File:The street railway review (1891) (14759769732).jpg

Identifier: streetrailwayrev07amer (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

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
e leads to the switchboard are taken down through theengine room floor into the large conduits andup the back of the board to the terminals. The switchboard, which is designed for amaximum out-put of 10,000 amperes, is ofwliite California marble, 2 in. thick. It is39 ft. long by 8 ft. high, and is set 5 ft. fromthe wall midway of the length of the engineroom. There are 29 panels, 2 ft. wide; the14 to the right of the center are connected to the generators and those at the left to thefeeder circuits. The center panel is fitted with Westonilluminated dial ammeter and voltmeter, the latter on aswinging bracket and the former connected in the bus barbetween the generators anil feeders. A Thomson recordingwattmeter and a log desk complete this panel. Each gene-rator panel has mounted on its face a Weston illluminateddial ammeter, a Westinghouse circuit breaker, a shunt fieldrheostat, a cut-in voltmeter plug, a triple-pole main switchand a Siemens & Halske carbon shunt field switch, which
Text Appearing After Image:
(ilsNEKAI. VIHW OK liNfilNH ROOM. 576 ^9l^ect5^aiWay-5\ey^^ opens tlic shunt circuit <,ra(lually ihroui^h apair of carbon points, slowly separatctl liymeans of a worm gear and crank. Thegenerators bein<j of different sizes the scaleson the ammeters are so graduated that a cor-rect distribution of the load is indicated whenthe pointers are all in the same angular posi-tion. Each feeder panel is arranged to supplyfour circuits, each of 400 amperes, and has around dial Weston ammeter, a Westinghousecircuit breaker, and a single-pole switch foreach circuit. The top and ends of the boardare finished with teak molding, and theilluminating lamps set along the top molding.The feeder wires lead from the bottom term-inals of the switches through the floor andalong the conduit underneath to the end ofthe building, thence up and out. Figs. 4 and 7 show views of the switch-board. Fig. 5 is from a photograph of oneof the 1,300-h. p. units and Fig. 6 a generalview of the generating room. Fig.

Note About Images