There are many types of wires and cables, which can be classified according to their different characteristics. If the function, structure and similarity of the manufacturing process of the product are considered, combined with the application characteristics, it can be classified according to the application and category.
According to the cable application division
1. Power system
Overhead bare conductor, bus bars (busbars), power cables (plastic cables, oil-paper cables (basically replaced by plastic power cables), rubber sheathed cables, overhead insulated cables), branch cables (replacing some busbars), electromagnetic wires and electrical Equipment cables, etc.
2. Information transmission system
Local telephone cables, TV cables, electronic cables, radio frequency cables, optical fiber cables, data cables, magnet wires, power communication or other composite cables, etc.
3. Mechanical equipment
Instrumentation system: almost all products except overhead bare wires, mainly power cables, magnet wires, data cables, instrumentation cables, etc.
According to the type of cable
1. Bare wires and bare conductor products
The main features of this type of product are: pure conductor metal, no insulation and sheath layer, such as steel cored aluminum stranded wire, copper-aluminum busbar, electric locomotive wire, etc. The processing technology is mainly pressure processing, such as smelting, calendering, drawing, stranding/compression stranding, etc. The products are mainly used in the suburbs, rural areas, user main lines, switch cabinets, etc.
2. Aerial insulated cables
Insulated overhead conductors are erected on poles, and the insulation design margin can be smaller than that of power cables. Insulation is polyvinyl chloride or cross-linked polyethylene. It is generally made into a single core, but it can also twist 3 to 4 phase insulated cores into a bundle without a sheath, which is called a cluster type overhead cable.
3. Power cable
The main features of this type of product are: extruding (winding) the insulating layer outside the conductor, such as overhead insulated cables, or twisting several cores (corresponding to the phase wire, neutral wire and ground wire of the power system), such as overhead insulated cables with more than two cores , or add a sheath layer, such as plastic/rubber sheathed wires and cables. Main technology has drawing, stranded, insulation extruded (wrapped), stranding, armouring, sheath to extrude etc., and the different process combination of various products has certain difference.
The products are mainly used in the transmission of strong electric energy in the transmission, distribution, transformation, and power supply lines, and the passing current is large (tens of amps to thousands of amps), and the voltage is high (220V to 500kV and above).
4. Wire and cable for electrical equipment
The main features of this kind of products are: various varieties and specifications, wide range of applications, and the use voltage is more than 1kV and below. For special occasions, new products are constantly derived, such as fire-resistant cables, flame-retardant cables, low-smoke and halogen-free/low-smoke 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.
5. Communication cables and optical fibers
With the rapid development of the communication industry in the past two decades, the products have also developed at an astonishing speed. From the 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.