Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 157
ircuit. Fig. 157shows such a starter used to control a shunt motor i>y means ofresistance in the armature circuit. The switches A, B, C D, E and F are magnetic contactorswitches which close when the electromagnets a, b, c, d, e and/are excited. These magnets are connected across the mainsxy in… … Jr-^l M MasterController Fig. 157.—Magnetic switch controller. F is closed. In the next position of the drum, the contact 2 isclosed and the magnet a is thereby excited which closes theswitch A and connects one terminal of the motor to the line.On contact 3 being closed, the magnet b is excited…
Electrical engineering
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