Recent technical developments in high-voltage and high-power vacuumcircuit breakers |
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Authors: | Yanabu S Tsutsumi T Yokokura K Kaneko E |
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Institution: | Toshiba Corp., Kawasaki; |
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Abstract: | Explanations are given regarding recent technical topics in the development of vacuum circuit breakers. The area-effect concept is introduced to aid in insulation designs of vacuum interrupters. By using Cu-Cr prepared through a special method, the voltage performance of vacuum interrupters has been remarkably improved. Through the development of axial magnetic field electrodes, large-current interruption has been made possible. The design concept for determining contact radii has been established. A computer simulation method for generating switching overvoltage is described, thereby indicating the possibility of realizing large-current interrupting vacuum interrupters with low switching overvoltages |
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