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 insufficient 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, including soil filling and cover issues. Operational defects may include termite damage, water ingress in grounding boxes, moisture penetration at bifurcation points, or insulation resistance reduction. These defects can be challenging to locate, especially with deep burial or complex surroundings, often leaving operational hazards unresolved for years.
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 handover tests, preventive maintenance, and fault location in cross-interconnect systems, quickly identifying 10kV-500kV cable sheath faults and leakage currents. The device also performs 5kV-10kV DC withstand voltage tests (1 minute) on HDPE and PVC cable sheaths, making it essential for high-voltage cable maintenance.
Main Features
Over-current, overvoltage, and overheating automatic protection
Zero start protection for enhanced safety
Self-discharge design - high-voltage output automatically zeros when cut off
Dual-pointer meter display for current and voltage
One-key switching between location and withstand voltage modes
No blind spots in test range
Adjustable receiver sensitivity for precise location
Over-current protection switch for both operation modes