Product Description
The XHHV535-4Z high voltage pulse generator is a system used to generate DC high-voltage pulse signals and generate electrical test signals with required parameters. It is often used as an impulse high-voltage power supply for fault detection of power cables with voltage levels of 35kV and below. Its impact high voltage is 0-35kV, built-in 4μF capacitor, and the discharge energy is up to 2450J.
The XHHV535-4Z HV surge generator consists of a charging circuit and a discharging circuit. It samples the voltage of the high-voltage cable and sends it to the voltage regulator control circuit. It is usually used in high-voltage flashover fault testing and acoustic-magnetic synchronization fault point determination. This device integrates a DC high-voltage source, an energy storage capacitor, and a discharge ball gap into a single portable unit weighing no more than 40kg. It completely replaces traditional test transformers, operation boxes, and pulse energy storage capacitors weighing over 100 kilograms, making it the lightest portable DC impulse high-voltage equipment currently available.
Product Features
- Equipped with automatic protection functions for overcurrent, overvoltage and overheating
- Features DC withstand voltage and impulse discharge dual-mode operation
- High-voltage pulse output is uniform and controllable
- Super short-circuit protection function allows high-voltage output to directly short-circuit to ground while operating normally
- Dual 1.5-level pointer meter display of current and voltage for intuitive real-time monitoring of the discharge process
- High-voltage side voltage measurement for real-time accuracy
- Zero-start protection with potentiometer return-to-zero function for safe and reliable operation
- Unique high-voltage measurement design: voltmeter indicates capacitor voltage in real time even in stop state
- Adjustable discharge interval for flexible testing requirements
- Compliant with DL/T846-2016 and DL/T474-2017
Technical Parameters
| Impact High Voltage |
0~35kV (adjustable) |
| Built-in Capacitor |
4μF |
| Discharge Energy |
Up to 2450J |
| Output Voltage Polarity |
Negative polarity |
| Impact Power |
400W |
| Short Circuit Current |
0~320mA |
| High Voltage Accuracy |
1.5 level |
| Over-Temperature Protection |
65°C |
| Overcurrent Protection |
12A (more than 8S) low voltage side |
| Weight |
No more than 40kg |
| Dimensions |
430L × 345W × 550H mm |
| Power Supply |
AC220V±15%, 50Hz±2Hz (60Hz customizable) |
| Ambient Temperature |
-25 ~ +65°C |
▎Frequently Asked Questions
Q: How does a high voltage surge generator work in cable fault detection?
The surge generator discharges a high-energy pulse into the faulty cable, creating a controlled high-voltage arc at the fault point. This arc produces both an acoustic signal (loud thumping sound detectable by ground microphones) and an electromagnetic pulse (detectable by an inductive receiver). By combining acoustic and electromagnetic signal arrival times, operators can pinpoint the exact fault location with precision—a technique known as acoustic-magnetic synchronization.
Q: Which voltage range should I select for different cable types?
Voltage selection follows the cable's rated operating voltage as a general guideline. For low-voltage cables (up to 1kV), use the 8kV or 12kV range. For medium-voltage distribution cables (6-15kV), the 16kV range is appropriate. For high-voltage transmission cables (35kV and above), use the 32kV range. Always consult the cable manufacturer's maximum test voltage specifications and ensure all safety clearances are maintained during high-voltage operation.
Q: What safety precautions must be observed during surge generator operation?
High voltage surge generator testing requires strict safety protocols. Always verify the cable is fully de-energized and isolated from all power sources before connection. Establish a minimum 5-meter safety perimeter around the test zone with warning signs. All personnel must wear appropriate PPE including arc-rated clothing, HV insulating gloves, and dielectric overshoes. The integrated safety features—automatic discharge upon power-off, emergency stop, and zero-voltage interlock—provide additional layers of protection but should never replace proper safety procedures.
Q: What is the advantage of multiple energy levels (Joules) on this unit?
Different energy levels serve different diagnostic purposes. Low energy settings (e.g., 864J–1024J) are ideal for initial fault confirmation and locating high-resistance faults where excessive energy could worsen cable damage. Medium energy (1225J–2048J) provides optimal acoustic signal strength for most routine fault pinpointing. High energy (2450J+) is reserved for very long cables, deep burial scenarios, or high-impedance faults that require stronger arc generation to produce a detectable acoustic signature. The three-level selection allows operators to match energy output to field conditions.
Q: What warranty and support is included with this surge generator?
12-month standard warranty against manufacturing defects with lifetime technical support. CE and ISO 9001:2015 certified. Each unit includes the surge generator, HV output cable, ground cable, discharge rod, user manual, and a rugged transport case. On-site installation, commissioning, and operator safety training are available upon request. Spare parts including discharge gaps, capacitors, and HV diodes are stocked for rapid replacement.
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