Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 417
Fig. 193. Allis-Chalmers Oil-Filled Self-Cooled Transformer, 60 Cycle,170 K. W., 20,000 to 2,300 Volts. Self-cooled transformers are built in sizes up to 250 K.V. A. (kilovolt-amperes). Above this size the externalsurface of the case is not sufficient for the effective radia- 41S ELEMENTARY… … Fig. 194. Allis-Chalmers Oil-Filled Water-Cooled Transformer,Cycle, 500 K. W., 20,000 to 375 Volts. 25 TRANSFORMERS 419 tion of the heat unless the case is made abnormally large.Fig. 193 shows a standard transformer of this type. Water-cooled transformers, Fig. 194, are made in sizesfrom 100 K. V.…
Electricity
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