What are the technical considerations for cast resin transformer vs oil transformer?

When comparing cast resin transformers to oil transformers, key technical considerations include insulation type, cooling methods, and environmental impact. Cast resin transformers utilize epoxy resin for insulation, offering superior fire resistance and reduced maintenance, while oil transformers use mineral oil for cooling and insulation, providing higher thermal efficiency. Additionally, cast resin transformers are more suitable for indoor applications due to their lower environmental risk, whereas oil transformers require careful management of oil leaks and environmental regulations.