Hello
Customer use ADE7880 and some questions as below.
1.Does neutral phase must add CT for current measurement?
2.What is condition that need to add CT to measure neutral phase current?
3. If not measure neutral phase current, the accuracy of voltage and current measurement will be affected?
BR
Patrick
1. The neutral current can be a ct, shunt or Rogowski coil same as channel IA,IB or IC. You can get ISUM which is a calculation IA+IB+IC as at the sample level see below
https://www.analog.com/media/en/technical-documentation/data-sheets/ADE7880.pdf pg 37
2 same as any other current channel.
https://www.analog.com/media/en/technical-documentation/user-guides/UG-356.pdf pg 4
3 if you do not use this it will no impact to any other channel measurement.
Dave
1. The neutral current can be a ct, shunt or Rogowski coil same as channel IA,IB or IC. You can get ISUM which is a calculation IA+IB+IC as at the sample level see below
https://www.analog.com/media/en/technical-documentation/data-sheets/ADE7880.pdf pg 37
2 same as any other current channel.
https://www.analog.com/media/en/technical-documentation/user-guides/UG-356.pdf pg 4
3 if you do not use this it will no impact to any other channel measurement.
Dave
