Electric transmission of energy and its transformation, subdivision, and distribution. A practical handbook (1894)
Kapp, Gisbert, 1852-1922 · New York, Van Nostrand · leaf 454
OERLIKON. 427 closed by a top and bottom yoke clamped tightly in thetwo halves of the cast-iron case. For three-phase trans-formers a vertical design is adopted, consisting of threecores joined at both ends by annular yokes. The surfaceof small and moderate-sized transformers is sufficient… … increase of size the surface augments only as the squareof the linear dimensions, whereas the bulk and powerwasted grow as the cube of the linear dimensions, a pointis finally reached where even the most efficient type oftransformer cannot be kept cool enough by air circula-tion, and it becomes…
Electric power production
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