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Single-phase electric railways



By: Edwin Austin (Author)

Language: English

Genre: Science Nature

Publisher: RareBooksClub.com (6 Mar. 2012)

Format: pdf doc docx mobi djvu epub ibooks (*An electronic version of a printed book that can be read on a computer or handheld device designed specifically for this purpose.)

The original title of the book: Single-phase electric railways

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. 1915 Excerpt: ...sq. mm. This line carries the current, which is used for power purposes, in various industrial works along the railway. The power station at Triibenbach is connected up to this transmission line, and the line is also connected with the two transformer stations, as shown in the diagram, Fig. 180 By means of suitable switching arrangements, therefore, it is possible to maintain the supply under practically all adverse conditions. Most of the high-tension transmission wires are carried on insulators mounted on the masts which support the contact wire for the railway, as shown in Figs. 182 and 183. All the masts are earthed by connecting them to the rails, and also to a buried wire running along the line. The earth connection is made by a galvanised iron wire. This wire is also connected to earth Flg. 184.--Sub-Station Connections. plates. In order to avoid accidents due to the breakage of the 27,000-volt wires, metallic loops which are earthed are fixed to the masts as shown in Figs. 182 and 183, Under ordinary conditions these loops are well away from the high-tension wires, but in the event of the latter breaking, the falling wire makes contact with the loops, and so causes a short circuit. It has only been necessary to use guard nets in a few places. For protecting the high-tension wires against the effects of atmospheric disturbances, lightning arresters are fitted in the power stations and sub-stations. The transformer substations Kirchberg and Ober-Grafendorf are small masonry buildings, and are in the immediate neighbourhood of the railway stations of the same names. A diagram of connections of one of these sub-stations is given in Fig. 184. From this it will be seen that the transformers can either be fed from the single-phase wires A or from one phase...

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