Device and method for testing noise immunity of power frequency magnetic field of electric energy meter

The invention provides a device and method for testing the noise immunity of a power frequency magnetic field of an electric energy meter. The device comprises a 0.02 level standard equipment cabinet, an exciting current source and an automatic coil overturning device. The automatic coil overturning device comprises a proximate matter frame, a motor driving device, an electric energy meter rotating mechanism and an electromagnetic coil. The exciting current source is placed on the bottom layer of the automatic coil overturning device. An automatic power frequency magnetic field detecting coil module is placed inside the automatic coil overturning device. The method includes the steps that (1) a working power supply is supplied to the electric energy meter by a 0.02 level power source, and the electric energy meter is placed on a tray; (2) electricity is supplied to the coil by the exciting source; (3) the coil is driven by a motor to rotate; (4) test data are uploaded to a computer, so that a test is complete