XHGG501E Cable Fault Pre Locator
The XHGG501E is a portable, industrial-grade cable fault pre locator that measures the distance to faults in underground power cables using the traveling wave (TDR) method. Built around a 10.1-inch touch all-in-one computer and an embedded operating system, it integrates the low-voltage pulse method, the high-voltage flashover method and the multiple pulse (8-times) method in one instrument, so field crews can pre-locate low-resistance, short-circuit, open-circuit, disconnection, high-resistance leakage and flashing faults on power cables, high-frequency coaxial cables, street-light cables and buried wires of various materials and sections.
Applications & Target Audience
Built for cable fault location and emergency repair service teams, third-party cable fault detection providers, and municipal underground power grid and street-lighting maintenance units, as well as railway, metro and industrial plants that must locate buried cable faults quickly on site.
Key Specifications
| Parameter |
Specification |
| Display |
10.1-inch full-color TFT touch screen, 1024 × 600, 280 nit |
| Test Methods |
Low-voltage pulse, high-voltage flashover, multiple pulse (8 times) |
| Sampling Frequency |
80MHz |
| Low Voltage Pulse Amplitude |
100V ±15% |
| Distance Measurement Range |
≥65km |
| Test Range |
300m / 1km / 5km / 25km / 65km |
| Pulse Width |
0.125 / 0.50 / 2.50 / 7.25 / 10.0 µs |
| Test Frequency |
80MHz / 40MHz / 10MHz / 2MHz / 1MHz |
| Minimum Resolution |
0.10m |
| Test Blind Area |
≤20m |
| Measurement Error |
≤±(0.5%×L+1m), L is the cable length |
| Waveform Storage |
More than 8,000 records |
| Power Supply |
AC 110–240V, built-in 5200mAh lithium battery |
| Charging / Working Time |
About 2 hours charge, more than 5 hours working |
| Pulse Coupler Withstand Voltage |
DC 35kV |
| Protection Rating |
IP54 |
| Working Conditions |
-20°C to +65°C, relative humidity 90% |
Advanced Features
- 10.1-inch full-color TFT touch screen with a clear, easy-to-read menu
- Embedded system with a stable and simple display and operation mode
- Measures cable wave velocity, cable length and fault distance
- Fully automatic continuous sampling with real-time waveform capture
- Automatic test range setting with automatic waveform analysis and distance display
- Low-voltage pulse, high-voltage flashover and multiple pulse (8 times) test technology
- Stores more than 8,000 low-voltage pulse and high-voltage flashover waveform records
- USB communication for importing waveform files into computer software for management and analysis
- Ultra-high brightness LED backlight (280 nit) for operation in direct sunlight
- Built-in large-capacity lithium battery supporting fast charging and power-free field testing
- Rugged protective chassis rated not less than IP54
Three Test Methods, One Instrument
Different cable faults call for different test signals. The XHGG501E combines three proven methods in a single unit, so one instrument covers almost every on-site pre-location scenario without extra equipment.
| Method |
How It Works & When to Use It |
| Low-Voltage Pulse Method |
Applies a low-voltage pulse and analyzes the reflected waveform to pre-locate low-resistance and open-circuit faults quickly and safely. |
| High-Voltage Flashover Method |
Uses a high-voltage pulse or DC source to make the fault point flash over and discharge, generating a reflected signal for high-resistance leakage and flashing faults. |
| Multiple Pulse Method (8 Times) |
Works with a pulse coupler to display 8 groups of high- and low-voltage waveform comparisons for automatic distance measurement and manual analysis of complex faults. |
With an optional pulse coupler, the multiple pulse method helps separate the true fault echo from interfering reflections on long or heavily branched cables.
FAQ
Q1: What types of cables and faults can the XHGG501E locate?
It pre-locates low-resistance, short-circuit, open-circuit, disconnection, high-resistance leakage and flashing faults on power cables, high-frequency coaxial cables, street-light cables and buried wires of various materials and sections.
Q2: How far and how accurately can it measure?
The distance measurement range is (up to) 65km with a minimum resolution of 0.10m, a test blind area of 20m or less, and a measurement error of no more than (0.5% x L + 1m), where L is the cable length.
Q3: Which test methods does it support?
It supports the low-voltage pulse method, the high-voltage flashover method and the multiple pulse (8-times) method, all selectable from the touch-screen interface.
Q4: Can it work without mains power on site?
Yes. A built-in 5200mAh lithium battery charges in about 2 hours and supports more than 5 hours of working time, so testing can be carried out in a power-free environment.
Q5: How are test results stored and exported?
The instrument stores more than 8,000 low-voltage pulse and high-voltage flashover waveform records and exports waveform files to computer software for management and analysis over USB.
Note: It is strictly forbidden to connect AC 220V power when running high-voltage flashover or multiple pulse sampling tests.
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