Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 345
sformers, therefore, can radiate the heat due to core losses andcopper losses without excessive rise of temperature. A transformer which is twice as large as a given transformerin length, in breadth, and in thickness, has eight times as muchvolume but only four times as much radiating surface as… … Fig. 272. Cieneral Electric Three-Phase Core-Type Transformer—Case Removed 306 ALTERNATING CURRENT MACHINERY 293 order to radiate the heat due to its losses. Large transformersmust, therefore, be provided with special means for cooling. It ismuch cheaper to provide special cooling devices than to…
Electrical engineering
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