| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce an electric field stress value of the part positioned on a triple junction part between main inserts, by burying dummy inserts for electric field mitigation at roughly even intervals between the main inserts buried side by side along the circumference. SOLUTION: Main inserts 15 to the prescribed number are buried at roughly even intervals on the circumference of a pitch circle withϕD of this gas insulation switchgear, and one or two dummy inserts 17 are buried between the main inserts 15 buried side by side. The dummy inserts 17 are used only for the purpose of electric field mitigation between the main inserts 15. A storing hole is formed in the dummy insert 17, and a spring as an energizing means is stored in the storing hole. A contact resistance is reduced by a function of the spring, and the dummy insert 17 always keeps the same electric potential as a fixed part, and can reduce an electric field stress value of the part positioned on a triple junction part between the main inserts 15.</p> |
