High-grade single-phase standard electric energy meter convenient to assemble

The utility model discloses a high-grade single-phase standard electric energy meter convenient to assemble, and relates to the technical field of standard electric energy meters, an electric energy meter body and a backboard, the rear side wall of the electric energy meter body is fixedly connected with an insertion block used for installation, and the backboard is connected with a first movable connection structure. The first movable connecting structure comprises a limiting sliding block, a limiting sliding groove, a connecting plate, an upper fixing sleeve, a lower fixing sleeve and an inserting groove, the limiting sliding groove is formed in the upper end of the front side wall of the back plate, the limiting sliding block is slidably connected to the inner wall of the limiting sliding groove in an attached mode, and the upper fixing sleeve is fixedly connected to the outer end of the limiting sliding block; the upper fixing sleeve is fixedly connected with a connecting plate, the outer end of the conne