40.5kV及以下GIS三工位隔离开关配用的操作机构的设计与开发OA

In this paper a operating mechanism for direct acting three-position disconnector of GIS at 40.5 kV and below is designed and developed,which has solved such problems as inaccurate positioning of the three-position dis-connector,inability to accurately limit the extreme position of the switch's moving contact in case of either electrical signal failure or delay,inability to accurately position during manual operation and interlocking with the circuit breaker.The overall layout of the operating mechanism for the three-position disconnector is introduced firstly.Then,it is inroduced in detail in combination with its function requirement and also from such four aspects as posi-tion positioning,mechanical limit of the extreme position,confirmation of manual operation in place,and interlocking with the circuit breaker.The results show that the mechanism is reliable in operation,coprehensive in fucntion,com-pact in structure and high in safety,and has been widely applied in multiple projects.