Vibration and noise are one of the important technical indexes of design and manufacture of transformer.The real power transformer is taken as the research object

the vibration analysis model of the transformer is set up by using finite element method and the vibration resonance response analysis of oil tank surface of transformer is developed. Then

the vibration isolation technical principle of transformer foundation is discussed

and the calculation formula of design rigidity of isolation layer considering the influence of isolation foundation quality is derived. The advantages and disadvantages of common vibration isolation device and the problems in the design and application of transformer vibration isolation are analyzed. Finally

the foundation isolation design of a set of 10 k V reactor is performed and the reasonable design parameters of the isolation layer are discussed. The results show that it is feasible to analyze vibration of oil tank surface by adopting resonance response method by way of simplifying appropriately the electromagnetic force stressed on the core and winding to the single point excitation input of simple resonance load. The vibration isolation of transformer foundation can effectively attenuate the transmission of vibration foundation and surrounding structures. As long as the isolation frequency ratio of the transformer λ is within 4～10 and the reasonable selection range of the damping ratio ξ is 5%～20%

the isolation efficiency of the foundation can reach more than 90%. The research will provide a good reference for the vibration and noise prediction and vibration isolation design of transformer equipment in the future.