Pro Underground Cable Fault Pinpointer XHGX507
The XHGX507 Pro Underground Cable Fault Pinpointer is a professional-grade electromagnetic induction detection system engineered for precise underground cable fault location. It excels at pinpointing cable-to-ground insulation faults up to 2MΩ using advanced step voltage detection technology, eliminating the need for high-voltage flashover equipment. Designed for street lighting cables, buried power distribution cables, and communication cable networks.
Key Features
Step Voltage A-Frame Fault Detection: Proprietary step voltage detection method pinpoints cable-to-ground insulation faults up to 2MΩ without high-voltage equipment. The A-frame accessory measures potential differences along the cable path to locate the exact fault point with zero potential crossing detection
2MΩ High-Resistance Fault Capability: Uniquely designed to locate high-resistance cable insulation failures that traditional time-domain reflectometry (TDR) and high-voltage surge methods struggle with. Ideal for single-phase metallic ground faults where discharge energy is insufficient for acoustic pinpointing
All-Digital LCD Display System: Large backlit LCD screen displays real-time signal strength ladder diagram (0-999), numeric value, gain level (0-100dB), frequency mode, battery status, and depth/current measurements. Voice FM tone prompt reduces operator eye fatigue during extended field work
Dual-Frequency Transmitter: Low Frequency (LF) for long-distance tracking up to 15km with minimal adjacent line interference, and Radio Frequency (RF) for high-resistance pipelines and poor grounding conditions with automatic impedance matching (5Ω-3000Ω)
Three Signal Application Methods: Direct connection for strongest signal and optimal accuracy; Coupling clamp for live (charged) cable detection without service interruption; Built-in induction antenna for areas where cable access is physically limited
Three Receiver Working Modes: Peak method for fast cable tracking, Trough method for precision positioning in low-interference environments, and Step Voltage method with A-frame for fault pinpointing
50Hz Passive Detection: Locate energized power cables by detecting their natural 50Hz frequency emission — no transmitter connection required, ideal for pre-excavation utility surveys
Depth and Current Measurement: Direct-reading digital depth display (up to 10m), plus 45-degree and 80% verification methods. Real-time current measurement distinguishes target cable from parallel adjacent pipelines even at different burial depths
Built-in Ohmmeter: Automatic loop resistance measurement and continuous auto-output impedance matching ensures optimal signal transmission regardless of soil conditions or cable type
Portable Field-Ready Design: Receiver 70cm × 20cm × 11cm (3kg), Transmitter 16cm × 16cm × 39cm (4kg). Both powered by rechargeable 7.4V lithium batteries. LCD backlight for night operation. Operating temperature range -10°C to +55°C
Technical Specifications
| Receiver Unit |
| Operating Frequency |
Low Frequency (LF), Radio Frequency (RF), 50Hz Passive |
| Antenna Modes |
Peak Method (Horizontal Coil), Trough Method (Vertical Coil), A-Frame Step Voltage |
| Signal Strength Display |
Ladder Diagram + Numeric (0-999) with FM Tone Audio |
| Gain Control |
Manual Adjustable, 0-100dB Dynamic Range |
| Maximum Detection Depth |
≥10m |
| Maximum Detection Range |
15km (Direct Connection, Insulated Cable) |
| Depth Accuracy |
LF: ±(1-5)%, RF: ±(5-12)% |
| Battery |
7.4V Rechargeable Lithium Battery |
| Battery Life |
Continuous >8 Hours, Standby >16 Hours |
| Dimensions |
70cm × 20cm × 11cm |
| Weight |
3 kg (with Battery) |
| Transmitter Unit |
| Operating Frequency |
Low Frequency (LF), Radio Frequency (RF) |
| Output Modes |
Direct Connection, Coupling Clamp, Induction (Built-in Antenna) |
| Matched Load Range |
5Ω - 3000Ω (Automatic Impedance Matching) |
| Impedance Display |
5-Digit LCD |
| Output Power |
Low / Medium / High (Selectable) |
| Battery |
7.4V Rechargeable Lithium Battery |
| Battery Life |
4-8 Hours (Frequency & Power Dependent) |
| Dimensions |
16cm × 16cm × 39cm |
| Weight |
4 kg (with Battery) |
| Fault Location Performance |
| Maximum Fault Resistance |
2MΩ (Cable-to-Ground Insulation Fault) |
| Fault Detection Method |
Step Voltage with A-Frame / Electromagnetic Signal Drop Analysis |
| Fault Types |
Open Circuit, Short Circuit, Insulation Breakdown, Sheath Damage |
| General |
| Operating Temperature |
-10°C to +55°C |
| Thermal Protection |
Automatic Over-Current Protection |
| Display Backlight |
Yes (Night Operation Supported) |
| Audio Indication |
FM Tone Proportional to Signal Strength |
Applications
Street lighting cable fault pinpointing (single-phase ground faults)
Buried LV/MV power distribution cable insulation fault location
Communication cable sheath damage and breakage detection
Cable-to-ground fault location for high-resistance faults where traditional methods fail
Pre-excavation underground utility mapping and cable route surveying
Live cable path finding via 50Hz passive mode or coupling clamp
Pipeline route tracing and depth measurement for water, gas, and metal pipe networks
T-junction and branch cable identification using current measurement comparison
Package Includes
1 x XHGX507 Pro Receiver Unit
1 x XHGX507 Pro Transmitter Unit
1 x A-Frame Step Voltage Fault Detection Accessory
1 x Coupling Clamp
1 x Direct Connection Cable Set (Red/Black)
1 x Ground Rod with Cable
2 x 7.4V Rechargeable Lithium Batteries
2 x Battery Chargers
1 x Rugged Transport Carrying Case
1 x User Manual