8μF 900J Portable High Voltage Surge Generator 15kV Impulse Power Supply for Underground Cable Fault Detection

1. High-energy 900J impulse discharge for effective cable fault point breakdown and location.
2. Super short-circuit protection — sustains direct high-voltage output to ground without damage.
3. Adjustable discharge time interval for optimal fault point energy delivery and acoustic signal clarity.
4. Dual 1.5-class pointer meters enable real-time discharge process monitoring in the field.
5. Negative polarity output optimized for cable fault impulse discharge applications.
6. Over-current protection at 8mA with 4-second delay prevents sustained overload conditions.
7. Automatic over-temperature cutoff at 65°C protects internal components during extended operation.
8. Zero-start safety interlock ensures high voltage is always initiated from zero output.
9. Compact 25kg design with integrated capacitor, power supply, and discharge control in one enclosure.
10. Operates reliably from -25°C to +65°C for year-round field deployment.

Connect the XHHV515-8L high voltage output to the cable under test. Set the desired discharge time interval using the front panel control. With reliable grounding established (ground resistance <5Ω), press the high-voltage start button to begin the impulse discharge sequence. The 8μF capacitor charges and discharges through the precision ball gap, delivering 900J pulses to the fault point.

When paired with a cable fault pinpointer, the impulse signals from the XHHV515-8L create acoustic and electromagnetic signatures at the fault point. The pinpointer detects the time difference between the electromagnetic wave and acoustic signal propagation, enabling precise fault location with sub-0.1m accuracy. The adjustable discharge interval ensures optimal signal clarity for acoustic-magnetic synchronization.

• Impulse high-voltage power supply for underground power cable fault detection (≤10kV class).
• Acoustic-magnetic synchronization fault point determination in buried cable networks.
• Mobile field diagnostics for utility maintenance and repair teams.
• DC withstand voltage testing of electrical equipment when configured for DC output mode.

Standards Compliance: Conforms to DL/T846-2016 "General Technical Conditions for High-Voltage Test Equipment" and DL/T474-2017 "Implementation Guidelines for Field Insulation Tests".

Composition of the instrument

Instrument composition list and diagram
Name	Qty.	Photo	Name	Qty.	Photo
Host	1		Power cord	1
HV output line	1		Ground wire	1
8A Fuse	5		Discharge rod	1