Analysis of the main application features of the three major categories of wire and cable

1. The wire and cable products used in the power system of the power system mainly include overhead bare wires, bus bars (bus bars), power cables (plastic cables, oil-paper cables (replaced by plastic power cables), rubber sleeve cables, and overhead insulated cables. ), branch cables (replace some of the busbars), electromagnetic wires, and electrical equipment, such as electrical cables and wires.

2. Information Transmission System Wire and cable used for information transmission system mainly includes local telephone cable, television cable, electronic cable, radio frequency cable, optical fiber cable, data cable, electromagnetic wire, power communication or other composite cables.

3, machinery and equipment, instrumentation system This section except for overhead bare wires, there are applications for almost all other products, but mainly power cables, electromagnetic wires, data cables, instrumentation cables and so on. Wire and cable products are mainly divided into five categories: 1. Bare wires and bare conductor products The main features of this type of product are: pure conductive metal, non-insulated and sheathed layers, such as ACSR, copper and aluminum busbars, electric locomotives. Lines, etc.; processing technology is mainly pressure processing, such as smelting, rolling, drawing, stranding / compaction stranding; products are mainly used in suburbs, rural areas, user main line, switchgear and so on.

The main features of this type of power cable product are: Extruding (wrapping) the insulation layer on the conductor, such as overhead insulated cables, or several strands (corresponding to the phase, neutral and ground of the power system), such as over two cores. Insulate the cable, or add additional layers such as plastic/rubber cables. The main process technologies include drawing, stranding, insulation extrusion (wrapping), cabling, armoring, sheath extrusion, etc. There are certain differences in the different process combinations of various products. The products are mainly used in the transmission of electricity, electricity, electricity, electricity, electricity, and electricity in high-voltage transmission lines, with large currents (tens of amps to several thousand amps) and high voltages (220 V to 500 kV and above).

Electrical equipment wire and cable The main features of this type of product are: variety of specifications, a wide range of applications, the use of voltage in 1kV and below, in the face of special occasions continue to derive new products, such as fire-resistant cables, fire-retardant cables, low Smoke-free halogen/low-smoke and low-halogen cable, termite-proof, rat-proof cable, oil/cold resistance/temperature/wear resistant cable, medical/agricultural/mining cable, thin-walled wire, etc.

Communications Cables and Optical Fiber With the rapid development of the communications industry over the past two decades, the products have also been developing at an alarming rate. From the simple telephone telegraph cable in the past to the development of thousands of pairs of voice cables, coaxial cables, optical cables, data cables, and even composite communication cables. The size of such products is usually small and uniform, and the manufacturing precision is high.

Electromagnetic wire (winding wire) is mainly used for various motors, instruments and meters. Derivatives and new products of wire and cable New products derived from wire and cable are mainly due to the requirements of different applications, different application requirements, and the convenience of equipment and the reduction of equipment costs. New materials, special materials, or changes in product structure, or Improve process requirements, or combine different varieties of products to produce.