What is the function of "FVRT" in my inverter settings?

FVRT means Low Voltage Ride Through, It refers to the ability of power equipment such as photovoltaic inverters to remain connected to the grid and operate without disconnection when the grid voltage experiences a short-term reduction (for example, due to faults, short circuits, etc.) in the power system, and to quickly resume normal output after the grid voltage returns to normal.