With the full deployment of urban network transformation, many power supply bureaus, construction teams, and design units are encountering 110kV XLPE cables for the first time. Due to time constraints and limited experience, many cables fail the withstand voltage test (10kV/1min). Most outer sheaths use HDPE material, which passes factory DC 25kV/5min withstand voltage tests with leakage currents as low as tens of μA. Post-installation defects typically result from external damage during laying, while operational defects may include termite damage, grounding box moisture, insulation deterioration, or moisture penetration at grounding wire junctions.
Our high-voltage cable outer sheath fault detector (output voltage ≤10kV) complies with Chinese national standard GB50150-2006 for cable sheath testing. It's ideal for:
Cable sheath handover and preventive testing
Fault location in cross-interconnect systems
Identifying grounding faults and leakage currents in 10kV-500kV cables
Performing 5kV-10kV DC withstand voltage tests (1 minute) on HDPE and PVC sheaths
Key Features
Over-current, overvoltage, and overheating automatic protection
Zero-start protection for enhanced safety
Automatic self-discharge when high-voltage output is cut
Dual-pointer display for current and voltage monitoring
One-touch switching between location and withstand voltage modes
Full-range testing with no blind spots
Adjustable receiver sensitivity for precise location
Over-current protection switch for both testing modes