What is the difference between oil-filled and dry-type transformers?

Question

Accepted Answer

Oil transformers use oil as a cooling and insulating medium, while dry type transformers use air or solid insulation materials.

Oil transformers use oil as a cooling and insulating medium, while dry type transformers use air or solid insulation materials.
Oil transformers are typically used in high-power applications due to better heat dissipation capabilities.
Dry type transformers are more environmentally friendly as they do not contain oil, reducing the risk of oil leaks or spills.
Oil transformers require regular maintenance to check and replace the oil, while dry type transformers are maintenance-free in terms of oil checks.
Dry type transformers are often preferred in indoor or sensitive environments where oil leaks could be a concern.

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