Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 162
the current has dropped to thevalue for which the solenoid C\ was set. When d closes, the first step of the starting resistance is cutout and the current, which increased considerably when theswitch closed, now passes through d and C2 and the two re-maining steps of the resistance. This current… … Fig. 163.—Automatic starter with series switches. and cuts out the last step of the starting resistance. The con-tact #3 is kept closed by means of the small shunt solenoid s.
Electrical engineering
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