Guangzhou Lieqiao Substation, known as the “Power Box,” is Guangzhou’s first publicly accessible smart substation and a flagship demonstration project for China Southern Power Grid. Zhengtchao Electric supplied intelligent AIS to the substation, featuring an externally mounted motor-operated controller. This high-performance, highly reliable switchgear is fully integrated into the substation’s digital framework, enabling smart operation and forming the intelligent hardware backbone of the “Power Box.”




