As the technology of cable fault detector is constantly updated, the positioning accuracy of the cable fault detector is getting higher and higher. At present, cable detector equipment commonly used detection technology has two kinds, low voltage pulse method and multiple pulse method. So what are the differences between low voltage pulse and multiple pulse of cable fault detector?
In the actual working process of cable fault detection test, cable faults are mainly high resistance faults and low resistance faults in general. The low-voltage pulse method and flash method in the pulse method solve the low and high resistance cable faults, with high accuracy and not affected by artificial factors. So it becomes the main application method of power cable fault detection test. The working principle of the low-voltage pulse method of power cable fault is that a low-voltage pulse wave is injected into the cable test end, and the pulse wave propagates along the cable to the fault point, generates reflection and then sends back to the cable fault tester. Together, the time interval between the transmitting pulse wave and the reflected pulse wave is recorded. The distance of cable fault point can be calculated by knowing the propagation velocity of pulse wave in cable.
The principle of multiple pulse test is developed on the basis of low-voltage pulse detection technology. In addition to having all the advantages of cable fault tester with secondary pulse method, the advanced feature is that the fault waveform obtained by field test gives operators more options. In order to obtain an ideal secondary pulse waveform, the delay time of the test pulse is no longer constantly adjusted during the test, which reduces the technical and experience requirements for operators. It improves the judgment accuracy of on-site faults. Anyone can easily and accurately interpret the waveform, calibrate the fault distance, and achieve the purpose of fast and accurate cable fault testing.
Cable fault tester series produced by Wuhan Xinshengneng Technology Co., Ltd. has the characteristics of high intelligence, complete functions, wide range of use, accurate test, easy to use and so on. More cable fault tester related articles, all in Wuhan Xinshengneng Technology Co., LTD. Official website: www.whxsn.com!
