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 1311
Fig. 596 CORE AND COILS, 500 K. W., 20,000 TO 375 VOLT TRANSFORMERS r 1276 Steam Engineering wound with double cotton covered strip copper, one turnper layer, with fullerboard insulation, in addition to thecotton covering, between turns. Exceptions to this con- … Fig. 597struction are made only when the size of the conductor issuch as to render the use of copper strip impracticable, andin such cases the coils are wound with round, double-cotton fi£tt« Transformers 1277 covered wire with few turns per layer, so that the voltagebetween the layers is kept…
