| 摘要 |
<p>PURPOSE:To provide a gas insulation switchgear which can suppress a rise in container potential, can prevent the damage of the secondary winding of an armor type current transformer, and is excellent in safety by shortening an earthing conductor. CONSTITUTION:A bus 34 provided with a receiving section 1 and armor type current transformer 2 is electrically connected in series with a grounding switch 4. Between the container of the bus 3 and a grounding switch container 8 and between the container 8 and the lead-out section of the main circuit grounding section 7 of the switch 4 are respectively insulated from each other. A connecting terminal 10 is provided to the container of the bus 3 on the switch 4 side from the transformer 2 and the terminal 10 is connected to the lead-out section of the section 7 with an earthing conductor 12. The part of the container of the bus 3 on the receiving section 1 side from the transformer 2 is grounded with an earthing conductor 11. The earth current flows through the section 7, conductor 12, terminal 10, container of the bus 3, and conductor 11 in this order.</p> |
