Talking about the Development of High Temperature Resistant Power Cables

In recent years, through the introduction of foreign complete sets of technology, equipment and raw materials, China's power cable manufacturing industry has the ability to continuously produce high-volume industrialized continuous production voltage grades ranging from 1kV to 220kV XLPE power cables. 

Meet Domestic Demand and Partially Export Overseas. 

The quality and implementation standards of domestic cable products have been in line with the world's advanced level. 

Most enterprises have passed ISO9000 quality assurance system certification, providing a large number of high-quality products for the transformation of urban and rural power grids in China. 

Among them, the development prospects of this branch industry of high temperature resistant power cables are consistently optimistic.

Some cable companies in the domestic cable industry are vying for the tower production line. 

Their respective purposes are different. 

Some of them really want to win orders for 500kV cables for large hydroelectric power stations and pumped storage power stations, and they are glory for the country; some are just for decoration. 

Show yourself "powerful", just to be a signboard and promote the role of corporate visibility.

others have a comparison mentality, want to compare competitors in this respect. 

It is understood that there are very few companies that are capable of manufacturing 500kV cross-linked cables, and most of them are "fashionable".

Domestic dry-type plastic insulated power cables are mainly insulated with XLPE instead of low-density polyethylene, and it is not currently possible to manufacture 500kV-class power cables. 

In the future, if you need to import 500kV dry cable, which kind of insulation should be used? 

The United States, Japan, Italy and other countries produce XLPE cable. 

After cross-linking, the maximum operating temperature of the cable can reach 90 °C, transmission capacity. 

Add a lot. 

However, in a highly purified polyethylene material, a crosslinking agent or the like must be added to affect the insulation performance. 

France exclusively advocates the use of low-density polyethylene insulated cables with a voltage rating of up to 400kV. 

In order to meet the ordering requirements of China, 500kV cables have been produced. 

The cable is not cross-linked, although the maximum operating temperature is only 70 ° C, but the insulation is guaranteed to be highly pure, electrical performance is excellent, both have their own strengths, and complement each other.