Handbook of mechanical and electrical cost data, giving shipping weights, capacities, outputs, and net prices of machines and apparatus, and detailed costs of installation, maintenance, depreciation and operation, together with many principles and data relating to engineering economics (1918)
Gillette, Halbert Powers, 1869-, Dana, Richard Turner, 1876-1928, joint author · New York, McGraw-Hill · leaf 825
d been carried. The averages of test resultscan therefore be used only as a guide for transformers of the classtested, as the losses of each individual transformer are liable tochange. For estimating purposes, however, the curves will befound fiiirly accurate. It may be pointed out that for the… … 4 6 & 10 12 14 16 15f^a+ing of TransforTTiers in KVA.Fig. 7 loss to iron loss gradually increased from 1 :1 to about 2 :1, thuspermitting a higher all-day elliciency when the load factor is low.Figs. 7 and 8 compare the iron and copper losses of modern trans-formers with those of older types in…
