File:The Street railway journal (1902) (14738396716).jpg

Identifier: streetrailwayjo201902newy (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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ere are two telephone circuits, one for general businessand the other for despatching. The telephone lines are-transposed every fourth pole, and the high-tension linesevery mile, both being transposed more frequently than is map. Three high-tension feeder lines leave (he powerhouse. From the power house to Batavia a line runs directacross country to sub-station No. 1, near Aurora. An-other high-tension pole line follows the line of the railroad,supplying sub-stations Nos. 2, 3 and 4, and extending toMaywood. The third line from the lower power house isbuilt directly across country to sub-station No. 5 on theElgin branch, and along the right of way from this sub-sta-tion to Wheaton, at which point it joins the pole line fromthe Aurora branch, and the two three-phase circuits run on(he same poles to sub-station No. 3, with one circuit fromthere to No. 4. Sub-station No. 6 is supplied by a single-line running from sub-station No. 5. Another respect in which this transmission differs from
Text Appearing After Image:
VIEW SHOWING ARRANGEMENT OF THIRD RAIL AT CROSS OVER common. The telephone wires are transposed by tieingboth to a single wide petticoat transportation insulatorevery fourth pole. No direct-current overhead feeders are needed, as thethird rail has sufficient carrying capacity to conduct all thecurrent from the suh-stations to the trains. The overheadpole line, therefore, has only to carry the 2f),ooo-volt three-phase high-tension feeders which supply the various sub-stations and two telephone circuits. The high-tensionfeeders are of standard aluminum cable equivalent to No.000 copper wire. The poles carrying these lines are 40 ft.long placed 80 ft. apart, sixty-six to the mile. Tn townsthe poles are 60 ft. long. 1 he system of high-tension dis-tribution is very complete, and is arranged to secure free-dom from interruptions of service due to short circuits orbreakages on any one transmission line. The high-tensionlines are indicated by dotted lines on the accompanying the majority is

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