What are the technical considerations for difference between oil transformer and dry transformer?

The technical considerations for the difference between oil transformers and dry transformers include insulation type, cooling methods, and environmental impact. Oil transformers use mineral oil for insulation and cooling, offering better heat dissipation and higher capacity. However, they require more maintenance and pose environmental risks. Dry transformers utilize air for cooling and solid insulation, making them safer and more environmentally friendly, but they typically have lower capacity and may require larger physical space for adequate cooling.