I have a AC coupled 5kW system.
Every now and again, during a power outage, I receive a overload alarm and once a system shutdown when the system switched over to inverter power. The thing is, there was no loads to justify the overload.
I have noticed during the triggering of the outage, it takes some time for the grid inverter to react and that value that was feeding back into the grid starts to show on the load-side.
I am just wondering, due to the time delay, the system sees the generation in the load and thinks it requires the batteries to meet that load, which is in fact the generation.
I have also seen this on a few of my systems and wonder if anyone else has experienced or noticed this.