| 摘要 |
PROBLEM TO BE SOLVED: To stably shut off a large direct current, to completely cut off a circuit after shutdown, and to prolong a contact service life of a vacuum bulb. SOLUTION: This direct current high speed vacuum circuit breaker composed by connecting in series, a first serial circuit with a commutation capacitor 1, a thyristor 2 and a commutation reactor 3 is connected in parallel to a second serial circuit with the vacuum bulb 4 and a saturable reactor 6 serially connected, and a capacitor 7 is connected with the saturable reactor 6 in parallel. COPYRIGHT: (C)2006,JPO&NCIPI
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