Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 152
Fig. 150.—Street railway controller. During the first half of the starting period, the motors are con-nected in series, as shown in diagram B, so that the total linecurrent passes through both machines; when the starting re-sistance is all cut out, each motor has half of the normal voltage … Series connection 0s c Complete diagram of connections Parallel connec-tionFig. 151.—Diagram of connections of a street railway controller. applied across its terminals and runs at half speed. To obtainhigher speeds, the motors are now connected in parallel and theresistance is again inserted in…
Electrical engineering
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