| 摘要 |
A high-voltage circuit breaker comprising a plurality of separate interrupter units connected in series, each unit comprising a set of main contacts, the series combination of a resistor and resistor switch in parallel with the main contacts, and an actuator for operating the main contacts. The actuator of one of these units operates the resistor switch of this particular unit and is mechanically linked with the resistor switches of all the other units so that the contacts of the other resistor switches are closed by the closing action of this one actuator. The resistor switches are opened in synchronism, each one by the actuator of its unit during contacts-opening action. During a circuit interruption, all the main contacts open simultaneously, placing all the resistors in series in the line; a few milliseconds later all the resistor switches open simultaneously to complete the opening cycle. During closing, the main contacts of the one unit close first, after which all the resistor switches close simultaneously, placing the resistors of the other units in series in the line; a few milliseconds later the main contacts of the other units close simultaneously to complete the closing cycle.
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