Vacuum drying oiling method for main transformer of electric locomotive

The invention relates to the technical field of oiling technique for main transformers of electric locomotives, and in particular relates to a vacuum drying oiling method for a main transformer of an electric locomotive. The method comprises the following steps of: I, oiling preparation; II, vacuumizing an oil storage tank above an oven; III, oiling the oil storage tank above the oven; IV, heating oil in the oil storage tank; V, vacuumizing the drying oven; VI, oiling the main transformer; and VII, finishing the oiling. In the invention, a new oiling method and a new oiling technique are adopted, the overhauling of the main transformer of the electric locomotive is facilitated, and the oiling quality and the overall operation quality of the main transformer are improved.