What does ONAN cooling mean for transformer oil systems?

Tagged: answer, FAQ, oil, question, transformer, transformer oil

This topic has 1 reply, 2 voices, and was last updated 5 months, 1 week ago by Raffaello.

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10.02.2026 at 01:26 #4002

Nicolò
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What does ONAN cooling mean for transformer oil systems?

10.02.2026 at 01:41 #4003

Raffaello
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ONAN stands for Oil Natural Air Natural. It means oil circulates naturally by convection and heat is dissipated to surrounding air through radiators without forced pumps or fans. It is commonly used for small to medium power transformers due to simplicity and reliability.
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