What should be noted during the production of power cables, and in which fields are they widely used?

2025-08-21

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In the production process of power cables, several critical steps must be carefully monitored to ensure both product quality and safety. First, the selection of raw materials is paramount: copper or aluminum, used as conductor materials, must exhibit excellent conductivity and corrosion resistance. Meanwhile, insulation materials—such as cross-linked polyethylene, which is widely preferred for its outstanding electrical insulation properties and exceptional aging resistance—must also meet rigorous standards. Second, the manufacturing process requires meticulous control, encompassing steps like extrusion, stranding, shielding, and armor plating. Each stage demands precision to prevent failures during cable operation. Finally, quality testing is an essential环节, involving tests such as conductor resistance measurement, insulation resistance testing, and high-voltage withstand tests, all designed to confirm that the cable complies with national standards and industry regulations. As for their applications, power cables are extensively utilized in urban and rural grid construction, internal power supply systems within industrial and mining enterprises, transportation rail networks, large-scale buildings and public infrastructure distribution systems, as well as in renewable energy projects like wind farms and photovoltaic power plants—making them an indispensable medium for modern society's electricity transmission needs.

How to check the quality of cables

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