those charts show no large loads or low battery near the brown out time.
since that brownout event, I got permission from the power company (nli.coop) to enable grid tied mode.
In grid tied mode, the inverter syncs the inverters load output voltage with the grid voltage.
This keeps the load input up to grid level (or slightly above to make exporting happen)
The concern is that (besides appliance repair from the brown out) when the grid goes down will it keep the load output voltage high enough ( 240 VAC +- 5% ) to avoid damage to the things being powered?