I just had my first power bump with the powerwall. It did not behave as expected. It did supply power to the house, but a secondary UPS I had would not stay on - when I checked the frequency, it was showing 65hz.
It would appear that as the power went out, there was a slight frequency deviation that the powerwall followed - this frequency shift then kept the solar panels from coming back online.
Is there a setting I can adjust so that the powerwall goes to 60hz when it is providing backup power?