What are the causes of high voltage cable failure?

This is the most common combination of high voltage cables.

High-voltage cables usually refer to transmission lines that carry voltages above 10kV. According to GB/T 2900.50-2008, definition 2.1, high voltage usually does not include 1000V. Overhead Line Method High-voltage transmission cables are usually transmitted underground by cables with insulation in cities, and often transmitted in the field using overhead lines carried by pylons.   Wire … Read more

Why can’t High Voltage Cables be Buried Underground?

hv cable

The current underground cables are generally of lower voltage level, and the line transmission with high voltage level is often overhead, which is mainly due to cost and technical factors.​​ Ultra-high voltage power transmission refers to the use of 500kV-1000kV voltage level to transmit electric energy. If the 220 kV transmission index is 100%, the … Read more