| 摘要 |
<p>PURPOSE:To improve reliability on countermeasure against gas leakage while decreasing height of a gas insulation switchgear by arranging grounding cables of three-phase system respectively under a breaker and a current transformer while connecting the respective grounding devices with an operating means through a single operating shaft. CONSTITUTION:Power bus bars 41 of three-phase amount are mount-supported, with their upper and lower ends to a cover 9 through insulators 58, 59, and to a mounting plate 60 for closing the lower of a breaking tank 14. One grounding device 7a of three-phase system is arranged along one straight line in the lower of a breaker 2. While the other grounding devices 7b of three-phase system is arranged along the other straight line in the lower of a current transformer 3 and in a position higher than the grounding device 7a. Since the grounding devices 7a, 7b of three-phase system are arranged below the breaker 2 and the current transformer 3 in this way, the power bus bars 41 can be more vertically extended than conventional one.</p> |
