GSI three phase series inverter is off-grid inverter designed and manufactured for new energy power system, mainly apply for PV power station, wind, light, oil,storage complementary generating system and the filed of Photovoltaic power system. Especially need three-phase four wires AC place. We use the new energy power generation with high inverter efficiency and advanced performance to provide absolute reliability for Traffic inconvenience, harsh mountains, pasturing area, border defence,island,etc without electricity area,and can adopt large power three-phase inverter to take the collective power supply mode for no power area.