| 摘要 |
PURPOSE:To provide a high-speed reclosing grounding device capable of interruption induced current surely in a phase of a preceding one-line ground fault occurring, even if a following ground fault happens in another phase after the occurrence of the ground fault, and it happens in the middle of the opening of the grounding device for the phase of the preceding ground fault. CONSTITUTION:A second opening contact 2 is electrically connected in series to a main contact 1. And a second main contact 3 to be directly connected to a grounding circuit, a commutating contact part 4 for commutating a contact- to-contact arc generated between contacts at the time of opening operation, and a resistor 6 to be connected to this commutating contact part 4 are arranged in the second opening contact 2. The second opening contact 2 is so constituted that it opens at the timing of the opening of the main contact 1. |
