Cooling Power Transformers by Forced Circulation of Cooling Medium

The paper discusses the various methods that have been used in cooling power transformers by forced circulation of the cooling medium, and points out the benefits 1. To the war effort in the saving of critical materials. 2. To the user in first cost, shipment, installation, station layout, and mobility. The selection of proper control equipment is analyzed from the standpoint of protection and reliability of forced cooling. The relation between hot-spot and average winding temperatures and the future for forced cooling after the war is discussed.