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

The technical considerations for the difference between dry transformers and oil transformers include insulation type, cooling methods, and environmental impact. Dry transformers use air as the cooling medium, making them suitable for indoor applications with limited space and lower fire risk. In contrast, oil transformers utilize mineral oil for cooling and insulation, allowing for higher power ratings and better thermal performance. However, they require more maintenance and pose environmental risks due to potential oil leaks.