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 1286
Fig. 5 74 Fig. 574 starting panel for d. c. blower set Fig. 575 main switch panel for a. c. blower set The operation of several sub-stations on a single line isgenerally recognized as good practice. To insure continuity of service in the event of linetrouble, it is expedient to sectionalize the…
