Wire electric energy, information, and wire products that realize the conversion of electromagnetic energy; in order to facilitate selection and improve applicability, my country’s wire and electricity can be divided into the following five categories according to their uses:
1) Bare wires: refer to products with only conductors and no insulation layer, including copper, aluminum and other metals and cable composite metal round single wires, stranded wires, flexible wiring, and type cables for overhead transmission lines of various structures. Wires and profiles;
2) Winding wire: In the form of a winding, the magnetic line of force is cut in a magnetic field to induce current, or the wire used to generate a magnetic field with current,so it is also called electromagnetic wire, including enameled wire, winding wire,and inorganic insulated wire with various characteristics Wait
3) 3) Power cables: Cable products used to transmit and distribute high-power electrical energy in the backbone of the power system, including power cables with various voltage levels and various insulations from 1 to 330kV and above;
4) Communication cables and communication optical cables: communication cables are cables that transmit telephone, telegraph, television, broadcasting, data and other electrical information; communication optical cables use optical fibers (optical fibers) as the light wave transmission medium for information transmission; radio frequency cables are suitable Cables used to transmit radio frequency signals in radio communications, radio and related electronic equipment;
5) Wires and cables for electrical equipment: Wires and cables for power connection lines that directly transmit electrical energy from the power distribution point of the power system to various electrical equipment and appliances; these products are the most widely used, with the most varieties, and most of them need to be combined The characteristics of the equipment used and the use environmental conditions determine the structure and performance of the product

Wire and cable: wire products used to transmit electric energy, information and realize electromagnetic energy conversion;
Insulated cable: a collection of the following parts: one or more insulated cores, their respective coating (if any), total protection (if any), outer protection (if any), Cables can also have additional conductors without insulation; flexible cables: cables that require flexibility in use and can meet this (flexibility) requirement in terms of structure and material;
Flexible cord: a flexible cable composed of multiple conductors with small cross-sections;
Single-core cable: a cable with only one insulated core;
Multi-core cables: cables with more than one insulated core;
Flat (multi-core) cable: a multi-core cable with multiple insulated core groups arranged in parallel into a flat shape;
Cable accessories: the general name of accessory devices used with cables in cable lines;
Bare wires: wires without insulation; single wires—single wires;
Twisted wire: a conductor made of multiple round wires or shaped wires twisted in a spiral shape;
Winding wire: also known as electromagnetic wire, a wire used for the winding of motors, electrical appliances and electrical instruments to achieve electromagnetic energy conversion;
Enameled wire: wire with varnish film insulation (layer), mainly used as winding wire;
Power cables: cables for power transmission and distribution;’
Non-drip cable: integrally impregnated paper-insulated cable in which the impregnant does not flow at the highest continuous working temperature;
Split-phase lead sheathed cable: a three-core cable with each insulated core covered with lead or lead alloy (sheath);
Oil-filled cable: a self-contained pressure type cable that uses insulating oil as a pressurized fluid and allows the oil to flow freely in the cable; Overhead insulated cable: an insulated cable used for overhead or outdoor suspension;
Communication cables: cables used to transmit electrical information, including urban communication cables, long-distance communication cables, office cables, and data communication cables;
Layered cable: a cable in which many wire groups are arranged in concentric layers to form a cable core
Unit type cable: a cable in which many wire groups are combined into a cable core with a bundle pattern or a concentric pattern.
Symmetrical cable: a cable composed of symmetrical pairs;
Coaxial cable: a communication cable composed of a coaxial pair;
Radio frequency cables-used as feeders for the transmitting and receiving antennas of radio stations or connecting cables for various radio frequency communication and testing equipment;
Telephone cord—a flexible cord used for connection of telephone equipment;
Conductor: a solid conductor in a cable with a specific function of conducting current
Solid conductor: a conductor made of a round wire or profiled wire
Single conductor: the conductor of a single wire or multiple metal wires without covering other metal layers
Metal-plated conductor: each single wire is plated with a thin layer of a different metal or alloy
Tinned conductors: conductors plated with tin
Metal-coated conductor: a conductor composed of a metal as an inner part and a wire covered with another metal as an outer layer by metallurgical processing (welding);

Concentric patterned round conductor: multiple single wires are twisted in a spiral shape to become a stranded conductor with one or more concentric layers, usually the adjacent layers are twisted in opposite directions;
Bundled conductor: a conductor formed by spirally bundled multiple single wires in the same direction and the same pitch;
Multi-stranded conductor: a one-layer or multi-layer conductor is formed by spiral patterns of several wire groups, each of which can be concentrically twisted or bundle
Sector conductor: a type conductor with a cross-sectional shape similar to sector
Flexible conductor: suitable for the corrugated conductor of flexible cable composed of round wire with small enough diameter;
Compressed conductor: a corrugated conductor that is compressed or stretched mechanically, or appropriately selected the shape and configuration of a single wire to reduce the twisting gap;
Concentric conductor: a conductor wrapped around one or several insulated cores
Insulation layer: insulating material with specific function of withstand voltage in the cable;
Conductor insulation: insulation on a conductor or conductor shield
Extrusion insulation: insulation usually extruded by a layer of thermoplastic or thermosetting material;
Wrapping insulation: spirally wrapped with insulating tape into a concentric layer of insulation
Impregnated paper insulation: wrapped insulation composed of impregnated insulating paper
Rubber insulation: a dense layer of rubber or rubber band insulation
Plastic insulation: dense layer made of plastic or insulated with a bag
Enameled insulation: a continuous dense insulating film formed by the enameled wire paint on the conductor
Shielding layer: the shielding layer that limits the electromagnetic field in the cable or cable components, and protects the cable rabbit from the external electric field and magnetic field; the shielding layer covering the cable is usually grounded
Conductor shielding: an electrical shielding layer of non-metallic or metallic materials covering the conductor;
Insulation shielding: an electrical shielding layer of metal or non-metallic materials covering the insulating layer;
Insulated core: a combination of conductor and its insulation layer and shielding layer (if available)
Main core: the insulated core of the wire and cable that undertakes the main function
Auxiliary core: the insulated core of the wire and cable that bears auxiliary functions
Symmetric wire pair: a wire group composed of insulated wire cores with the same structure and symmetrical to the longitudinal axis;
Coaxial pair: a wire pair composed of concentrically placed inner and outer conductors (all or part of the middle is supported by insulation);
Filler: the material used to fill the gap between the insulated cores in the multi-core cable;
Inner lining: a non-metallic layer wrapped around the core of a multi-core cable (including fillers) and placed under the protective layer
Isolation layer: used to prevent the different components of the cable (such as the conductor and the insulation or the insulation and the sheath) from adversely affecting each other. Sheath: a uniform and continuous tubular coating of metal or non-metallic material, usually extruded into a metal sheath -Sheath made of metal, corrugated metal sheath, a metal sheath with a certain corrugated shape;
Metal sheath: a sheath made of polymer materials;
Outer sheath: a non-metallic sheath that is wrapped around the metal sheath as the outermost sheath of the cable;
Armor layer: used to prevent external mechanical influence from the covering layer of the cable made of metal tape, wire and silk;
Outer layer: one or more covering layers on the outside of the cable;
Percent electrical conductivity: the percentage electrical conductivity of the covering layer woven by metallic or non-metallic materials is the ratio of the international standard soft standard electrical resistivity (IACS) to the electrical resistivity of the material at the same temperature at 20°C, expressed as a percentage and available by weight Or volume calculation;
Current carrying capacity: the long-term full load current conducted in the cable conductor under the allowable operating temperature;
Conductor cross-section: the sum of the cross-sections of the individual wires that make up the conductor perpendicular to the conductor axis;

Twisting pitch: the length along the axial direction when a certain component of the cable rotates in a spiral shape
Pitch diameter ratio: the ratio of the grain pitch of the pattern element to its spiral diameter;
Twisting direction: the direction of rotation of the twisted elements of the cable relative to the cable axis;
Stranding constant: the ratio of the length of the element before the comparison to the length of the article after the texture;
Filling factor: the ratio of the sum of the cross-sections of the single wires that make up the conductor to the cross-section of the conductor profile;
Weaving coverage (weaving density): the percentage of the surface area covered by the woven material to the total surface area of the woven layer;
Wire drawing: the process of drawing a metal rod or wire through a mold into a wire with a certain cross-section and shape;
Annealing: continuous or discontinuous thermal treatment of cold-worked metal wires to reduce the process of manufacturing stranded conductors;
Bundling: the process of making bundled conductors;
Enamel: the process of applying enameled wire paint on the surface of metal wire;
Winding: the process of winding a concentric layer with tape;
Overlapping wrapping: when the band-shaped material is wrapped, the band side and the adjacent band side overlap each other;
Gap wrapping: when the band-shaped material is wrapped, the band side and the adjacent band side do not overlap with each other;
Pair twisting: the process of forming a wire group with two insulated cores according to the pitch;
Cable formation: the process of stranding a number of insulated cores or ad cores with metal sheaths, unit cord sets and other components into cable cores;
Extrusion (rubber): a mixture of plastic or rubber, which is continuously and uniformly extruded on the conductor or cable core;
Cross-linking: the process of transforming a plastic from a linear structure to a spatial network structure by physical or chemical methods;
Vertical wrapping: the process of longitudinal wrapping of the strip;
Weaving: the process of weaving metal wires or non-metal fibers on conductors or insulating layers into a mesh pattern;
Lead pressing: the process of extruding and sealing, uniform and continuous lead sheathing on the cable by hot pressing;
Armoring: The process of covering a cable with an armor layer.

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