The price of oil-immersed transformers varies widely due to factors such as model, capacity, brand, energy efficiency rating, and market supply and demand. Below are some examples of the prices of oil-immersed transformers with common models and capacities:

　　S11 Series:

　　630kVA aluminum winding model: approximately 27,000 yuan

　　630kVA copper winding model: approximately 44,000 yuan

　　800kVA aluminum winding model: approximately 33,000 yuan

　　800kVA copper winding model: approximately 52,000 yuan

　　S13 Series:

　　630kVA aluminum winding model: approximately 39,000 yuan

　　630kVA copper winding model: approximately 50,000 yuan

　　800kVA aluminum winding model: approximately 47,000 yuan

　　800kVA copper winding model: approximately 55,800 yuan

　　Transformers with Other Capacities:

　　100kVA oil-immersed transformer: the price may range from 8,000 yuan to 12,000 yuan

　　200kVA oil-immersed transformer: the price may range from 15,000 yuan to 18,000 yuan

　　500kVA oil-immersed transformer: the price may be higher, depending on the brand and model

　　Special Models:

　　For example, the S20-M-500KVA/10-NX2 three-phase fully-sealed oil-immersed transformer (with a secondary energy efficiency rating): approximately 78,000 yuan

　　Mining oil-immersed transformer (such as the KS11-125KVA Dyn11 copper winding model, capable of overloading up to 400KVA): approximately 25,000 yuan