Power transformer maintenance management method of the present invention, the steps of collecting information for the management of the transformer; calculating an evaluation index for the need for replacement of the transformer from the collected information, and performing replacement evaluation for the transformer; calculating an index for maintenance of the transformer from the collected information; using the indicator for the maintenance of the transformer, configuring an action plan for the transformer; And by using the indicator for the maintenance of the transformer, it may include the step of setting the priority of the action for the transformer.
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