File:Railway master mechanic (microform) (1895) (14761372592).jpg

Identifier: railwaymastermec33newy (find matches)
Title: Railway master mechanic (microform)
Year: 1895 (1890s)
Authors:
Subjects: Railroads Railroads
Publisher: New York : (Simmons-Boardman Pub. Corp.)
Contributing Library: MIT Libraries
Digitizing Sponsor: Boston Library Consortium Member Libraries

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Text Appearing Before Image:
rans-formers connected in delta. A three phase, 2300-110 volttransformer provides for the incandescent lights. From the transformers the low tension wires are carriedoverhead to the distributing panels, located in the tool room,on which switches are mounted for controlling the lightingand power circuits throughout the buildings. On thi-. panelthere are also located a voltmeter and an ammeter, togetherwith multiple point voltmeter and ammeter switches soconnected that voltage and current readings may be madeat will on any individual power or lighting circuit. Allis-Chalmers three phase induction motors are usedthroughout, nine motors being installed at present, withan aggregate horse power of 325. Each of these motors iscapable of carrying 25% overload for one hour and 50%overload momentarily. They are each controlled by a start-ing compensator, and are protected when starting by fuses,and when running, by both fuses and automatic circuitbreakers provided with no voltage release coils.
Text Appearing After Image:
Machine Bay of Erecting Shop One No. 50 (36 in.) Fay & Egan band saw.One No. 4 (18 in.) Fay & Egan wood lathe.One 48x6 in. Pond grindstone.One No. 6A Fox bench wood trimmer. Power and Lighting System.Electric power is. purchased from the Great SouthernLumber Co., whose plant is located about one-half mile dis-tant. The current is brought to the shops over a 2300-volt,three-phase, transmission line, consisting of three No. 4 barecopper wires carried on wood pins and crossarms on 7 in.top 40 ft. yellow pine poles. The primary circuit at thereceiving substation is provided with lightning arresters, hookswitches and choke coils, and is controlled by two separateautomatic, overload release, oil switches (one for powerand one for light) mounted on a slate panel. This panelis further equipped with integrating and indicating watt-meters; ammeters for each phase; voltmeter and power fac-tor meter. The portion of power used by the motors and There are 28 Western Electric, 460 volt, arc

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