NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
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NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
Author: Noyafa–Cable Tester Manufacturer
Question: What are some tips for power cable fault detection? Answer: The positioning of cable faults is gradually increasing with the different cable laying methods. Among them, bridges, tunnels, and open-laying methods in trenches are relatively simple to locate and find, and direct-buried methods to locate and find problems: What are the tips for power cable fault detection? Answer: The positioning of cable faults is gradually increasing with the different cable laying methods. Among them, the location and search of bridges, tunnels, and trenches are relatively simple, and the direct burial method is the most difficult.
When the nature of the fault is simple, a special cable fault locating device is used, which can be located within a few minutes. When the fault is special, it often takes 4-5 days, or even longer time to locate the fault. How to quickly locate cable faults? The power cable fault detection center will teach you some tips. When using the echo method to locate cable faults, sometimes complex faults are often transformed into simple faults by transferring faulty phases and wiring methods, quickly determining the fault location, and gaining time for on-site line repairs. This is about the power supply application department. serious meaning.
Low-voltage power cables are generally multi-core cables. After the failure occurs in continuous use after laying, there are usually two-core and multi-core short-circuit faults between phases or relative to ground. Sometimes when it is detected that the faulty waveform collected by a certain core is not ideal, it can be considered to switch the wiring to other faulty cores to detect the faulty waveform, which often produces unexpected effects. The acquired and detected waveforms will become By comparing the typical and the rule, you can quickly determine the specific location of the faulty point of the cable. During the long-term on-site measurement of cable customers, it was found that after the failure of small-section copper-core direct-buried power cables (35mm2 and below) and aluminum-core cables, short-circuit and disconnection failures may be accompanied at the same time. The difference between short-circuit faults and wire-break fault measurement is often done with less effort.
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