Apparatus and method for cooling power transformers

Details Apparatus and method for cooling power transformers Apparatus and method for cooling power transformers

H - Electricity

01

F

H01F 27/12 (2006.01)

Patent

CA 2707961

The cooling system for a power transformer is activated by sensing and processing the frequency characteristic including the harmonic contents, of the inrush current into the transformer, when the transformer is first energized. The cooling system may include motors operating devices such as oil circulating pumps and fans causing a coolant to flow about the power transformer. The cooling system is deactivated by sensing when the transformer is de-energized and when its temperature is below a predetermined level.

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