Underground Cable Fault Locator with 0–32 kV Impulse Voltage for High Voltage Testing and Fault Detection

XHHV535-4Z

Specifically utilized for impulse discharge and withstand voltage tests during low and high voltage cable fault testing, this device is a premium trolley-mounted experimental instrument. It integrates multiple key components—DC high-voltage source, energy storage capacitor, discharge sphere device, automatic discharge device, and voltage level switching device—into one. It effectively overcomes the challenges of traditional experimental devices in terms of convenience, portability, safety, and reliability.

Product Features:
Features automatic overcurrent, overvoltage, and overheat protection;
Features DC withstand voltage and impulse discharge functions;
High-voltage pulse output is uniform and controllable;
High-voltage side voltage measurement is real-time and accurate;
Zero-start protection ensures greater safety and reliability;

Technical Parameters
Impulse Voltage: 0-32kV (default 0-28kV)
Breakdown Voltage: 0-28kV
Short-circuit Current: 0-320mA
High Voltage Accuracy: Class 1.5
Built-in Capacitor: 4μF
Discharge Energy: 0-2048 J (default 0-1568J)
Output Voltage Polarity: Negative Polarity
Impulse Power: 400W
Over-temperature Protection: 65℃
Over-current Protection: 12A (greater than 8S) on the low voltage side

Impulse Discharge Function
This system is used to generate DC high-voltage pulse signals, producing electrical test signals with the required parameters. It is commonly used as a high-voltage impulse power source for fault detection in power cables of 35kV voltage level and below.
It consists of a charging circuit and a discharge circuit.  It samples the voltage of the high-voltage cable and sends it to the voltage stabilization control circuit. The impulse magnet organically combines the DC high-voltage power supply, energy storage capacitor, and high-voltage discharge gap into one unit. It is typically used in high-voltage flashover fault testing and acoustic-magnetic synchronous fault location.