An insulated high-voltage power cable
By setting a photoluminescent powder layer and a gallium nitride shielding layer on the outer sheath of high-voltage cables, the problems of easy sheath damage and low detection efficiency are solved, and convenient wear detection and safety protection are realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENGHUA CABLE (BEIJING) CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-26
AI Technical Summary
Existing high-voltage cable sheaths are prone to damage, leading to discharge and grounding faults. Furthermore, the detection efficiency is low, resulting in a poor user experience.
A photoluminescent powder layer is installed on the outer sheath of the cable to store light energy during the day and emit light at night to facilitate the detection of wear. Combined with inner and outer shielding layers made of gallium nitride to prevent partial discharge, and a metal shielding layer to shield electromagnetic fields and provide grounding protection.
It improves the convenience and safety of sheath wear detection, extends cable service life, and reduces detection difficulty and discharge risk.
Smart Images

Figure CN224417537U_ABST