Cable Fault Pre-Locator | XHGG501A2
The XHGG501A2 cable fault pre-locator is an industrial-grade TDR instrument built around a 12.1-inch touchscreen all-in-one computer. It combines the low-voltage pulse method and the high-voltage flashover method to quickly locate low-resistance, short-circuit, open-circuit, disconnection, high-resistance leakage and high-resistance flashover faults in power cables, high-frequency coaxial cables, street light cables and buried wires of various cross-sections and media. Technical parameters comply with GB/T 18268.1, DL/T 849.1-2019 and JJF1042-2020, ensuring reliable performance for field fault pre-location.
Applications & Target Audience: Engineered for railway and rail transit traction power maintenance departments, new energy solar and wind farm O&M teams, mining and oilfield facility electrical maintenance units, municipal street lighting management departments and industrial plant distribution room maintenance teams that pre-locate low-resistance, open-circuit, disconnection, high-resistance leakage and flashover faults in underground power cables up to 68km.
Key Specifications
| Parameter |
Specification |
| Sampling Frequency |
400MHz |
| Low-Voltage Pulse Amplitude |
400V |
| Pulse Width |
0.25μs / 2μs / 4μs |
| Minimum Resolution |
0.1m |
| Test Blind Zone |
≤10m |
| Distance Measurement Range |
≥68km |
| Measurement Error |
≤±(0.5%×L+1m) |
| Test Cable Length Options |
<1km (short) / <3km (medium) / >3km (long) |
| Power Supply |
AC 110V-240V, 50Hz/60Hz; built-in 11.1V lithium battery pack |
| Operating Temperature |
-20°C to +65°C |
| Relative Humidity |
90% |
| Dimensions & Weight |
430×380×220mm, 10kg |
Advanced Features
12.1-inch industrial-grade touchscreen all-in-one computer with user-friendly software interface
Dual testing methods: low-voltage pulse method and high-voltage flashover method (direct and impulse)
Wave velocity measurement and cable length testing functions for accurate fault distance analysis
Fully automatic continuous sampling ensures timely and accurate waveform capture
Ultra-high brightness large LCD display, clearly visible even in direct sunlight
Massive test waveform storage for convenient on-site review and historical comparison
Standard printer USB interface for test report printing
Built-in polymer lithium battery enables on-site testing in environments without external power
Preset cable types: XLPE, PVC, rubber-sheathed and oil-impregnated paper cables, with customizable propagation speed
Compliant with GB/T 18268.1, DL/T 849.1-2019 and JJF1042-2020
How It Works: Complete Fault Location Workflow
Step 1 - Coarse Testing: Use the low-voltage pulse method or high-voltage flashover method to determine the approximate fault distance, with a maximum range of 68km and a reading resolution of 0.1m.
Step 2 - Pinpointing: Cooperate with a cable fault locator to pinpoint the exact fault point of the main insulation failure.
Step 3 - Route and Depth: Use a cable path analyzer to identify the laying trend and burial depth of underground cables before excavation.
System Components: The XHGG series flash cable fault tester performs coarse testing of insulation faults; the XHDD series cable fault locator pinpoints main insulation failures; the XHLJ series cable path analyzer finds the direction and depth of buried cables. A complete system delivers fast, accurate and safe underground cable fault solutions.
FAQ
Q1: What types of cable faults can the XHGG501A2 detect?
It detects low-resistance, short-circuit, open-circuit, disconnection, high-resistance leakage and high-resistance flashover faults in power cables, high-frequency coaxial cables, street light cables and buried wires of various cross-sections and media.
Q2: What is the maximum measuring range and accuracy?
It provides a distance measurement range of up to 68km with a minimum reading resolution of 0.1m, a test blind zone of no more than 10m and a measurement error within ±(0.5%×L+1m).
Q3: Can it work outdoors without a power source?
Yes, it is powered by a built-in 11.1V lithium battery pack and operates from -20°C to +65°C, allowing on-site testing in environments without external power. The battery is rechargeable via AC 110V-240V.
Q4: What testing methods does it support?
It supports the low-voltage pulse method for low-resistance and open-circuit faults, and the high-voltage flashover method (direct flashover and impulse flashover) for high-resistance leakage and flashover faults, based on the traveling wave testing principle.
Q5: Which standards and certifications does it comply with?
It complies with GB/T 18268.1, DL/T 849.1-2019 and JJF1042-2020, and the instrument is CE and ISO certified, ensuring reliable and standardized field performance.
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