zy series highly effective vacuum oil purifier is an appointed product by china state electric power corporation. the purifier adopts a high effective vacuum and the internationally advanced stereo-evaporation technologies, these technologies enable a highly effective removal of water, gas and impurities without switch off of power or change of oil which allows transformers running as usual. with these technologies, the oil's breakdown voltage is increased and quality improved which recover the waste oil back to the specifications of new oil and at same time ensures the safe operation of power generation equipment. the product is widely applied to areas of power station, power company, transformer substation, railway, petrochemical industry and metallurgy. the product is also a special facility of electric power and industrial enterprises for treatment of various insulation oils including unqualified transformer oil, mutual inductor oil and circuit breaker oil, as well as a best choice for vacuum oiling of power equipment and drying of moisture of power equipment.