Hi All,
i am using STPM34 for metering application to measuring the Energy used in the EV charging station.
As per the development board design provided by the ST to measure the AC voltage , the Neutral lone is connected directly to the comment GND for STPM34 ic. Refer the below images-1 of the same schematic.
To avoid the direct connection the Neutral line to the IC GND ,i am planning to use a series resistor in the neutral line to the ICs GND . Please conform it make any measuring errors in the values. Refer below image-2.
Image-1
Image-2
