公开(公告)号：US3947650A

公开(公告)日：1976-03-30

申请号：US432064

申请日：1974-01-09

申请人： Robert Allen Strain ,  Gary Lee Schurter

发明人： Robert Allen Strain ,  Gary Lee Schurter

IPC分类号： H01H33/53 ,  H01H33/60 ,  H01H33/91 ,  H01H33/915 ,  H02B7/08 ,  H02B13/035 ,  H01H33/88

CPC分类号： H02B13/035 ,  H01H33/91 ,  H02B7/08

摘要： An electric switch suitable for use in underground distribution (UD) systems includes a conductive housing having at least one pair of insulated feed-through bushings mounted thereon. The bushings are adapted to receive underground conductor terminations external of the housing and electrodes of a circuit interrupter internal of the housing. The circuit interrupter is responsive to a mechanism which alternately engages and disengages the electrodes. The housing encloses a volume of electronegative gas which gas acts to extinguish the arc drawn between the electrodes during a switching operation, and to provide electrical insulation between the individual electrodes and between the electrodes and the conductive housing. The gas is maintained at a sufficiently low pressure to prevent liquefication even at low-ambient temperatures.

摘要翻译： 适用于地下分配（UD）系统的电开关包括具有安装在其上的至少一对绝缘馈通衬套的导电外壳。 衬套适于接收壳体外部的地下导体端子和壳体内部的断路器的电极。 电路断路器响应于交替地接合和分离电极的机构。 壳体包围一定量的电负性气体，气体用于在开关操作期间熄灭在电极之间拉出的电弧，并且在各个电极之间以及在电极和导电壳体之间提供电绝缘。 气体保持在足够低的压力下，即使在低环境温度下也能防止液化。