Power Cable Fault Detection Technology Applied Research

With the extensive use of power cable, the original feature that hard to seek cable fault influenced the electrified wire netting safe operation and the people's living. The environment of cable fault tests so badly, the static is so big that hard to rapidly to find the breakdown spot used of traditional precise method of fixed points. But, using the application sound magnetic-synchro law is advantageous to found the breakdown spot quickly. This article introduces the causations of cable fault and the types of fault, gives a detailed explanation of low voltage impulse method and impulse pressure method which are used for detecting faults. Based on the detailed explanation, it also expatiates what is and how to operate the fundamental theories of second-impulse method.