15kV 900J Portable Tie-Rod Low Voltage Surge Generator 8uF for Cable Fault Detection|XHHV515-8L

The XHHV515-8L is a tie-rod portable integrated high-voltage pulse generator designed specifically for low-voltage cable fault testing and DC withstand analysis at voltages up to 15kV. Delivering 900J discharge energy through an 8μF energy storage capacitor, it is optimized for the low-voltage distribution cable segment where 35kV-rated generators are oversized and impractical.

Integrating an energy storage capacitor, DC high-voltage source, and discharge ball gap into a single tie-rod form factor, the XHHV515-8L features a built-in 0–100 second adjustable time relay for precisely controlled impulse discharge intervals. Separate EMP (impulse) and DC (withstand) output terminals eliminate the need to reconfigure connections when switching between fault location and withstand voltage testing modes. A manual ball-gap discharge button allows operator-triggered impulses. Comprehensive automatic protection covers over-current (8mA/3s), over-voltage, and over-temperature (65°C).

• Tie-rod portable integrated design—compact, lightweight, easy to carry between field sites
• Built-in 0–100s adjustable time relay for precisely controlled automatic impulse discharge intervals
• Separate EMP and DC output terminals—no cable reconfiguration when switching between fault location and withstand testing
• Manual ball-gap discharge button for operator-triggered single impulses
• High-voltage pulse output is uniform and controllable across full voltage range
• High-voltage side metering for real-time, accurate voltage and current indication
• Zero-start protection: start button only effective when voltage knob is at zero position
• Over-current protection: 8mA threshold with 3-second delay, auto-pop switch
• Over-temperature protection: automatic cutoff at 65°C
• Auto-discharge: internal capacitor and cable residual voltage safely discharged on stop

The XHHV515-8L is purpose-built for low-voltage distribution network maintenance crews, street lighting and municipal cable service providers, building electrical contractors, and LV cable commissioning engineers—professionals whose daily work centers on cables rated below 15kV. In these applications, 35kV-rated generators introduce unnecessary bulk, weight, and cost. The XHHV515-8L fills this gap with a right-sized alternative: 900J is sufficient for LV fault flashover location, and the 8μF capacitor provides ample energy density for the lower voltage range. The tie-rod design enables easy transport in service vehicles, and the 0–100s timer allows hands-free cyclic discharge during extended fault search operations. For medium-voltage applications (35kV), see the XHHV535 series.