We are implementing a voltage divider circuit to measure the three phase line voltages. This circuit will require a common ground.
We have to measure the voltage across the resistor using an ADC.
Is it advisable to use this circuit connecting the AC ground line
with the digital ground?
If not can anyone suggest a better circuit? We don't want to use transformers, its too costly as a solution.
How can we handle line transients at this point?
I have heard something about class x1/y1/y2 suppression capacitors.
Need more info on this. Please recommend a site to read also.
Thanks.
We have to measure the voltage across the resistor using an ADC.
Is it advisable to use this circuit connecting the AC ground line
with the digital ground?
If not can anyone suggest a better circuit? We don't want to use transformers, its too costly as a solution.
How can we handle line transients at this point?
I have heard something about class x1/y1/y2 suppression capacitors.
Need more info on this. Please recommend a site to read also.
Thanks.