A Discussion on recent advances in heavy electrical plant - A review of the development of the vacuum interrupter

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Abstract
The basic physical processes occurring in vacuum arcs are described, and it is shown that reasonable agreement exists between theory and practice as to the interrupting ability to be expected of vacuum interrupters. Designs of interrupters and contacts for both low and high current applications are reviewed, together with the properties of materials required. The advantages and disadvantages of this method of circuit interruption in power systems are discussed, together with the present applications of these interrupters. Finally, an attempt is made to predict the pattern of future development of interrupters and of their applications.
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