Wire and cable application classification

- Jun 05, 2020-

(A) Classification according to insulation materials, such as oil-impregnated paper insulated cables, PVC cables, XLPE cables, etc.


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(B) Classified according to usage, divided into power cables, communication cables and control cables. They are used in power systems, information transmission systems, mechanical equipment, and instrumentation systems, respectively.


1. Power system


The wire and cable products used in the power system mainly include overhead bare wires, bus bars (busbars), power cables (plastic cables, oil-paper power cables (basically replaced by plastic power cables), rubber sheathed cables, overhead insulated cables), branch cables (Replaces some busbars), electromagnetic wires, wires and cables of electrical equipment for electrical equipment, etc.


2. Information transmission system


The wire and cable used in the information transmission system mainly includes local telephone cable, TV cable, electronic cable, radio frequency cable, optical fiber cable, data cable, electromagnetic wire, power communication or other composite cables.


3. Mechanical equipment, instrumentation system


In this part, almost all products except overhead bare wires have applications, but mainly power cables, electromagnetic wires, data cables, instrumentation cables, etc.

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(C) According to product classification, it is divided into five categories


1. Bare wire and bare conductor products


The main characteristics of this type of product are: pure conductor metal, no insulation and sheath layer, such as steel core aluminum stranded wire, copper-aluminum bus bar, electric locomotive wire, etc.; the processing technology is mainly pressure processing, such as melting, rolling, drawing System, stranding/compacting stranding, etc.; the products are mainly used in suburbs, rural areas, user main lines, switch cabinets, etc.


2. Power cable


The main features of this type of product are: squeezing (winding) an insulation layer outside the conductor, such as an overhead insulated cable, or a few-core stranded (corresponding to the phase line, neutral line and ground wire of the power system), such as a two-core or more overhead insulated cable , Or increase the jacket layer, such as plastic/rubber sleeve wire and cable. The main process technologies are drawing, stranding, insulation extrusion (wrapping), cable formation, armoring, sheath extrusion, etc. The different process combinations of various products are somewhat different.

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The products are mainly used in the transmission of strong electric energy in the generation, distribution, transmission, transformation and power supply lines. The passing current is large (tens of amperes to thousands of amperes), and the voltage is high (220V to 500kV and above).


3. Wire and cable for electrical equipment


The main characteristics of this type of product are: a wide variety of specifications, a wide range of applications, and a large operating voltage of 1kV and below. In the face of special occasions, new products are continuously derived, such as fire-resistant cables, flame-retardant cables, low smoke, halogen-free/low Smoke-low halogen cables, termite-proof, mouse-proof cables, oil-resistant/cold-resistant/temperature-resistant/wear-resistant cables, medical/agricultural/mining cables, thin-walled wires, etc.


4. Communication cable and optical fiber


From simple telephone and telegraph cables in the past to thousands of pairs of telephone cables, coaxial cables, optical cables, data cables, and even combined communication cables. The structure size of such products is usually small and uniform, and the manufacturing precision is high.


5. Electromagnetic wire (winding wire)


Mainly used for various motors, instruments and meters.

electric cable (8)