Specific power transformer types are defined by their application, construction, and ratings. Examples include distribution transformers, generator step-up transformers, autotransformers, three-winding transformers, traction transformers, and phase-shifting transformers. Each type has distinct vector groups, cooling classes, insulation levels, and mechanical designs tailored to its role, such as bulk transmission, local distribution, renewable integration, or railway electrification. Standards and naming conventions encode these characteristics for proper specification and interoperability.