Principle of Buried Cable Fault Tester

Compared with buried wires, buried wires and cables have been used in China for decades. The buried cable fault tester has developed from resistor bridge, capacitor bridge detection and standing wave detection at the beginning of Zui to flashover detection. The development trend of instruments and equipment has experienced the flash detector for general oscilloscope tube display information and the flash detector for storing oscilloscope tube display information. Up to now, intelligent instruments and equipment have been developed, produced and manufactured. The buried cable fault tester adopts large-scale integrated circuit chip, electronic computer solution technology, LCD display technology and other new technology applications, new technologies and new processes. After the wire and cable testing equipment is improved, the common faults of ground buried double eyelid are detected, which has good practical effect and high efficiency. After many practical activities, the common faults of a buried cable double eyelid are generally detected. The buried cable fault tester has a high success rate within 30 minutes from the beginning to the end. Principle of buried cable fault tester 1. The buried cable fault tester uses a unique acoustic frequency vibration sensor and low-noise special components as external components, which further improves the sensitivity of instrument and equipment designation and relative path detection. In terms of signal analysis technology, the distance between the common fault points of digital display information and the sensor technology camera greatly eliminates the one sidedness of designation. 2. When detecting the fault of buried cable, the common fault cable in the empty frame in the cable trench. In the past, the vibration sound of the whole cable makes all the designated instruments helpless, and it is impossible to judge the specific address of the closed common fault. Now, if the controller camera of the instrument touches the common fault cable or the nearby cable line, the information can be directly displayed, and the common fault spacing and orientation can be quickly identified without effort. 3. Based on the basic theory of DC response cancellation and high DC notch technology, the buried cable fault tester greatly improves the suppression and anti-interference of 50Hz DC data signal in the natural environment of strong power frequency electric field, and reduces the specified blind spot. In terms of the function of instruments and equipment, the acousto-electric technology is used to accept the photoelectric technology, which reasonably gets rid of the difficult problem caused by the impact of natural environmental noise on the designated site. In particular, the large digital display information of common fault spacing eliminates the operator's specific analysis of complex wave type, and replaces the rough distance measurement function of flash detector to a considerable extent. For the common fault cable hundreds of meters long, the designation can be carried out without rough measurement, which is truly efficient, rapid and accurate. Using 15z amplitude modulation radio wave and amplitude detection technology for relative path detection and deep measurement of cable laying, the influence of TV line frequency on the designated instrument in the original equal amplitude 15z video signal is prevented. 4. The fault detection of buried cable is very simple in practical operation. You can turn on the main power switch without shifting gears and selecting functions. Compact structure, exquisite and modular design, which is conducive to on-board maintenance and complete functions. Buried cables are widely used in recent years. Therefore, there are many ways of buried cable fault tester, which are not well understood by rural welders and repair and test workers. There are common faults in the ground buried line. If there are no excellent instruments and equipment and good test standards, the common faults can not be removed within the service guarantee period of the power supply system company, which not only delays time and wastes human resources. And affect normal life and industrial production.

Principle of Buried Cable Fault Tester 1

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