What equipment is actually required for a complete cable fault detection system?

It features a 10.1-inch full-color touchscreen, a maximum sampling frequency of 400 MHz, and a ranging capability exceeding 120 km; it automatically analyzes waveforms to display the fault distance. It should be noted that "coarse ranging" cannot be performed directly; a high-voltage pulse generator must be used to apply high voltage and break down the fault point so that the main unit can capture a valid reflected waveform and determine the distance. This process first establishes the approximate location of the fault, narrowing the range down to within a few tens of meters—or even just a few meters.

The first step of rough measurement tells you "roughly where it is."

Detects the alignment, path, and burial depth of underground cables. It utilizes the principle of electromagnetic induction and features high power output; it is not limited by cable length, can trace paths even in open-circuit conditions, and offers a detection depth exceeding 10 meters.

Can't find the blueprints? First locate the path, then determine the points.

It utilizes impulse discharge to break down the fault point. This process spans both the rough ranging and precise pinpointing stages: during rough ranging, it works with a cable fault tester to break down the fault and capture waveforms; during pinpointing, it works with a pinpointing device to induce repeated discharges at the fault, generating acoustic and magnetic signals. The unit integrates a DC high-voltage source, energy-storage capacitors, and a discharge spark gap into a single device weighing no more than 35 kg; it also supports DC withstand voltage testing, offering dual functionality.

Use it for rough fault location via breakdown, and for pinpointing via acoustic signals—a single device handles the entire process.

Utilizing the principle of acoustic-magnetic synchronization, the device simultaneously captures the acoustic and electromagnetic waves generated by the breakdown discharge at the fault site, calculating the precise location based on the time difference between the two signals. This process relies on a high-voltage pulse generator; since the pinpointing unit itself does not cause the fault to "emit sound," the generator must continuously apply high voltage to induce repeated discharges, allowing the unit to detect the acoustic and magnetic signals and achieve precise localization. With a positioning accuracy of ≤0.1 meters, the system employs a fully digital pinpointing probe combined with fifth-order superposition filtering technology to clearly capture discharge sounds, even in noisy environments.

Refining the measurement from a rough estimate of tens of meters to a precision of 0.1 meters.