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 228
See No. 4 magnet controller. 2. To accelerate the motor automatically by cutting out the armaturestarting resistance step by step, and also the series field with the laststep of armature resistance (this by means of individual series relaycontrol) giving smooth acceleration under all load… … jam Fig. 4,148.—Diagram of A. B. See traction controller. ELECTRIC ELEVATORS 2,883 4. To bring the elevator quickly, but smoothly, from high to lowspeeds, regardless of load, making accurate stops at landings an easy matter. 5. To open the circuit to the motor should an overload current flow 6. To…
Electrical engineering
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