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Wire and cable classification and application

2014-11-18 09:00:13 Tips:

1. The commonly used what types of wire and cable according to utility cent? Answer: according to the application can be divided into bare wire, insulated wire, heat-resistant wires, shielded wires, power cables, control cables, communication cables, rf cables and so on. 

2, what kind of insulated wire are there? Answer: often the insulated wire has the following kinds: PVC insulated wire, PVC insulated flexible wire, nitrile soft PVC compounds insulation wire, rubber insulated wire, agricultural underground buried plastic insulation aluminum core wire, rubber insulation cotton textile soft wire, PVC insulated nylon sheathed wire, electric power and lighting soft PVC insulated wire and so on. 

3, cable tray is suitable for the occasion? Answer: cable bridge is applicable to general industrial and mining enterprises inside and outside aerial power cable, control cable laying, can also be used in telecommunications, broadcasting and television and other departments in the indoor and outdoor set up. 

4, cable accessories have? Answer: the commonly used electrical accessories have cable terminal connector, cable junction box, connecting the middle tube and terminal blocks, wiring trough, cable tray of the steel plate, etc. 

5, what is joint between the cable? Answer: the connecting cable and the cable conductor, insulation shielding layer and protective layer, so that the cable line connection device, called a cable joint in the middle. 

 

Wire and cable applications 

1, the power system 

Power system used in wire and cable products mainly include overhead bare wires, bus (bus), power cable, power cable (plastic cable, the paper (basic) they were replaced by plastic power cables, rubber sets of cables, overhead insulated cables), branch cable to partly replace bus (), electromagnetic wire, and power equipment with electrical wire and cable equipment, etc. 

2, information transmission system 

The main wire and cable used in information transmission system are local cable, TV cable, electronic cable, rf cable, fiber optic cable, data cable, electromagnetic wire, electric power communication or other composite cables, etc. 

3, mechanical equipment, instrumentation system 

This section in addition to the overhead bare wires almost all the other products are used, but mainly power cable, electromagnetic wire, data cable, instrumentation cables, etc. 

Wire and cable products are mainly divided into five categories 

1, the bare wires and bare conductor products 

The main characteristic of this kind of product is: pure metal conductor, insulation and sheath layer, such as steel core aluminum stranded wire, copper bus-bar, line of electric locomotive, etc; Processing technology mainly is the pressure processing, such as melting, rolling, drawing, twisted/compressed tightly twisted, etc.; Products are mainly used in suburban, rural, user, the main line, switch cabinets, etc. 

2, power cable, 

This kind of product main features are: the crowded outside the conductor insulation (around) package, such as overhead insulated cable, or a few core stranded (corresponding to the power system of phase line and zero line and ground), such as more than two core overhead insulated cable, or add sheath layer, such as plastic/rubber wire and cable. Main technology has drawn, twisted, insulation extrusion (around), cabling, armored, sheath extrusion, such as combination of different processes of various products have a certain distinction. 

Products are mainly used in hair, with, lose, and high voltage power transmission of the power supply circuit, through the current big (dozens of Ann to thousands of Ann), high voltage (220 v and 500 kv and above). 

3, electrical equipment with wire and cable 

Such products, the main characteristics are: various specifications, application range, use voltage in 1 kv and below is more, to derive new products constantly, in the face of special occasions, such as fireproof cables, flame retardant cable, low smoke zero halogen/against termites, low smoke low halogen cable, mouse cable, oil/cold/heat resistance, abrasion resistance cable, medical/farm/mining cable, thin wire, etc. 

4, communication cable and optical fiber (briefly) 

With nearly 20 years, the rapid development of communication industry, the product also has a remarkable development. From the past simple development to thousands of telephones and telegraph cable to cable, coaxial cable, optical cable, data cable, even combined communication cables, etc. 

The product structure size is usually small and uniform, manufacturing high accuracy requirement. 

5, the electromagnetic wire (winding wire 

Mainly used for all kinds of motors, instruments and meters, etc. 

Wire and cable derivatives/new product 

Wire and cable derivative/new products is mainly due to the application of different requirements and equipment applications, convenience and reduce the equipment cost and other requirements, and use new materials, special materials, or change the product structure, improve the technological requirements, or will produce different varieties of products are combined. 

With different materials such as flame retardant cables, low smoke zero halogen/low smoke low halogen cables, termite resistance, prevent the mouse cable, resistant to oil/cold/heat resistance wire, etc.; 

Change the products structure, such as: fireproof cables, etc.; 

Improve the technical requirements such as: medical cable, etc.; 

Composite products such as: OPGW, etc.; 

Convenient installation and decrease the cost of equipment such as: prefabricated branch cable, etc.