The abnormal temperature rise of a large oil-immersed self-cooling transformer in operation is analyzed. The problems and optimization program in its cooling system design are presented.

对运行中的大容量油浸自冷变压器异常温升情况进行了分析，提出了其冷却系统设计存在的问题及优化方案。

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The transformer is available AS a self-cooled unit, or it can be purchASed with additional steps of forced cooling that use fan or fans and oil pumps.

可选用自冷式变压器，也可购买带有风扇或风扇加上油泵这种强迫冷却措施的变压器。

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