Dry-type transformer and production process thereof

The invention discloses a dry-type transformer and a production process thereof. The dry-type transformer comprises a base, two lower clamping pieces installed on the base, three iron cores installedon the lower clamping pieces at intervals, two upper clamping pieces mounted on both sides of tops of the iron cores, three high-low voltage coil groups, transformer body insulating parts, and hardware connecting pieces used for connecting the high-low voltage coil groups with the iron cores, The three iron cores are sleeved with the high-low voltage coil groups respectively, the transformer bodyinsulating parts are arranged on the high-voltage coil group and the low-voltage coil group. The production process comprises the following steps: 1, coiling a high-voltage coil; 2, winding a low-voltage coil; and 3, carrying out general assembly on the high-voltage coil in the step 1, the low-voltage coil in the step 2, the iron cores, the base, the upper clamping pieces, the lower clamping pieces, the transformer body in