• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

For instance, an armoring process or armoring can embody wrapping galvanized armor or stainless steel about a number of assemblies, which could be or embody phase assemblies. Armor will be supplied as a strip that is wrapped about a number of insulated conductors that can every include a person lead (Pb) layer. In some spherical cable embodiments, two or more individual coated conductors will be twisted collectively earlier than armor is utilized. As an example, a method can include making an XLPE material with an inexpensive amount of crosslink density and/or adding a number of materials that can favorably interact with XLPE and type a appropriate thermally stable composite with excessive chemical resistance. For instance, a number of polymeric supplies could also be provided in a pelletized type that may be held in a bin of an extruder, which may be, for example, a single or multiple screw extruder. The extruded cushion layer 760 can be fabricated from a number of materials that may include a number of supplies resembling chemically resistant polymers as well as crosslinked buildings. As to materials for an extruded cushion layer (e.g., a stable extruded cushion layer), as an example, a polyethylene based compound could also be utilized.

A pelletized material or pelletized materials can be heated and deformed via extrusion (e.g., upon exposure to extrusion heat and stress). Where a cable is to be a kilometer in length, a limiting price of 6 meters per minute interprets to approximately 167 minutes; whereas, a limiting charge of sixty one meters per minute translates to approximately 16.Three minutes; noting that extrusion may be in excess of approximately sixty one meters per minute. If you have any concerns pertaining to exactly where and how to use low voltage armored power cable, you can make contact with us at our webpage. Such a layer may also help protect a copper conductor (e.g., and/or insulation) from substances corresponding to hydrogen sulfide gasoline and should improve the maximum operation temperature of a cable. As an example, the material of the formulation block 812 can embrace polyethylene in a form that's not crosslinked and/or partially crosslinked. For instance, in the tactic 810 of FIG. 8, crosslinking of polyethylene can occur to some quantity (e.g., a desired amount) submit extrusion per the extrusion block 816. For example, throughout the formation of the cable per the formation block 820 and/or in the course of the utilization of the cable per the utilization block 824, some amount of crosslinking may occur.

For example, the cushion layer 760 could be formed by extrusion of fabric concerning the exterior surface of the metallic shield 750, which is usually a lead (Pb) layer. As an example, an meeting or assemblies could be encased in a metallic tube (e.g., swaged metallic tube, metallic conduit, etc.). For example, consider a 3 phase cable that features section assemblies the place each cushion layer of a respective section assembly is colored differently to determine the corresponding section (e.g., crimson, white, black, inexperienced, and so forth.). As mentioned, a woven polyester braid layer (e.g., a PET fiber braided layer) may be applied on a lead (Pb) barrier as a protective warning towards damage or deformation throughout an armoring course of. As talked about, ESP cables will be utilized in extreme excessive temperature, pressure, and harsh chemical environments (e.g., together with corrosive liquids and gases). Where a cable contains polypropylene insulation adjoining to a copper conductor, a lead (Pb) layer may be positioned over the polypropylene insulation, which might increase its temperature rating (e.g., from about 96 degrees C. to about 125 degrees C.). In general, as polypropylene insulation is stiffer than EPDM insulation, a fabric tape or braid could also be foregone when the insulation is polypropylene insulation.

As taped or braided designs have a tendency to offer considerably lesser radial energy, when tape or braid is used, protective lead (Pb) layers, each about a respective conductor, get pressed collectively through the armoring course of. Such a cable can include a conductor, an insulation layer over the conductor, a barrier layer atop the insulation layer, and a protecting layer together with XLPE over the barrier layer. For instance, in a power cable, a conductor, a lead (Pb) barrier layer and a cushion layer can form an meeting the place power cable is a multiple part energy cable that features a plurality of the assemblies wrapped by metallic armor. As an example, a method can embrace extruding polyethylene a few lead (Pb) barrier layer disposed about a conductor to form an meeting; and armoring at least one of the assemblies with metallic armor to form a cable. For instance, a die may present for extruding materials in a considerably tubular shape a couple of lead (Pb) barrier layer. An extruder can power materials through a die or dies. As proven in FIG. 10, the cable one thousand features a conductor 1010, insulation 1030, a lead (Pb) barrier layer 1050 and armor 1080. Arrows in FIG. 10 characterize power as could also be applied throughout an armoring course of.