公开(公告)号：US4614851A

公开(公告)日：1986-09-30

申请号：US704111

申请日：1985-02-21

申请人： Peter J. Theisen ,  James J. Rusenko ,  Frank Navratil, Jr.

发明人： Peter J. Theisen ,  James J. Rusenko ,  Frank Navratil, Jr.

IPC分类号： H01H1/20 ,  H01H9/00 ,  H01H9/10 ,  H01H9/56 ,  H01H33/14

CPC分类号： H01H9/0072 ,  H01H1/2016 ,  H01H1/2041 ,  H01H9/10 ,  H01H9/563

摘要： Stationary contacts (12) of a multi-pole disconnect or safety switch are arranged to be engaged by one of a rotatably movable bridging contact (2) before engagement of the other end thereof with a second set of stationary contacts (10). Stationary contacts (12) of adjacent switch poles are positioned on alternate ends for increasing the phase-to-phase failure distance, and one stationary contact (10a) may be arranged to close one or two milliseconds late to produce single phasing for a short time under fault current conditions during which time current limiting fuses (14) begin to open the circuit.

摘要翻译： 多极断开或安全开关的固定触点（12）被布置成在其另一端与第二组静止触点（10）接合之前由可旋转地移动的桥接触头（2）中的一个接合。 相邻开关极的固定触点（12）位于交替端，用于增加相间故障距离，并且一个固定触点（10a）可以被布置为在短时间内关闭一个或两毫秒以产生单相定相 在故障电流条件下，时间限流熔丝（14）开始打开电路。