There are four dominate classes of transformer cooling:
Class Definition
1. ONAN Oil Natural - Air Natural
2. ONAF Oil Natural - Air Force
3. OFAF Oil Force - Air Force
4. OFOD Oil Force - Oil Directed
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There are four dominate classes of transformer cooling:
Class Definition
1. ONAN Oil Natural - Air Natural
2. ONAF Oil Natural - Air Force
3. OFAF Oil Force - Air Force
4. OFOD Oil Force - Oil Directed