This sequence of increasing the load power - well beyond the 6.8kW rating of your XW Pro - felt like the opening scene of Top Gun Maverick! Did you eject in time?? ;-)
Wow! look at the capacitor bank in that beast!
You always do quality work, dougbert! Congrats on the new system. That inverter is a beautiful thing - I love how your other Schneider gear fits so well. I'm jealous!
I like @HaldorEE 's idea of adding a clamp circuit to deal with spikes coming from the solar charge controller if the BMS disconnects. I have seen this with both PWM and MPPT solar charge controllers, causing downstream overvoltage faults at a sine wave inverter and stressed or fried LED house...