External CT clarification
Hi all, I have a 6kw hybrid inverter setup, after I upgraded from a grid tie to a hybrid with net metering setup, I've been trying to study how this whole PV system works and optimize my setup, like rewiring or adding circuits for non essential use, and digging through the deye setup. I found out that the way the system was wired is very different from the manual, particularly the CT was only reading incoming power from grid and the inverter grid port has a different line to the rec meter. From what I understand, the CT should be able to read both direction, but to do that for my setup I have to put it between the main meter and rec meter, but that wire where the CT should be placed is enclosed and sealed by the DU on a pole outside our house about 20 meters away.
I hope I have described my setup clear enough to visualize.
So I have been researching other ways to get a proper CT reading and stumbled on using 2 single phase smart meter like Eastron SDM120CT, one reading export line and the other reading the import line then combine the reading through modbus. Well actually just google ai result describing it. So I'm here seeking a more valid answer. Is this possible or are there other ways I can explore?
Thanks in advance.
edit: added diagram : excluded panel and battery
- you can see in the image, the CT can only read consumption from the grid. As of now, the inverter is set to Zero Export to Load with "Solar Sell" enabled. My understanding is that the CT should be placed where it can read both import and export direction, so I can use Zero Export to CT and should be able to power non-essentials from PV/Battery if needed as long as there is power from grid. For example during night time, so it's not consuming from grid. I understand that if power from grid is down, non-essential load is also down.