File:American engineer and railroad journal (1893) (14759368065).jpg

Identifier: americanengineer80newy (find matches)
Title: American engineer and railroad journal
Year: 1893 (1890s)
Authors:
Subjects: Railroad engineering Engineering Railroads Railroad cars
Publisher: New York : M.N. Forney
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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presenttime Long Island Railroad trains are being operated electric-ally from Flatbush Avenue, Brooklyn, to Belmont Park;from Flatbush Avenue to Rockaway Park, and from FlatbushAvenue to Jamaica via Hammel and Valley Stream. Othersections of the line will be electrified as the traffic or otherconditions make it desirable and it is expected that eventuallythe whole suburban section of the Long Island Railroad willbe operated by electricity exclusively. In the present article we will briefly consider the methodsused in transferring the current from the Long Island Citypower house to the trains. The current leaves the power house as three phase alternat-ing at a pressure of 12,000 volts. The present line consistsof five circuits of three conductors each leaving the powerhouse, which are carried underground through an 18 ductconduit line to Dutchkills Street, a distance of 1.12 miles,at which point they come to the surface and connect to light- 29(1 AMERICAN ENGINEER AND RAILROAD JOURNAL
Text Appearing After Image:
NOTES.All Circuits 3 PhaseOnly One Leg Shown-= Knife Switch= Oil Circuit Breaker 5 = Rotary Starting Circuit 6 S= Booster & Rot. Start. Cir.P = Portable S.S. Circuit A = Auxiliary Circuit R = Rotary Converter Circuii KcUrj Bu ptpm GENERAL DIAGRAM OF ELECTRIC CIRCUITS—LONG ISLAND R. R. iug arrestors placed in a small building of fire proof con-struction. From this they are carried overhead on steel polesto Woodhaven Junction, a distance of 7.S5 miles, where islocated the largest and main sub-station, from which thecurrent is distributed to the other sub-stations. The conductors carrying the current consist of three cableshaving a cross section of 250,000 cm., each being composedof 37 copper wires; the insulation has, of course, been givenvery careful attention and is suited to the conditions aris-ing from the location of the circuit. Each length of cable wastested with a pressure of 30,000 volts after it was in place. The overhead line between Dutchkill Street and WoodhavenJuncti

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