Oil-transformer and dry-transformer
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Compared to dry-type transformers, which type of transformer is used more in current power systems and petrochemical distribution systems: oil-immersed transformers or dry-type transformers? What is the maximum capacity of a dry-type transformer?
Oil-immersed transformers and dry-type transformers: In current power systems, oil-immersed transformers are more commonly used in substations, while dry-type transformers are less common. This is because oil-immersed transformers require larger capacity, as well as higher standards for insulation and heat dissipation. For distribution transformers, either type can be chosen; dry-type transformers are more expensive but offer better fire resistance, whereas oil-immersed transformers are relatively cheaper.