A Grid-tied Quattro set up as ESS with Fronius PV inverter (Country Code set to 'Other - Not Compliant') on Output using Frequency Shifting. Quattro cannot be installed at grid connection point so cannot use built-in anti-islanding. Loads connected on AC Input and AC Output side of Quattro. Grid connection point is fitted with external anti-islanding relay.
When operating stand-alone as a Micro-Grid - the external anti-islanding relay isolates the grid supply - so there is no external voltage at AC Input, will the Quattro allow and regulate PV power to the AC Input as well as the AC Output?
