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Summary
Identifier: cyclopediaofappl05amer (find matches)
Title: Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc.
Year: 1916 (1910s)
Authors: American Technical Society
Subjects: Electric engineering
Publisher: Chicago : American Technical Society
Contributing Library: Northeastern University, Snell Library
Digitizing Sponsor: Northeastern University, Snell Library
Text Appearing Before Image:
s. From the substation, current flows to the cars either throughoverhead trolley wires, or through third-rail, mounted on the track. Fig. 171 should be studied carefully as it represents a lay-outof power house, substations, and transmission system which wasstrictly up-to-date when it w^as installed a few years ago. Thepower house is at Anderson, Indiana, and from it the transmissionlines radiate in several directions. The three-phase transmissioncircuits are indicated by light solid lines and the substations bysmall rectangles. The low-tension feeders are indicated by heavysolid lines and the trolley wire by light dot-and-dash lines. Thesizes of the various wires and the distances involved are all plainlymarked on the figure. The overhead construction may be of the usual type with thetrolley wire suspended from span wires or brackets, or it may be ofthe catenary type, as in Fig. 199. In this a steel messenger wirehangs from insulators in the form of a catenary curve—the natural 288
Text Appearing After Image:
289 192 ELECTRIC RAILWAYS curve for a flexible cable suspended between two points. Attachedto the messenger by hangers at frequent intervals is the trolley LOGANSPORT High Tension -Z?„ C. Feeder-Trolley Nobles- VILLe IFa/rmount