Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1301
Fig. 593 ALUS-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… … Fig. 594 allis-chalmers oil-filled water-cooled transformeb, 25 cycle, 500 K. w., 20,000 TO 375 volts Transformers 1273 an air chamber in which a pressure of air is maintainedby motor driven fans; currents of air passing up around thetransformer carry off the heat. In this type oil cannot beused…
