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 1309
not burn in open air un-less its temperature is first raised to about 400° P. Infact, the chief danger of fire is not that the oil may beignited by any defect or arc within the transformer, butthat a fire in the building in which the transformers areinstalled may so heat the oil as to cause it to… … Fig. 595 PARTLY ASSEMBLED 25 CYCLE, 500 K. W., 20,000 TO 375 VOLTTRANSFORMER Transformers 1275
