Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 151
duces the current in the holding coil M after the switch A hasbeen closed so that this switch can open the more readily shouldpower go off from the line; this magnetic switch A therefore actsas a no-voltage release. The total current in the machine passes round the overloadcoil B and, when this… … A Motors in Parallel B Motors in Series Fig. 149.—Series-parallel system of motor control. To stop the motor, the contact d is opened; this opens thecontrol circuit and allows the main switch A to open. The contacts b and d can be embodied in the controller insuch a way that the contact b and…
Electrical engineering
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