Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 359
urrent / and the braking torque temporarily,and the speed increases until the greater e.m.f. generated in the Solenoid Weight[(W/ L 1 _aCs \ 334 PRINCIPLES OF ELECTRICAL ENGINEERING [Chap, xl armature is again able to send the necessary current I throughthe higher resistance. By varying the… … w w Fig. 396.—Hoisting periodFigs. 396 and 397. Fig. 397.—Lowering period, withdynamic braking.Connections of a compound-wound direct-currenthoist motor. Dynamic braking is also applied to crane motors. Duringhoisting, the motor is connected as shown in Fig. 398 On the firststep of the controller…
Electrical engineering
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