Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 506
rst contactposi-tion, or through a contact made by the automatic, so that once opened itcannot be operated unless the controller is in a safe position for themotors. The cylinder of the main controller is driven with an intermittent motionby a pilot motor through a powerful locked spring, so that… … ft G Fuses a! i r~7u<n ; .-s?<Ki: ■ a a e!3^—-;M~* Coils CliD3 on Reve ^.iszsxisj |1400 |l000 Pilot So Brake* | 70 ohms.fo | Grouud J FlG. 47. Schematic Diagram, Control Circuits Only, Without Coast Relay. The pilot motor is governed by either four or five relays called, respec-tively, the…
Electrical engineering
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