The transient characteristic distribution line fault indicator is applied in the field of overhead line fault location. It is a distribution automation product integrating wireless radio frequency communication, small current power acquisition, low power consumption and other technologies. This product solves the problems of short circuit fault detection of overhead lines and single-phase grounding positioning, and has the real-time monitoring function of line load. The acquisition unit is designed to be suspended, which is safe and reliable for live installation, and has a wide range of applications with self-powered function.