Casting type combined transformer and casting die and production process for producing combined transformer

The invention relates to a casting type combined transformer and a casting die and a production process for producing the combined transformer. The casting type combined transformer comprises two voltage iron cores, two voltage coils, two current iron cores and two current coils, wherein a lower clamp is arranged at the lower ends of the two voltage iron cores; the lower ends of the two voltage iron cores are respectively fixed on the lower clamp through ribbons; an upper clamp is arranged on the upper ends of the two voltage iron cores; the upper ends of the two voltage iron cores are respectively fixed on the upper clamp through ribbons; a support piece is arranged on each of two ends of the upper clamp; the two support pieces extend respectively towards the direction of each current iron core; one end, close to each current iron core, of each of the two support pieces is attached to the outer edge of the corresponding current iron core and is fixed on the corresponding current iron core through ribbons. The casting type combined transformer has reasonable structural design and stable performance. The casting die has the advantages of simple structure and convenience in casting. The production technology has high production efficiency and low production cost.