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 1315
ch dis-tinguish the most modern direct-current machines; the 1280 Steam Engineering only material difference being the addition of collectorrings connected to certain points of the armature winding.The number of such connections depends upon the numberof poles and phases. The machine is built for… … Fig. 600 westinghouse rotary converter armature from the collectob side, 300 k. w., 550 volts, three-phase phase converter is provided wth three collecting rings. Asit is usually found expedient to transmit the alternatingcurrent at high pressure, transformers must be employedfor lowering the…
