The AC resistive inductive capacitive load is designed in accordance with the RLC load part in IEC62116-2008 "Test Methods for Islanding Protection Measures of Connected Photovoltaic Inverters". It adopts segmented combined control and supports sudden loading/unloading. The resistive part uses self-developed power modules, which feature high power density, strong heat resistance, and forced air cooling to ensure continuous operation of the load. The inductive load reactor adopts high-silicon high-quality oriented silicon steel sheets. All insulating materials and electromagnetic wires are of F/H grade and manufactured in accordance with national standard requirements. They feature low loss, excellent insulation, good heat dissipation, corrosion resistance, moisture resistance, strong shock resistance, and are safe and reliable. The capacitive load capacitor adopts the standard container certified by GB/T3667-2005, featuring small size, light weight, good electrical performance, low loss, excellent self-healing (SH) property, and an internal pressure-type explosion-proof device, ensuring safe use. During the loading test process, the capacitor impedance and power will not change. Ac resistive inductive capacitive load, 7 load combinations, R load /L load /C load /RL load /RC load /LC load, RLC load, can simulate various test working conditions of users and is an indispensable R&D and testing equipment for power supplies, generators, photovoltaic energy storage inverters and other products.