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 1305
Fig. 596 GORE AND COILS, 500 K. W.. 20,000 TO 875 VOLT TRANSFORMERS 1276 Steam Engineering woTind with double cotton covered strip copper^ one turnper layer^ with fuUerboard insulation^ in addition to thecotton covering, between turns. Exceptions to this con- … FiG. 597 struction 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 Transformers 1277 covered wire with few turns per layer, so that the voltagebetween the layers is kept within…
