Built-in lightning arrester on-line testing device

The invention relates to the technical field of lightning arresters, and discloses a built-in lightning arrester on-line testing device which comprises a lightning arrester body, a discharge counter, a live testing device, a data acquisition device and an analysis device. The discharge counter is used for recording the discharge times of the lightning arrester body; the live test device is used for placing a cable; the data acquisition device is used for acquiring data generated by the lightning arrester body, the discharge counter and the live test device in real time; according to the lightning arrester on-line test system, an original conventional lightning arrester power failure test is replaced by a lightning arrester on-line test mode without power failure, so that the lightning arrester on-line test system has certain perspectiveness; the device has a positive guiding effect on the development trend of follow-up electrical equipment from a power failure test to live-line detection, ensures that live-li