| 摘要 |
Discloses a high voltage circuit breaker that comprises a main circuit interrupter of the vacuum-type, a voltage-controlling resistor shunting the main interrupter, and an auxiliary interrupter connected in series with parallel combination of the main interrupter and the resistor. During fault-current interruptions the main interrupter is opened first and the auxiliary interrupter thereafter. During capacitance-current interruptions the auxiliary interrupter is opened first and the main interrupter thereafter. The latter sequence enables the auxiliary interrupter to assume the capacitance-current interrupting duty and to relieve the main vacuum-type interrupter therefrom.
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