The RLC Load Banks for Anti-Island Testing is a device used by grid-connected inverter manufacturers to conduct anti-islanding tests. It can simulate resistive, capacitive, and inductive AC loads to test the inverter's output power and load capacity, and to adjust the resonant point of the photovoltaic inverter. Its power input uses segmented combination control, supporting free combinations of resistive, inductive, and capacitive loads. It can measure parameters such as voltage, current, frequency, and power, meeting the requirements of grid-connected inverter certification standards such as CGC/GF004:2011 and IEC 62116-2008.