Below is a brief analysis of the causes of common problems in high-voltage cables, which can be roughly divided into the following categories according to the causes of faults: manufacturing reasons, construction quality reasons, and design unit design reasons. The report classified the failures into four different types. 1, high voltage usually does not include 1000V. Understanding the types of cable faults and their causes is of great significance for improving the service life and safety of cables. This article will explore several.