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 1317
am Engineering easily removable field coils. If the windings are compound,the series, and shunt coils are insulated separately. Thearmature is of the slotted drum type, with either a two cir-cuit, or multiple type of winding. The number of poles ina rotary converter is dependent upon the speed of… … Fig. 601 WESTINGHOUSE COMPLETE ROTARY CONVERTER ARMATURE FROM THECOMMUTATOR SIDE, 300 K. W., 550 VOLTS, THREE-PHASE ture speed is limited by the maximum safe speed of theperiphery of armature and commutator. With a givenspeed, however, the number of poles is proportional to thefrequency, and with a…
