公开(公告)号：US09842709B2

公开(公告)日：2017-12-12

申请号：US14663890

申请日：2015-03-20

申请人： Eaton Corporation

发明人： Gerald Zheng ,  Xin Zhou ,  James Leo Lagree ,  Theodore James Miller ,  Bruce Wu ,  Sui Ouyang

IPC分类号： H01H9/54 ,  H01H37/32 ,  H01H71/12 ,  H01H83/20 ,  H02H3/08 ,  H02H5/04 ,  H02H1/00 ,  H02H1/04 ,  H01H11/00

CPC分类号： H01H9/54 ,  H01H37/32 ,  H01H71/123 ,  H01H71/125 ,  H01H83/20 ,  H01H2011/0068 ,  H02H1/0007 ,  H02H1/046 ,  H02H3/08 ,  H02H5/044

摘要： A circuit breaker includes a set of separable contacts moveable between a closed position and an open position, an operating mechanism configured to open the set of contacts, a conductor coupled to the set of contacts, a current transformer coupled to the conductor, and a trip circuit coupled to the operating mechanism and to the current transformer and configured to cause the operating mechanism to open the set of contacts when a current through the conductor exceeds a current threshold that is greater than a saturation threshold of the current transformer. The trip circuit is further configured to vary the current threshold during an interval following a closure of the set of the contacts and to provide a fixed current threshold thereafter.

公开(公告)号：US20160276115A1

公开(公告)日：2016-09-22

申请号：US14663890

申请日：2015-03-20

申请人： Eaton Corporation

发明人： Gerald Zheng ,  Xin Zhou ,  James Leo Lagree ,  Theodore James Miller ,  Bruce Wu ,  Sui Ouyang

IPC分类号： H01H9/54 ,  H01H37/32

CPC分类号： H01H9/54 ,  H01H37/32 ,  H01H71/123 ,  H01H71/125 ,  H01H83/20 ,  H01H2011/0068 ,  H02H1/0007 ,  H02H1/046 ,  H02H3/08 ,  H02H5/044

摘要： A circuit breaker includes a set of separable contacts moveable between a closed position and an open position, an operating mechanism configured to open the set of contacts, a conductor coupled to the set of contacts, a current transformer coupled to the conductor, and a trip circuit coupled to the operating mechanism and to the current transformer and configured to cause the operating mechanism to open the set of contacts when a current through the conductor exceeds a current threshold that is greater than a saturation threshold of the current transformer. The trip circuit is further configured to vary the current threshold during an interval following a closure of the set of the contacts and to provide a fixed current threshold thereafter.

摘要翻译： 断路器包括一组在可关闭位置和打开位置之间移动的可分离触点，操作机构，其构造成打开所述触点组，连接到所述触点组的导体，耦合到所述导体的电流互感器，以及跳闸 耦合到所述操作机构和所述电流互感器并且被配置为当通过所述导体的电流超过大于所述电流互感器的饱和阈值的电流阈值时，使所述操作机构打开所述触点组。 跳闸电路还被配置为在该组触点闭合之后的间隔期间改变电流阈值，并且此后提供固定的电流阈值。