Digital Acoustic-Magnetic Cable Fault Pinpointer 0.1m Precision 100dB Gain Portable Field Unit | XHDD503B

1. Acoustic-magnetic synchronization with 100dB maximum signal gain for deep fault detection.
2. 0.1m fixed-point accuracy with automatic and manual acoustic-magnetic time difference analysis (max 80ms).
3. BNR background noise reduction mode enhances signal clarity in noisy field environments.
4. 5-inch color LCD touch screen with 854×480 resolution for clear waveform visualization.
5. Dual bar graph indicators for real-time sound and electromagnetic signal strength monitoring.
6. Adjustable sound and magnetic field trigger thresholds with trigger prompt functionality.
7. Multiple filter modes: All-pass, Low-pass, High-pass, and Band-pass for adaptable signal processing.
8. Built-in 8.4V 2.4Ah lithium-ion battery pack delivers over 8 hours of continuous field operation.
9. Records the last acoustic-magnetic time difference measurement for subsequent analysis and documentation.
10. Compact 7kg design with intuitive touch interface for single-operator field deployment.

When the high-voltage signal generator applies impulse voltage to the fault cable, discharge at the fault point generates both acoustic and electromagnetic signals. The electromagnetic signal propagates at near light speed, while the acoustic signal travels at approximately 340m/s through soil. The XHDD503B measures the time difference between these two signal arrivals. As the operator moves the sensor along the cable path, the point with the minimum acoustic-magnetic time difference indicates the exact fault location directly below. The system supports both automatic calculation and manual waveform analysis, with a maximum measurable time difference of 80ms.

Field environments often present high levels of ambient noise from traffic, machinery, and weather conditions. The XHDD503B's BNR (Background Noise Reduction) mode employs advanced digital filtering to isolate the characteristic discharge sound from background noise, significantly improving the signal-to-noise ratio. Combined with the adjustable sound trigger threshold, operators can precisely tune the detection sensitivity to match field conditions.

• Precision fault location for low-resistance, short-circuit, open-circuit, and disconnection faults in power cables.
• High-resistance leakage and flashover fault pinpointing in underground distribution networks.
• Emergency repair operations for urban power cable faults with minimal excavation requirements.
• Routine maintenance inspection of cable routes in utility substations and industrial facilities.