英和和英

出典:『Wikipedia』 (2011/03/08 14:34 UTC 版)

英語による解説

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A dead-end tower (also anchor tower, anchor pylon) uses horizontal strain insulators and occur at the endpoints of conductors. Such endpoints are necessary when interfacing with other modes of power transmission (see image) and, due to the inflexibility of the conductors, when significantly altering the direction of the tower line. Anchor pylons are also employed at branch points as branch pylons and must occur at a maximum interval of 5 km, due to technical limitations on conductor length. Conductors are connected at such pylons by a short conductor cable "strained" between both ends. They often require anchor cables to compensate for the asymmetric attachment of the conductors. Therefore, anchor pylons tend to be more stably built than suspension towers and are often used, particularly in older construction, when the power line must cross a large gap, such as a railway line, river, or valley.