Long-distance low-voltage electricity testing tool for data center

A long-distance low-voltage electricity testing tool for a data center relates to the technical field of electricity testing tools and comprises a telescopic rod piece, a contact floating ball detachably arranged at the telescopic tail end of the telescopic rod piece and an electricity testing assembly arranged in the telescopic rod piece, and the electricity testing assembly is electrically connected with a metal contact at the end of the contact floating ball. The contact floating ball comprises a lower floating ball, an upper floating ball, a gravity center block arranged in the upper floating ball and a metal contact arranged at the upper end of the upper floating ball, wherein the lower floating ball and the upper floating ball are vertically stacked and fixed. The lower end of the lower floating ball is detachably connected with the telescopic tail end of the telescopic rod piece. The device is simple and compact in structure, adapts to various use scenes, is strong in functionality, judges whether an a