Casting dry-type transformer and manufacturing method thereof

A casting dry-type transformer, comprising a coil, an iron core, a clamp and a leading wire, wherein the leading wire is led out from the coil, the coil is arranged on the iron core, the coil and the iron core are fixed together by the clamp at two sides, the coil is provided with a casting die for casting the coil, the casting die is internally provided with evenly distributed channels, and the coil is casted with a casting material, wherein the casting die is made of an insulating material, and is combined with the coil into an integrated structure without disassembly after casting;

• the iron core comprises three individual frames, and one core post is formed at a spliced part of every two individual frames;
• the coil further comprises an inner coil and an outer coil, the inner coil is wound between the core post and the outer coil, the casting die comprises an inner casting die and an outer casting die, the inner casting die is arranged at an inner side of the outer coil, the outer casting die is arranged at an outer side of the outer coil, and the leading wire comprises an inner coil leading wire and an outer coil leading wire;
• the inner casting die and the outer casting die are both made of an insulating material;
• and
• the channels are located between the inner casting die and the outer casting die, and the channels are configured for injection or discharge of a casting material.