XHDD503E Cable Fault Pinpointer with Acoustic-Magnetic Sync for Underground Cables

The cable fault locator uses vibration pickup and electromagnetic induction principles to determine specific cable fault locations. A high-voltage pulse generator causes flashover discharge at the fault point, generating physical phenomena that are detected by the instrument's special probe, amplified, processed, and displayed to precisely locate faults through visual and auditory feedback.

This instrument is suitable for locating various cable faults including low-resistance, short-circuit, open-circuit, disconnection, high-resistance leakage, and high-resistance flashover faults in power cables, high-frequency coaxial cables, street light cables, and buried wires of different materials and cross-sections.

• 5-inch touch-high brightness LCD ensures visibility under sunlight
• 4 test modes: standard, enhanced, noise reduction, and customized
• 4 positioning functions: acoustic-magnetic synchronization, pure acoustic, pure magnetic, and step voltage
• Background noise reduction technology with multiple filtering options
• Equipped with BNR and mute functions
• Path deviation indication capability
• Multi-layer physical isolation signal sensors with IP65 waterproof rating
• Built-in large-capacity lithium battery with long standby time and fast charger
• Compact, lightweight design with simple user interface

This highly accurate method combines traditional acoustic measurement with electromagnetic signal detection. When high-voltage discharge occurs at the fault point, the instrument detects both sound and electromagnetic signals, using their time difference to pinpoint the fault location where the time difference is smallest.

Used primarily for high resistance and flashover faults, this method converts acoustic signals from the discharge point into electrical signals that are amplified, filtered, and displayed. The point of greatest sound intensity indicates the fault location.

This method determines cable path and fault locations by detecting pulse signal characteristics using an induction coil. Deviations in pulse signal characteristics indicate fault points.

For buried cable ground faults, this method uses potential difference measurements. By moving two test points (A and B) along the cable path, the fault point is identified where the potential difference becomes zero or reverses polarity.