positioning
Key words:
The cable fault location device uses the principles of vibration sound pickup and electromagnetic induction to accurately locate the cable fault point. The high-voltage pulse generator triggers flashover discharge at the fault point, and the generated vibration waves, sound waves and electromagnetic waves are picked up by a special probe, amplified and processed by the instrument, and output through audio-visual signals, ultimately achieving accurate positioning of the fault point within the rough measurement range directly above the cable. The device is suitable for power cables, high-frequency coaxial cables, street light cables and underground wires of different cross-sections and media. It can detect low-resistance, short-circuit, open-circuit and broken wire faults, as well as high-resistance leakage and high-resistance flashover faults. The technical parameters meet the "DL∕T 849.2 General Technical Conditions for Special Testers for Power Equipment Part 2: Cable Fault Location Device" standard.
The cable fault location instrument locates the fault point based on the principle of vibration pickup and electromagnetic induction: the high-voltage pulse triggers the flashover of the fault point, and the vibration/sound wave/electromagnetic wave generated is picked up by a special probe, amplified and processed by the instrument, and displayed. The tester completes the precise positioning within the rough measurement range directly above the cable through audio-visual judgment. It is suitable for low-resistance, short-circuit, open-circuit and high-resistance leakage and high-resistance flashover faults of power cables, high-frequency coaxial cables, street light cables, and underground wires with different cross-sections/media. The technical parameters meet the anti-interference requirements of GB/T 18268.1 and the acoustic and magnetic location standard of DL/T 849.2-2019.
A complete set of air knife positioning system lifter includes three parts:air knife vertical positioning device,air knife horizontal positioning device and baffle manual positioning device
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