Hello, I am Alberto and I am working as a hardware engineer in a Spanish company. We want to make a device for energy metering on AC grids (one an three phase). The ADE7878A or ADE7868A looks good, they are 3-phase with neutral current measurement, but I have a doubt.
I would like to measure a current in a 3-phase grid using a shunt resistors, but datasheet of ADE7868A and ADE7878A sais that only could be used with current transformers or Rogowsky.
Why I can not use a shunt resistor? There is any way to use it?