There are many types of power cables , which can be divided into three categories: paper-insulated power cables, rubber-insulated power cables and self-capacity oil-filled cables. Paper-insulated power cables can be divided into nine-oil-oil insulated power cables and non-drip. Oil-paper insulated power cable. Rubber-insulated power cables are a general term for plastic insulated cables and rubber insulated cables. Plastic insulated cables include PVC insulated, polyethylene insulated and XLPE insulated power cables; rubber insulated cables include ethylene propylene rubber insulated power cables. The self-capacity oil-filled cable is a cable structure that eliminates the air gap formed in the insulating layer by the principle of supplementary immersion to improve the working field strength of the cable. It is supplied with a supplementary impregnation device (such as a pressure tank), which is usually compensated by a low viscosity mineral oil or synthetic oil through a cable oil passage. Can be divided into low, medium and high oil pressure three. Figure 1-43 ~ Figure 1-47 are the structure of various types of insulated power cables. As can be seen from the above figures, the basic structure of the power cable can be divided into the following parts: (1) Wire: It may consist of copper or aluminum wire; it consists of a circular or sectoral conductor; it consists of a single core and a triple core. (2) Insulation layer: It can be composed of insulating materials such as oil-impregnated paper, polyvinyl chloride, cross-linked polyethylene and rubber. (3) Protective layer: It consists of sheath (lead or aluminum), gasket, packing, armor layer (such as steel armor), outer layer (such as hemp). (4) Shield: consists of a semiconductor strip, a thin copper strip, and the like. Its role is: 1 to prevent damage caused by corona; 2 to limit the medium into the cable or conductor insulation inside, 3 to give a symmetrical field strength, smooth voltage gradient; 4 to reduce the induced voltage; 5 to increase safety. The content of the entry is for reference only. If you need to solve a specific problem (especially in the fields of law, medicine, etc.), it is recommended that you consult a professional in the relevant field.
Armored tape is generally a metal band or metal shell wrapped around the surface of the device to protect the power cable from wear or corrosion.
For example, armored cables are wrapped with a layer of copper tape outside the cable to prevent being pierced or worn by sharp objects,it can provide flexible Cord Covers.
Armoured thermocouple is the thermocouple jacket with stainless steel jacket to prevent internal corrosion of the thermocouple.
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1. Provided products for the State Grid in 2008 to ensure the smooth progress
of the Beijing Olympic Games.
2. Provided products and services to China Southern Power Grid in 2010 to
ensure the smooth progress of the Guangzhou Asian Games.
3. Occupied more than 50% of insulation protection field of overhead contact
line for China High Speed Rail Market.
4. has been Excellent supplier and long-term partner of Aviation Industry
Corporation of China.
5. Provided core technology and products for power cable accessories
(electrical stress control).