How to classy of cables and wires,and applications of cable and wires
- What are the types of commonly used wires and cables according to their uses? Answer: According to the use, it can be divided into bare wires, insulated wires, heat-resistant wires, shielded wires, power cables, control cables, communication cables, radio frequency cables, etc.
- What kinds of insulated wires are there? Answer: There are the following types of insulated wires: PVC insulated wire, PVC insulated flexible wire, nitrile-polyvinyl chloride mixture insulated flexible wire, rubber insulated wire, agricultural underground buried aluminum core plastic insulated wire, rubber insulated cotton yarn Textile cords, PVC insulated nylon sheathed wires, PVC insulated cords for electricity and lighting, etc.
- What occasions is the cable tray suitable for? Answer: The cable tray is suitable for indoor and outdoor overhead laying of power cables and control cables in general industrial and mining enterprises, and can also be used for indoor and outdoor erection in telecommunications, radio and television and other departments.
- What are the cable accessories? Answer: Commonly used electrical accessories include cable terminal junction boxes, cable intermediate junction boxes, connecting pipes and terminals, steel wiring troughs, cable trays, etc.
- What is the cable intermediate joint? Answer: The device that connects the cable with the conductor, insulating shielding layer and protective layer of the cable to connect the cable line is called the cable intermediate joint.
Wire and cable applications
- Power system
The wire and cable products used in the power system mainly include overhead bare wires, bus bars (bus bars), power cables (plastic cables, oil-paper power cables (basically replaced by plastic power cables), rubber sheathed cables, overhead insulated cables), branch cables (replacing part of the busbar), magnet wire and electrical equipment wire and cable for power equipment, etc.
- Information transmission system
The wires and cables used in the information transmission system mainly include local telephone cables, TV cables, electronic cables, radio frequency cables, optical fiber cables, data cables, electromagnetic wires, power communication or other composite cables.
- Mechanical equipment, instrumentation system
Except for overhead bare wires, almost all other products are used in this part, but mainly power cables, magnet wires, data cables, instrumentation cables, etc.
Wire and cable products are mainly divided into five categories
- Bare wires and bare conductor products
The main features of this type of products are: pure conductor metal, without insulation and sheath layers, such as steel-cored aluminum stranded wires, copper-aluminum busbars, electric locomotive wires, etc.; the processing technology is mainly pressure processing, such as smelting, calendering, drawing The products are mainly used in suburban, rural areas, user main lines, switch cabinets, etc.
- Power cable
The main features of this type of product are: extruding (winding) an insulating layer on the outside of 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 jacket layer, such as plastic/rubber sheathed wire and cable. The main process technologies are drawing, stranding, insulation extrusion (wrapping), cabling, armoring, sheath extrusion, etc. There are certain differences in the combination of different processes of various products.
The products are mainly used in the transmission of strong electric energy in the power generation, distribution, transmission, transformation and power supply lines, with large current (tens of amps to several thousand amps) and high voltages (220V to 500kV and above).
- Wire and cable for electrical equipment
The main features of this type of products are: a wide range of varieties and specifications, a wide range of applications, the use of voltages of 1kV and below, and new products are constantly derived in the face of special occasions, such as fire-resistant cables, flame-retardant cables, low-smoke halogen-free / low Smoke and 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.
- Communication cables and optical fibers (brief introduction)
With the rapid development of the communication industry in the past two decades, products have also developed at an astonishing speed. From the simple telephone and telegraph cables in the past to thousands of pairs of voice 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.
- Magnet wire (winding wire
Mainly used for various motors, instruments and meters
Derivatives/New Products of Wire and Cable
Derivatives/new products of wires and cables are mainly due to the requirements of different application occasions, application requirements, convenience of equipment and reduction of equipment costs, etc., and adopt new materials, special materials, or change product structure, or improve process requirements, or different. A variety of products are combined.
Use different materials such as flame retardant cables, low smoke zero halogen/low smoke low halogen cables, termite-proof, mouse-proof cables, oil-resistant/cold-resistant/temperature-resistant cables, etc.
Change the product structure such as: fire-resistant cable, etc.;
Improve process requirements such as: medical cables, etc.;
Combination products such as: OPGW, etc.;
Easy to install and reduce equipment costs such as: prefabricated branch cables, etc.