In the field of traditional power transformers, the laminated core structure has been used for hundreds of years, but its shortcomings such as discontinuous magnetic circuits, unbalanced three-phases, and large amounts of consumables have become increasingly prominent. With the advancement of the global "dual carbon" strategy and the energy efficiency upgrade of distribution networks, three-dimensional wound core transformers are becoming the mainstream choice for a new generation of energy-saving transformers due to magnetic circuit optimization and structural innovation. This article will give you a comprehensive understanding of this product from the structural principles, core advantages, comparative analysis and application scenarios.