File:The street railway review (1891) (14758053901).jpg

Identifier: streetrailwayrev15amer (find matches)
Title: The street railway review
Year: 1891 (1890s)
Authors: American Street Railway Association Street Railway Accountants' Association of America American Railway, Mechanical, and Electrical Association
Subjects: Street-railroads
Publisher: Chicago : Street Railway Review Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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Cf^jres •IfX GENERAL DL\GRAM OF CAR CONNECTIONS. Mafi. 15, T(/)5.) STREET RAILWAY REVIEW. 153 i_-i/o-—* fr- 4 .■■ T i Tfr-l::--^l!.g!
Text Appearing After Image:
154 STREET RAILWAY REVIEW. rVoL. XV, No. 3. The mnin auto-transformer is of the shell form, air-cooled type.Before shipment it was subjected to a test of 10,000 volts betweenwinding and iron, and was operated at double potential for 10 min-ntes. It is designed for operation at 25 cycles, a frequency whichhas been adopted as standard for single-phase railway service. Outside of cities there is used a peculiar form of bow trolleydesigned for high potential alternating current circuits. The trolleyIS mounted upon a thoroughly insulated platform, and is raised, low-ered and controlled by the motorman by means of compressed air.There is therefore no danger at any time of contact with live partsof the trolley. The bow carries a large, flat aluminnm shoe, whichmakes contact with the under side of the trolley wire. For low potential service, whether alternating or direct current,a modification of the Union standard trolley is provided, as thebow type could not be used in the city of Indianapo

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