Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 1306
cient for the effective radia-tion of the heat unless the case is made abnormally large.Fig. 593 shows a standard transformer of this type. Water-cooled transformers, Fig. 594, are made in sizesfrom 100 K. V. A. up. Water is circulated through a coilof seamless copper tubing immersed in the oil in… … 9 Fig. 593 allis-chalmers oil-filled self-cooled transformer, 60 cycle,170 k. w., 20,000 to 2,300 volts transformers, as it permits operation at lower temperatures,and allows more margin for overloads. Air-blast transformers are made in sizes from 75 K. V.A. up. Cooling is effected by placing the…
