The invention discloses a high-
voltage high-frequency
transformer with a single-phase high-power special insulation structure. The high-
voltage high-frequency
transformer comprises a shell, an iron core arranged in the shell, a low-
voltage inner coil wound on the iron core column, a high-voltage
outer coil wound on the periphery of the low-voltage inner coil, and a lead connected with the leading-out terminal of the high-voltage
outer coil, wherein the lead goes out of the shell, an iron core
insulation layer is arranged between the low-voltage inner coil and the iron core column, a first encapsulation reserved gap is formed between the low-voltage inner coil and the high-voltage
outer coil, and a second encapsulation reserved gap is formed between the high-voltage outer coil and the inner wall of the shell; and
epoxy resin insulation
layers are filled in the first and second encapsulation reserved gaps. Compared with the prior art of the existing high-frequency transformers (dry-type, air self-cooling type), the high-voltage high-frequency
transformer has the advantages that the volume is reduced for more than 30%; 2, the
leakage inductance is reduced for more than 80%; 3, the loss is reduced for more than 50%; and 4, the high-voltage high-frequency transformer has good
electromagnetic compatibility with other electrical appliances in the cabinet body (the aluminum shell is grounded, and the
electric potential is zero).