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Download PDF, EPUB, MOBI Electric Railways Volume 1; Theoretically and Practically Treated
Download PDF, EPUB, MOBI Electric Railways Volume 1; Theoretically and Practically Treated

Electric Railways Volume 1; Theoretically and Practically Treated.cSydney Whitmore Ashe
Electric Railways Volume 1; Theoretically and Practically Treated
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Author: Sydney Whitmore Ashe
Number of Pages: 50 pages
Published Date: 01 May 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
Format: Pdf
ISBN: 9781231138311
Download Link: Electric Railways Volume 1; Theoretically and Practically Treated
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 Excerpt: ...one being on charge with the lighting circuit, while the other is on the operating circuit. The positive side of the battery is connected to the controller and is carried through the entire train as one of the seven wires of the train line. The negative is connected on each car to the negative side of the magnet valves. This arrangement localizes the current demand from a battery to its own car. The use of a low voltage battery to operate the electromagnetic valves is one of the advantages of the system Fig. 92.--ELEMENTARY DIAGRAM OF CIRCUITS OF UNIT SWITCH CONTROL. obviating the necessity of running high voltage circuits through the train, and making the operation of the control independent of fluctuations of the line voltage. Car Connectors.--The connectors employed to establish the electrical connection between the cars in one train consist essentially of two sockets and a pair of plugs connected by a short cable. The sockets, which are mounted on the end of the motor car, are provided with seven split pins mounted on insulating bases; these pins, being located in the interior of the socket, are effectually protected from injury (Fig. 91). The plugs consist of a cast iron shell surrounded by a piece of insulating material in which are set seven small brass sockets corresponding to the split pins in the main sockets mounted on the car. In designing these sockets and plugs great care has been taken to make them thoroughly substantial, so that they may be able to stand the rough handling to which a piece of apparatus of this kind may be subjected. Circuit-Breaker Trip.--In case of an abnormally great current, due to a short circuit or otherwise, the device known as the Circuit-Breaker Trip operates to open a pair of contacts normally closed, breaking the c...

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