Innovative Cable Fault Detection with Acoustic and Magnetic Synchronous Positioning Instrument
The acoustic-magnetic synchronized locator is a major innovation in the field of cable fault detection. This device incorporates acoustic and magnetic synchronization technologies for reliable and effective fault location in underground power cables. By combining these two detection methods, the instrument significantly improves the accuracy of cable fault location, effectively reducing the time and manpower required for maintenance and repair work.
This technology has proven particularly valuable for public utility companies and maintenance crews working on underground cable networks. The synchronous positioning feature enables operators to detect faults with greater accuracy, even in complex urban environments where access to cable routes is difficult. The device's design prioritizes ease of use, enabling technicians to complete fault detection tasks with minimal training.
As urban power grids expand and underground cable networks grow increasingly dense, locating faults such as insulation breakdowns and water ingress in underground cables remains a persistent challenge for operations and maintenance teams. Traditional acoustic detection is prone to interference from environmental noise, while single magnetic signal detection often fails to pinpoint fault locations accurately in pipelines or complex terrain. Goldhome Hipot's new instrument addresses these pain points through innovative dual-signal fusion technology.
The core advantage of the acoustic-magnetic synchronous locator lies in its integration of high-sensitivity acoustic and magnetic sensors, coupled with an intelligent digital processing system. When a high-voltage pulse triggers a discharge at the cable fault point, the device simultaneously captures the resulting acoustic vibrations and electromagnetic radiation signals. By analyzing the time difference between these two signals-exploiting the near-light-speed propagation of electromagnetic waves versus the relatively slower propagation of sound waves-the instrument precisely calculates the fault location with an error margin of less than 0.5 meters. It achieves accurate positioning even when cables are buried up to 5 meters deep or enclosed within conduits.
"This instrument represents the culmination of our three-year collaborative R&D effort with university research teams," stated Engineer Sun from Goldhome Hipot Technology. "Our technical team optimized the signal-to-noise ratio through adaptive filtering algorithms, enabling the device to accurately identify fault discharge sounds amidst urban environmental noise like traffic construction. The digital waveform display function further eliminates reliance on operator experience, allowing even novice technicians to perform precise location."
The basic technical parameters demonstrate the multifunctionality of the equipment: it supports fault location for all power cables with a rated voltage below 15 kV, covering open circuits, low-resistance faults, high-resistance faults, and discharge faults. It features a portable design with a long-life lithium battery and can operate continuously for over 8 hours in harsh outdoor conditions with temperatures ranging from -10 °C to 50 °C.
Field tests by State Grid Hebei Electric Power Company confirmed the practical value of the instrument. During a recent urban grid maintenance project, technicians used this device to accurately locate a water ingress fault in a 10kV cable joint-a defect that is difficult to locate using traditional traveling wave methods. The Jinke high-voltage tester completed the precise location in just 20 minutes, reducing the total repair time by more than 60% compared to conventional tools.
Having secured ISO certification and TÜV Rheinland validation, the instrument meets international quality standards, creating opportunities for expansion into the global market. Sales figures show that after a successful demonstration at a recent electric power technology exhibition in Southeast Asia, Goldhome has secured bulk orders from power companies in Indonesia and Vietnam.
The use of this equipment ensures the long-term reliability of energy infrastructure. Thanks to faster fault detection, it reduces the number of outages and improves the overall performance of distribution networks, contributing to the stability of power supply for communities and industry.
