The invention discloses a device and a method for testing electrical fast transient / burst (EFT / B)
immunity of an
electric energy meter, and can be used for testing
active load,
reactive load and high-
current load and the like. In the device, a
voltage port of a check device of the
electric energy meter is connected with an input port of a
power filter of a
voltage circuit; an output port of the
power filter of the
voltage circuit is connected with an input port of an EFT test
signal generator; a current port of the check device of the
electric energy meter is connected with an input port of a
power filter of a current circuit; and a pulse port of the check device of the electric energy meter is connected with an input port of a filter of a pulse circuit. The test method comprises the following steps: during the test, a pulse
train interference
signal generated by the EFT test
signal generator enters the electric energy meter under test through the voltage circuit; the check device of the electric energy meter supplies voltage and current signals needed for operation to the electric energy meter under test and obtains error values of the electric energy meter; and the power filter of the voltage circuit, the power filter of the current circuit and the filter of the pulse circuit respectively perform filtering
processing on the voltage circuit, the current circuit and the pulse circuit so as to eliminate interference.