Cable Fault Pre Locator 12.1 Inch Touch Screen 400MHz Eight Pulse 68km Underground Cable Tester | XHGG502
The XHGG502 is a portable, industrial-grade cable fault pre locator that measures and analyzes power cable status and fault distance using the traveling wave (TDR) method. Built around a 12.1-inch industrial-grade touchscreen computer and a dedicated cable management software, it combines the low-voltage pulse method, the high-voltage flashover method and the advanced multiple pulse (eight-pulse) method in one instrument. It pre-locates low-resistance, short-circuit, open-circuit and disconnection faults, as well as high-resistance leakage and flashover faults, on XLPE, PVC, rubber-sheathed and oil-impregnated paper cables of 35kV and below, together with high-frequency coaxial cables, local telephone cables, street-light cables and buried wires.
| Parameter | Specification |
|---|---|
| Display | 12.1-inch industrial-grade touch all-in-one computer |
| Operating System | Embedded industrial computer with dedicated cable management software |
| Test Methods | Low-voltage pulse method, high-voltage flashover method, multiple pulse (eight-pulse) method |
| Sampling Frequency | 400MHz |
| Low Voltage Pulse Amplitude | 400V |
| Low Voltage Pulse Width | 0.25 µs / 2 µs / 4 µs |
| Minimum Resolution | 0.1m |
| Ranging Range | ≥68km |
| Test Blind Spot | ≤10m |
| Measurement Error | ≤±(0.5%×L+1m), L is the cable length |
| Test Cable Length Ranges | <1km (short distance) / <3km (medium distance) / >3km (long distance) |
| Pulse Coupler Withstand Voltage | DC 35kV |
| Power Supply | Charging AC 110–240V, 50/60Hz; built-in 10400mAh lithium battery |
| Working Conditions | -20°C to +65°C, relative humidity 90%, 750±30mmHg |
12.1-inch industrial-grade computer control with touch operation
Embedded operating system with a powerful cable management system and automatic report generation
Measures cable wave velocity and fault distance
Fully automatic continuous sampling that never misses a discharge waveform
Adopts the latest embedded industrial computer and the world’s most advanced eight-pulse (multiple pulse) test technology, together with the impulse high-voltage flashover method and the low-voltage pulse method
Any high-resistance fault presents the simplest waveform characteristics similar to a low-voltage pulse short-circuit fault, making it very easy to interpret
The reflected signal sent by the pulse coupler is automatically displayed, and the full-length waveform of the cable open circuit is shown at the same time
Mass waveform storage: field waveforms can be stored in a prescribed order and recalled at any time, with handwriting annotation of test personnel, locations and fault characteristics
Ultra-high brightness large LCD readable in direct sunlight, with powerful data processing and a friendly interface
Standard USB interface for data export, and supports waveform printing
Extremely safe high-voltage protection measures so the tester will not crash or be damaged in an impulse high-voltage environment
Built-in large-capacity lithium battery for open-circuit and low-resistance short-circuit testing in a power-free environment
Each XHGG502 ships as a complete pre-location kit, so a field team can switch between the low-voltage pulse, high-voltage flashover and multiple pulse methods without sourcing extra parts.
| Item | Qty | Function |
|---|---|---|
| Cable Fault Tester (Host) | 1 | Tests and analyzes cables using the low-voltage pulse, high-voltage flashover and multiple pulse methods |
| Coupler | 1 | Used in the multiple pulse (eight-pulse) method |
| Stylus | 1 | Touch operation on the integrated screen for precise selection |
| Single Q Line (Output Line, 1.5m) | 1 | Connects the host to the cable under test in the low-voltage pulse method |
| Double Q Line (Input Line, 2m) | 1 | Connects the host to the sampler in the high-voltage flashover method |
| Sampler | 1 | Receives the reflected high-voltage signal in the flashover method |
| Power Cord (1.8m) | 1 | Charging cable for the host |
| Coupler High-Voltage Line A (2m) | 1 | Connects the coupler and the cable under test in the multiple pulse method |
| Coupler High-Voltage Line B (2m) | 1 | Connects the coupler and the high-voltage pulse signal source |
| Ground Wire (2.5m) | 1 | Coupler grounding wire |
Note: It is strictly forbidden to connect AC 220V power when running high-voltage flashover or multiple pulse sampling tests. Coupler high-voltage lines can only be plugged and unplugged, and must never be rotated or twisted.
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