The company purchased one ABB vacuum oil filter with more than 900000 yuan in 1998. The operating noise of the machine is large, and the treated transformer oil always contains acetylene, which cannot meet the current oil filtering requirements. In order to revitalize the assets and give full play to the functions of the equipment, the company and Chongqing Qianguang Electromechanical Research Institute agreed that we would transform the ABB oil filter. The acetylene of transformer oil treated by the reformed oil filter is zero. At present, the reconstruction work has been completed, and the requirements have been met and the operation is normal. (See user acceptance report)