Xuchang Ketop Electrical Apparatus Testing & Research Institute (Originally called as Xuchang Relay Research Institute of Mechanical Industry) is an enterprise owned by the whole people, whose competent authority is Xuchang Municipal Commission of Industry and Information Technology. Its predecessor was Acheng Relay Research Laboratory under China First Ministry of Mechanical Industry, which was founded in 1958 and moved to Xuchang, Henan Province in 1971. After many years of development, it has become a specialized research institute of electrical automation industry and power system relay protection in mechanical industry, and a third-party organization that roots in power system and provides high-quality service for all customers related to intelligent electrical appliance industry field.