The European-style prefabricated substation is an integrated outdoor power transformation device that combines high-voltage switchgear, dry-type or oil-immersed transformers, low-voltage switchgear, monitoring and control systems, UPS backup power, control transformers, measurement and protection components, and indicating instruments within a high-protection-level enclosure. It has no exposed components, with separate compartments for the high-voltage room, low-voltage room, and transformer room. The transformer uses air-cooling for heat dissipation. It features safety, reliability, high integration, energy efficiency, environmental friendliness, intelligent monitoring and management, and flexible configuration. It is suitable for photovoltaic power generation, wind power generation, and other sites with special environmental requirements for the equipment. Commonly used dry-type transformer capacities for 35kV and below include 1600kVA, 2000kVA, 2500kVA, 3150kVA, 4000kVA, 5500kVA, 6900kVA, and 7400kVA, with a maximum capacity of up to 12500kVA.