High-precision three-phase electric energy meter

Provided is a high-precision three-phase electric energy meter, comprising a measurement module and a DSP module, which are connected via an SPI bus. The measurement module comprises a first current type voltage transformer, a first current transformer, a first signal conditioning circuit, a special electric energy metering chip, an MCU, a first power source and other peripheral modules. Both the first current type voltage transformer and the first current transformer are connected with the first signal conditioning circuit, which is also connected with the special electric energy metering chip. The special electric energy metering chip is connected with the MCU, which is in connection with the other peripheral modules. The first power source supplies power to the MCU. The DSP module comprises a second current type voltage transformer, a second current transformer, a second signal conditioning circuit, a DSP and a second power source. Both the second current type voltage transformer and the second current tra