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–POE checker
Why do some people use the cable fault tester but can't find the fault point? In the process of using the power cable, due to the influence of many factors such as moisture and external force damage, power transmission faults sometimes occur, resulting in power outages. Why do some people use the cable fault tester but can't find the fault point? During the use of the power cable, due to the influence of many factors such as moisture and external force damage, sometimes power transmission faults will occur, resulting in power outages, It brings a lot of inconvenience to people's production and life. It is necessary to find the fault point in time and repair it. Therefore, it is necessary to use a cable fault tester to find the fault point of the cable. However, when many electricians use this equipment, how can If the fault point cannot be found, precious repair time is wasted, so what is the reason for using the cable fault tester to find the fault point? The cable fault tester is a relatively precise high-voltage power test equipment. In the process of use, it needs to be used in strict accordance with the requirements of the manual. At the same time, users need to have certain experience in using the cable fault tester. To accurately locate the faulty cable, pay attention to the following points: Adjust the parameters of the high-voltage signal generator and connect the high-voltage discharge generator first to ensure the periodic discharge of the high-voltage discharge generator, and the discharge period is 2~3 seconds. In order to more effectively determine the location of the fault point, the gap between the discharge balls can be appropriately increased (be careful not to exceed 10mm), which will make the discharge more sufficient, and the sound field radiation of the fault point will be stronger, which is convenient for fast positioning. Parameter adjustment of the pointing device Second, it is necessary to use the pointing device correctly, and insert the connecting wire at one end of the probe into the fault locator.“probe”interface.
At the same time, before locating the fault, it is best to first simulate and locate the fault point near the discharge generator (adjust properly“Acoustic gain”, the closer the fixed-point sensor is to the high-voltage discharge ball gap,“Acoustic/Path Signal”The stronger the indication. At the same time, you can also hear strong sound in the headphones“bang bang”Voice). The prediction of the fault point of the buried cable needs to ensure that the high-voltage discharge generator discharges periodically, and find the fault point along the path within the approximate range of the fault point.“fault length”It is not equal to the ground distance from the fault point to the beginning of the cable, so don't easily believe your own judgment on the approximate range of the fault point, you can appropriately expand the search range of the fault point.
To achieve the above three points, then you need the practical experience of electric power workers. After all, finding cable faults often requires the experience of people who use equipment. Some people can find the same equipment, and some people just can't find it. Therefore, the test method of the cable fault tester needs to be mastered. Shenzhen Noyafa Electronic Technology Co., Ltd.
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