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由凡口铅锌矿、长沙矿山研究院、冶金部自动化研究院、清华大学合作研制的我国第一台6kV、800kw矿开通风机同步电机直接高压变频调速装置于1998年4月28日在凡D铅锌有通过了由中国有色金属工业总公司主持的技术鉴定。高压变频调速技术是大型风机水泵调连节能技术中亟待攻克的难
By the lead-zinc mine in Fankou, Changsha Institute of Mining, Metallurgical Department of Automation Research Institute, Tsinghua University, China’s first joint development of 6kV, 800kw mine fan synchronous motor direct high-voltage frequency control device on April 28, 1998 where D lead and zinc have passed the technical appraisal hosted by China Nonferrous Metals Industry Corporation. High-voltage frequency control technology is a large fan pump connected with energy-saving technology in urgent need to overcome the difficulties