Report of the Electric Railway Test Commission to the president of the Louisiana Purchase Exposition (1906) (14778534743)

Identifier: reportofelectric02loui (find matches)

Title: Report of the Electric Railway Test Commission to the president of the Louisiana Purchase Exposition

Year: 1906 (1900s)

Authors: Louisiana Purchase Exposition (1904 : Saint Louis, Mo.). Electric Railway Test Commission Norris, Henry Hutchinson, 1873-1940, ed Swenson, Bernard Victor, 1872- ed

Subjects: Electric railroads

Publisher: New York, McGraw

Contributing Library: The Library of Congress

Digitizing Sponsor: The Library of Congress

Text Appearing Before Image:

ires andthe four tracks were short-circuited directly by means of a No.0000 B. & S. gage cable connecting the cross-bond between thetracks to the trolley wires. Series B. — In these tests, the pressure drop and power losson the double track alone were investigated. The connectionswere the same as those in Fig. 137, except that the pressure 440 ELECTRIC RAILWAY TEST COMMISSION across the voltmeter and the pressure coil of the wattmeter wasthe pressure drop of the track alone, instead of that of the trackand trolley wire combined, which was the condition in Series A.This connection was made by means of a No. 12 5. & aS. gagecopper pressure wire, which was connected to the track at thewest end of the section under test. This pressure lead was 930ft. long, and was 3 ft. above the ground. Series C. — These tests comprised those on the single trackand trolley combined. The connections were the same as thosein Fig. 137, except that one trolley wire was disconnected and 00 Trolley

Text Appearing After Image:

m)=^ Shunt Fig. 137. — Connections Used in Making tfie Alternating Current Tests with Double Trackand Double Trolley. one track was isolated by cutting the cross-bonds between thetwo tracks. The tests were made on the north or upper trackof the two. This track was selected because there were no steelcross-ties used in its construction, as was the case in the southtest track. Series D. — This series of tests comprised those showing thepressure drop and power losses existing in the single track alone.The connections were the same as in Series B, except that thesouth track and trolley wire were disconnected as in Series C. Series E. — These tests comprised those showing the pres-sure drop and power losses occurring in the single trolley with ALTERNATING CURRENT LOSSES IN TRACK 441 a single rail return. One trolley wire was disconnected, andthree of the four rails were isolated by disconnecting the cross-bonding. The south rail of the north track was selected forthese tests. One ter

report of the electric railway test commission to the president of the louisiana purchase exposition 1906 book illustrations electric railroads images from internet archive library of congress

1906

Library of Congress

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