DEVICE FOR REDUCING ELECTRIC FIELD IN A GAP OF POLES OF GAS INSULATED SWITCHGEAR

摘要

PURPOSE: A gap of poles electric field mitigation apparatus of a gas insulation switch is provided to prevent the decrease of pressure of an arc-extinguishing gas by preventing an arc from penetrating into the moving path of gas. CONSTITUTION: One end of a fixed arc contactor(110) is fixed inside a fixed main contactor(100). The other end part of the fixed arc contactor is projected to the outside of the fixed main contactor. A cylinder(125) is inserted to the inside of the fixed main contactor to be slide. A shield(180) moves along the moving direction of a cylinder inside the fixed main contactor. The shield prevents the field concentration due to the arc in the end part of the fixed main contactor and the fixed arc contactor.