Comprehensive error detection device used for digital electric energy measuring device

The utility model relates to a comprehensive error detection device used for a digital electric energy measuring device. By adopting a standard voltage transformer, a standard current transformer, a standard electron transformer detector and a standard power meter, the device can measure the value of standard instruments by adding rated voltage and rated current to the voltage transformer and the current transformer in the circuit to be checked, and compare the measured value of the tested instrument with standard ones, thus realizing the comprehensive error detection for a digital electric energy measuring system including an electron transformer, a combining unit, an Ethernet network and a digital interface type electric energy meter. The comprehensive error detection device has the advantages of simple structure, convenient operation and accurate measurement of the comprehensive errors of all digital power measuring devices, and can be used for the error detection of electronic voltage transformers and current transformers.