High Voltage Surge Generator | Cable Fault Locator| XHHV535-4Z
Its main application lies in conducting impulse discharge and withstand voltage tests when performing fault testing on low and high voltage cables.
As a high-end mobile (trolley-type) experimental instrument, it combines a DC high-voltage power supply, energy storage capacitor, discharge ball device, automatic discharge device, and voltage grade switching device into a single integrated system. This equipment comprehensively resolves the limitations of conventional experimental devices regarding ease of use, portability, safety, and reliability.
Applications & Target Audience: Engineered for underground power cable maintenance contractors, mining and industrial plant electrical maintenance teams, railway traction power supply departments, and wind and solar farm O&M crews that perform impulse discharge fault testing and DC withstand voltage testing on 35kV and below power cables.
Technical Parameters
| Parameter |
Specification |
| Ambient Temperature |
-25～+65℃ |
| Operating Power Supply |
AC 220V±10%/50Hz±1Hz |
Over-temperature Protection
|
65℃ |
| Over-current Protection |
12A (greater than 8S) on the low voltage side |
Impulse Power
|
400W |
Product Features
Equipped with automatic overcurrent, overvoltage, and overheat protection functions;
Features DC withstand voltage and impulse discharge functions;
High-voltage pulse output is uniform and controllable;
Superb short-circuit protection function allows the high-voltage output to work even when directly short-circuited to ground;
High-voltage side voltage measurement is real-time and accurate;
Zero-start protection ensures greater safety and reliability;
Discharge time can be arbitrarily set within a suitable interval.
This high-voltage surge generator provides field engineers with a dependable, ultra-light solution for power cable fault detection, helping to locate and clear faults quickly before outages spread.
Instrument Usage Precautions and Common Faults
1. When setting the instrument's timing parameters: It is strictly prohibited to set the closing time to greater than 0.2S, and strictly prohibited to set the capacitor energy storage time (opening time) to less than 3S. Otherwise, there is a risk of burning out the boost power supply or discharge device.
2. When using this device, carefully read the instrument's instruction manual and understand the operating procedures, wiring methods, and precautions.
3. The instrument is a highly precise electronic device; non-professionals are prohibited from disassembling it. Handle with care during transportation and movement; rough handling or impact is strictly prohibited.
4. The instrument must be reliably grounded before boosting the voltage.
5. Ensure that the instrument is switched off and discharged before switching between DC withstand voltage and impulse discharge functions.
6. At any time during the test, if an abnormality occurs, press the "Stop" button or turn off the power switch to ensure safety.
FAQ
Q1: Who is this high voltage surge generator designed for?
It is designed for underground power cable maintenance contractors, mining and industrial plant electrical maintenance teams, railway traction power supply departments, and wind and solar farm O&M crews that test and locate faults on 35kV and below power cables.
Q2: What impulse voltage, energy and capacitance does the XHHV535-4Z provide?
It provides an impact voltage of 0-32kV (default 0-28kV), a burn-through voltage of 0-28kV, a short circuit current of 0-320mA, a built-in 4μF capacitor, discharge energy of 0-2048J (default 0-1568J), and 400W impulse power with 1.5-level high voltage accuracy.
Q3: What standards and test applications does it comply with?
It fully meets the requirements of DL/T846-2016 (General-purpose Technical Conditions for High Voltage Test Equipment) and DL/T474-2017 (Implementation Guidelines for Field Insulation Test). It is mainly used for impulse discharge fault testing of cables rated 35kV and below, and for DC withstand voltage testing of other electrical equipment.
Q4: What safety protection functions are built in?
It is equipped with automatic overcurrent, overvoltage and over-temperature protection, zero-start protection, and superb short-circuit protection that allows the high-voltage output to work even when directly short-circuited to ground. High-voltage side measurement is real-time and accurate, and the Voltmeter indicates the capacitor voltage even in the stop state.
Q5: Why choose the XHHV535-4Z over a traditional test transformer set?
It integrates the DC high-voltage source, energy storage capacitor and discharge ball gap into one unit, completely replacing traditional sets that weigh over 100 kilograms (5kVA transformer, operation box and pulse capacitor). Weighing no more than 35kg, it is the lightest portable DC impulse high-voltage equipment, backed by a one-year free warranty and lifelong maintenance service.
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