Do you have an idea, how to solve the risk to damage the generator in an ESS system, when the grid fails, batteries are low but CCGX starts generator for backup. Fronius with MG is AC coupled in the output of the Quattros, if Sun comes suddenly and AC2 input relay from generator is closed Fronius could feed back. Do you have an idea to solve this risk? or there is not such a risk to damage the generator? I can not change frequency in the generator it is 60Hz (stable).