by eliminating micro-defects and voids at the interface between the insulation layer and the barrier layer during the cable manufacturing process. Lead metal, which is conventionally extruded as a primary barrier layer, is replaced in the example power cables by a gas-and-fluid-resistant thermoplastic that is co-extruded or tandem extruded with surface-modified insulation to promote bonding between the two layers. Elimination of lead metal in the example power cables also significantly reduces their overall weight. The improved resistance to partial discharge and resistance to rapid gas decompression translates to lower workover and lower cost of ownership.
摘要:
Disclosed is type THHN cable having a reduced surface coefficient of friction, and the method of manufacture thereof, in which the central conductor core and insulating layer are surrounded by a nylon sheath. A high viscosity, high molecular weight silicone based pulling lubricant for THHN cable, or alternatively, erucamide or stearyl erucamide for small THHN gauge wire, is incorporated, by alternate methods, with the nylon material from which the outer sheath is extruded, and is effective to reduce the required pulling force on the cable during installation.
摘要:
A system and method for a down-hole cable is provided. The down-hole cable includes an insulated conductor portion. A filler layer abuts and encapsulates the insulated conductor portion, wherein the filler layer is substantially formed with a foamable fluoropolymer. At least one additive is mixed with the foamable fluoropolymer filler layer. An armor shell is applied to the exterior of the foamable fluoropolymer filler layer with the at least one additive. A bond is formed between the foamable fluoropolymer filler layer with the at least one additive and an internal surface of the armor shell.
摘要:
A silicone article, such as a cable with a silicone outer jacket. Solid mica particles are introduced into the surface of the cable or other article. An intermediate product which has a silicone-type base material on the exterior is initially provided in a state that is not, or no more than partially, cross-linked. The solid material particles are subsequently pressed in, before the complete cross-linking takes place. The solid material particles are present only in the surface region.
摘要:
A method of manufacturing a polymer-insulated conductor. The method includes the steps of a) providing a conductor having a first cross-sectional shape, b) passing the conductor through a conductor-shaping die to shape the conductor such that the conductor obtains a second cross-sectional shape, wherein frictional heat is developed in the conductor, thereby setting the conductor in a heated state, c) applying molten polymer to the conductor when the conductor is in the heated state to obtain a polymer-coated conductor, and d) shaping the polymer-coated conductor by means of a polymer-shaping die to thereby obtain the polymer-insulated conductor.