International Library of Technology · Scranton, International Textbook Co. · leaf 71
s and serves as a conducting medium for carrying theheat from the coils and core to the case, where it is radiatedto the surrounding air. Very often, when the transformersare large, they are unable to get rid of the heat by radiationalone, without becoming so hot that there is danger of dama-ging… … FIG. 19. circulated through it by means of fans or by immersing thetransformer in oil, which is kept cool by water circulatingin coiled pipes. As stated above, these precautions are onlynecessary in the case of large transformers, such as thoseused in substations. Transformers of ordinary size,…
Electrical engineering
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