What is the method of troubleshooting power cable faults?

I. Power cable fault detection method is how? (1) when the defective point resistance is equal to no amount of large, with high-voltage pulse method of measurement is easy to find the shortcomings of the circuit breakers in general, the ground breakers shortcomings are not rare, usually breakers shortcomings for the relative ground or phase-to-phase high-resistance shortcomings and relative ground or phase-to-phase low-resistance shortcomings coexist. (2) when the shortcomings of the resistance is greater than the low Wen less than 100 kilo-ohms, with high-voltage pulse measurement is easy to find low resistance shortcomings. (3) flash shortcomings can be measured by the direct flash method, this shortcoming commonly exists outside the joints, shortcomings resistance is greater than 100 kOhm, but the value of the change is large, each time the measurement is uncertain. (4) flashover shortcomings occur in the preventive voltage test, most of the parts in the cable terminal and in the direct head. (5) high-resistance shortcomings can be measured by the flash method shortcomings resistance greater than 100 kilohms and the value of certainty, these devices can make its measurement error is controlled within a few tens of centimeters, directly find the shortcomings to stop disposing of shortcomings to improve the efficiency of the shortcomings of the measurement of the search for, such as the current use of audio signals to the cable at the shortcomings of the point of acceptance of the signal testing technology and the application of the CD-12-22 cable shortcomings tester for the accurate positioning of shortcomings point. The

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