How much do you know about power cables?

2020-12-07 16:18:40 浙江立洲线缆股份有限公司 Viewd 206

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.