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
The main method and method of cable fault test of wire tester The main method and method of cable fault test of wire tester, if it is used for cable fault test, the most important thing is a detection requirement on cable fault, so what is cable fault? Cable fault refers to the status indication that the cable cannot provide electrical energy conduction and link the past and the future during operation. In the fault analysis report of Noyafa, it is not difficult to find that cable faults are generally divided into open-circuit faults, short-circuit faults, high-resistance faults and low-voltage faults. For resistance faults, from the probability of the application field of high and low voltage cables, the probability of ground faults in low voltage cable faults is much higher. On the contrary, most high voltage cables are high resistance faults. Of course, we only refer to some after-sales data to get a probabilistic ratio. Specifically, the qualitative analysis of cable faults requires data support. Usually, digital megohmmeters and multimeters are used. This time, we use cable faults to test The instrument shares the basic detection methods of high and low voltage cable faults. At present, in the field of cable fault finding, the principle of fault cable detection is basically the same, the difference lies in the way of processing through this principle is different.“Low pressure pulse method”and“high pressure flashover”, In addition, the two-pulse cable fault tester and the multi-pulse cable fault tester have the same measurement principle, but in order to meet the needs of different users, the processing methods are different.
The low-voltage pulse method refers to a principle method adopted in that the fault resistance of the faulty cable is relatively small. According to the application experience of Dingsheng Power, when the resistance is less than a certain ohm, the fault point can be located by the potential difference between the two points. Accurately locate and learn how to find low-voltage cable faults. This is the main market value to be controlled as the main way of current cable failure. The main methods and methods of cable fault testing wire tester Shenzhen Noyafa Electronic Technology Co., Ltd.
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