Dynamos and motors; a text book for colleges and technical schools (1911)
Franklin, William S. (William Suddards), 1863-1930, Esty, William, 1868-1928 · New York The Macmillan company · leaf 404
what is called a (/Is-cJiargc resistance to pi event excessive sparking and possible dam-age to the insulation of the field windings when the field circuitis opened. This discharge resistance is a moderately high re- SWITCHBOARDS AND SWITCHBOARD APPLIANCES. 395 sistance which is connected across… … ing of the switch. A rheostat is shown in the field circuit of thegenerator and another rheostat is shown in the field circuit of theexciter in Fig. 285. The armature terminals of the three-phase 396 DYNAMOS AND MOTORS. generator in Fig. 285 are connected through the three ammetersand through a…
Dynamos · Electric motors
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