Digital Cable Fault Pinpointer with Acoustic-Magnetic Synchronization for Precise Underground Fault Detection

The XHDD503B Cable Fault Pinpointer uses acoustic-magnetic synchronization to precisely determine the location of underground cable fault points. An electronic flashover is generated by an impact discharge generator, picked up and amplified by the corresponding probe, and the precise fault point is determined through auditory and visual judgment. This instrument completes precise cable fault location within the rough measurement range while collecting acoustic and magnetic time difference data. It integrates positioning technology and path-assisted testing, offering multiple test modes with rich diagnostic information for efficient and accurate cable fault location.

Suitable for low-resistance, short-circuit, open-circuit and disconnection faults of power cables, high-frequency coaxial cables, street light cables, and buried wires made of various materials with different cross-sections and media, as well as high-resistance leakage and high-resistance flashover faults. Complies with GB/T 18268.1 and DL/T 849.2-2019 standards.

This device uses the acoustic-magnetic synchronization method to accurately determine fault locations. Its principle is based on the traditional acoustic point determination method enhanced with electromagnetic signal detection and application.

When a high-voltage generator performs impact discharge on a faulty cable, the sound generated at the fault point is transmitted to the ground. The sound signal is picked up by a highly sensitive probe, and after amplification, a distinct "pop" sound can be heard through headphones.

The built-in probe simultaneously receives the magnetic field signal in real time. Using the principle that electromagnetic wave propagation speed far exceeds sound propagation speed, the distance to the fault point is determined by detecting the time difference between the electromagnetic and sound signals. By moving the sensor to find the point with the smallest acoustic-magnetic time difference, the exact fault location is identified directly below.

Traditional acoustic measurement instruments rely solely on headphone monitoring or meter pointer movement to distinguish fault discharge sounds. Since the discharge sound is instantaneous and often indistinguishable from ambient noise, inexperienced operators face significant challenges. The acoustic-magnetic synchronization method effectively overcomes these limitations, providing a reliable and accurate detection solution.

After-Sales Service: 12-month free warranty for product quality issues, lifetime maintenance and technical support.