国产18禁无遮挡免费看,8x8国产精品视频影库,国产情侣自拍片在线视频,日本人成网站在线播放,亚洲无砖砖区一二区免费,2021国产91在线,国产精品一级三级在线,国产v在线观看视频天堂,国产精品熟女一区二区,国产好吊妞无缓冲视频久

How much do you know about power cables?

2020-12-07 16:18:40 浙江立洲線纜股份有限公司 Viewd 3521

A cable is a wire product used to transmit electrical and magnetic energy. I believe my friends are familiar with it. But did you know? There are also many categories of wires. Today, the cable manufacturer will introduce you to power cables.


Power cable is one of many types of cables. It is a wire product made by extruding or wrapping an insulating layer on the outside of the conductor, or adding a sheath layer. Cable manufacturers can use overhead insulated cables when squeezing or wrapping the insulation layer, or they can use several-core stranded (this kind of mostly corresponds to the phase, neutral and ground wires of the power system), for example, overhead insulation with more than two cores cable.


When manufacturers produce power cables, the main process technologies used include drawing, stranding, insulation extrusion (wrapping), cabling, armoring and sheath extrusion. These processes are not all used in cable production. Cable manufacturers will combine different processes according to the type of cable produced. The power cables produced through the above process are mainly used in the transmission of strong electric energy in power generation, distribution, transmission, substation and power supply lines. The current through the power cable is relatively large, ranging from tens of amperes to several thousand amperes, and the voltage is also relatively high. High, 220V to 350KV or more.