Abstract: In recent years, high-voltage cable fusion joint technology has gradually been applied in the field, but the key technology in the production process lacks effective management and control means. In order to solve these problems, the image depth intelligent processing digital ray (IDIP-DR) detection technology is used to detect the key fabrication process of high-voltage cable splice.After testing, it is found that there is a bubble construction technology problem in the main insulation.The causes of the defects are analyzed and the corresponding process control suggestions are put forward.

Key words: cable fusion joint, IDIP-DR test, main insulation defect, process control