Three-phase high-precision multifunctional electric energy meter

The utility model belongs to the technical field of a three-phase electric energy meter, and relates to a three-phase high-precision multifunctional electric energy meter. A master controller is respectively connected with a communication circuit, a memory circuit, a clock circuit, a button circuit, a metering module and a display driving circuit in an electrical information way via a regular interface mode so that control of each circuit unit by the master controller is realized. The input end of the metering module is respectively connected with a voltage sampling circuit, a current sampling circuit and a network card in the electrical information way. The input end of the network card is connected with an ethernet interface. The output end of the display driving circuit is connected with a displayer. The communication circuit is a circuit unit with an RS485 communication interface. A memory integrated circuit in the memory circuit selects an FM24CL64. The master controller selects a single-chip microcomputer with a series model number of STM32F207ZE. An electric energy metering chip in the metering module is an ADE7880. The three-phase high-precision multifunctional electric energy meter is simple in structure, low in cost, small in volume, low in power consumption, high in reliability, great in generality, high in anti-interference capability, great in compatibility, high in antistatic capability and easy to upgrade and renovate.