| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a gas insulated switchgear capable of providing a stable contact resistance value with a simple configuration. <P>SOLUTION: The gas insulated switchgear comprises a pair of grounding switches stored/arranged in an insulating support tube which insulates/supports a charging part provided at both ends of a breaker. Each grounding switch comprises a fixed contact formed of the charge part of the breaker, a ground conductor which is berried in a contact bushing provided to face the fixed contact and has a central part provided with a sliding hole that extends in the direction away from the fixed contact, a movable contact whose one end has a globular sliding contact part that engages with the sliding hole of the ground conductor for sliding and whose the other end has a globular contact part which can contact the fixed contact while the sliding contact part is kept to engage with the sliding hole, and a pressure relay means for the movable contact part to stabilize a contact pressure against the fixed contact in the fed state after the grounding switch is operated. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
