Have you ever seen this behavior on your grid?
Checking the individual inverters, they all drop at the same time and stay off for 3ish minutes before coming back. This, to me, says that the MAINS had a voltage sag and turned off my grid. I dont see any evidence of a sag when I am in the house in the morning. I am tempted to put on a data logger on the line to see what I can see, but its a bit complicated to get it going.
This happens every weekday about the same time (within a minute or two).
Has anyone ever seen behavior like this? is this some sort of thing the power companies do as a diagnostic?