File:The Street railway journal (1908) (14737520966).jpg

Identifier: streetrailwayjo311908newy (find matches)
Title: The Street railway journal
Year: 1884 (1880s)
Authors:
Subjects: Street-railroads Electric railroads Transportation
Publisher: New York : McGraw Pub. Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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tchboard built by the Western Electric Com-pany, of Chicago, consists of seven panels of black Mon-son slate. The high potential circuits are manipu-lated by means of an auxiliary low potential control sys-tem ; no high potential wires are carried to the switchboard.The d.c. feeder, d.c. rotary, a.c. rotary and high tensioncontrol circuits each occupy one panel, .and each of thetwo generators and the e.xciter sets have separate panels. Bare copper wire is used for busbars and in all otherplaces when protected by barriers. Wires not so protectedare heavily insulated. High-tension wires are insulatedwith varnished cambric for 40,000 volts. Arc lamps hung from ornamental wall brackets areused for lighting. There are four lamps in the boiler roomand eight in the engine room. The basement, the rear ofthe boilers and other parts of the building are lighted byincandescent lamps. All light wires are run in pipe conduitliuried in the walls. The regular operating force in the power station con-
Text Appearing After Image:
INTERIOR OF SUBSTATIONsists of four men—an engineer, an oiler and two firemen. LINE AND 0VERHE.\D CONSTRUCTION A single line of 40-ft. cypress poles with 9-in. tops car-ries the telephone, feeder and high-tension wires on twosets of cross-arms and supports the flexible pipe bracketsfrom which the trolley wire is strung. In towns, 60-ft.poles were used to elevate the high-tension wires on thetop cross-arm above trees and other obstructions. Thebutts of poles for 6 ft. from the end, as well as the topsand all cuts and gains for cross-arms, were treated withavenarius carbolineum. The high-tension wires are No. 4 B. & S. gage harddrawn copper. They are carried on three-part porcelain May 23, 1908.) STREET RAILWAY JOURNAL. 855 insulators having malleable iron pins and mounted on cross-arms 10 ft. long. The wires are transposed spirally aboutonce every two miles so as to give two complete turns be-tween substations. An extra cross-arm on two adjoiningpoles is used in making these tran

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