Stock Code:300252.SZ
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The characteristics of power cable

author:kingsignal time:2017/08/02

Power cable is a conductor that has high quality insulation and has a variety of protective layers. Its main function, like overhead wires, is used to transmit and distribute large amounts of electrical energy in power systems. The difference with the overhead line is that power cable can be laid in a variety of environments, safe and covert, free from external climate change interference; and can be less maintenance, durable. But the structure of the power cable is more complex, more manufacturing processes, product prices than the overhead wire several times higher; so generally used in applications that do not adapt to the use of overhead lines, such as urban transmission and distribution lines and industrial and mining enterprises to introduce Plant trunk power lines; and across the river railway station, through the underground tunnel. In fact the power line is composed of overhead wires and power cable, overhead wires focus on generating power transmission, change, power distribution part, and power cable focus on the use of power distribution, power terminal, therefore, the production of low voltage power cable The amount of more than 98%.

 

Power cable should have the following technical characteristics

 

1.Can withstand long and even high working voltage, should have a very good electrical insulation properties, so the use of power cable voltage can be divided into: low pressure , the pressure , high pressure , ultra high pressure .

 

2.Can transfer a lot of current, so the cross-sectional area will be used for hundreds or even thousands of square meters of conductive wire core. At the same time require the use of insulation and other materials with excellent heat aging resistance, while the overall structure to maintain heat balance.

 

3.In order to adapt the cable to various laying methods and the use of the environment , must use a variety of combinations of protective layer structure.

 

In fact, power cable relies on high-voltage insulation technology, high-current transmission technology and structural balance, sheath structure, etc. represent the electrical industry in these aspects of the academic level.

 

Manufacturing power cable of the main equipment are stranding machine, insulation coating equipment, into the cable machine, the outer jacket squeeze crusher and armored equipment. Among them, different insulation structure using different equipment, and process technology requirements are extremely high.

 

The above is a brief introduction to the power cable feature, learn more about the power cable content, please pay attention to kingsignal official website.

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