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
Methods of Detecting Cable Faults Cable faults are the inability of the cables to provide power transmission and load status indications during operation. It is not difficult to find in the fault analysis report of the cable fault of the pilot test group, the cable fault is usually divided into open circuit fault, short circuit fault and cable fault detection method. Cable fault refers to the status indication that the cable cannot provide power transmission and load during operation. . It is not difficult to find in the fault analysis report of the cable fault of the pilot test group, the cable fault is usually divided into open circuit fault, short circuit fault and high resistance type.
faults and low resistance faults. From the perspective of the possibility of application fields of high and low voltage cables. The probability of ground faults in low voltage cables is much higher.
Conversely, most high voltage cables are high impedance faults. Of course, we only refer to some after sales. Probability ratios were obtained from data from the Statistics Department.
Specifically, the characterization of cable faults requires data support. Usually digital megohmmeters and multimeters are used. This time, we share with cable fault tester, high and low voltage cables.
Basic fault detection methods. Principle and method of cable fault detection? At present, in the field of cable fault finding, the principle of cable fault detection is basically the same, the difference lies in the processing method and processing method based on this principle. Take the cable fault tester as an example, use"Low pressure pulse method"and"high pressure""flashover".In addition, the secondary 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 means that the fault resistance of the faulty cable is small. According to the application experience of the pilot test group, when the resistance is less than 200 ohms, the faulty cable can be located by the potential difference between the two points. Pinpoint and learn how to find low voltage cable faults.
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