Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 248
esistance isof the cast grid type and is cut outin equal steps in each phase of therotor winding, thereby keeping thephases in balance at all times. The rheostat and the main line switch are so inter-locked that it is impossible to make a quick reversal with the starting resistance cut out.A… … ELECTRIC ELEVATORS 2,903 connected to the resistance (all connections being made at the backof the board) are arranged to perform the following functions: 1. To disconnect the primary wires from the motor and brake solenoidin the off position of the controller. 2. To accelerate the motor…
Electrical engineering
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