The high-voltage windings of dry-type transformers are solidly insulated using copper conductors, glass fiber, and resin. The low-voltage windings are either wound with oxygen-free copper foil or multiple parallel wires encapsulated in resin. The core is made of high-quality, cold-rolled grain-oriented silicon steel sheets with high magnetic permeability, providing high mechanical and electrical strength, as well as excellent heat dissipation performance. Furthermore, these transformers offer additional advantages such as low partial discharge, high reliability, long service life, moisture resistance, flame retardancy, explosion protection, pollution-free operation, low losses, light weight, automatic temperature control, and reduced maintenance costs. This product is widely used in urban power supply and distribution systems, high-rise buildings, commercial centers, cultural and sports centers, subways, airports, ports, railway stations, petrochemical enterprises, steel industries, and mining areas.