公开(公告)号：US3651376A

公开(公告)日：1972-03-21

申请号：US3651376D

申请日：1970-08-20

申请人： RUCKER CO

发明人： DOUGLAS ELLWOOD S

IPC分类号： H02H1/00 ,  H02H3/347 ,  H02H3/28

CPC分类号： H02H3/347 ,  H02H1/0053

摘要： Ground fault protective system utilizing a saturable magnetic core for limiting the level of signals produced by fault currents.

摘要翻译： 接地故障保护系统利用可饱和磁芯来限制故障电流产生的信号电平。

公开(公告)号：US3629759A

公开(公告)日：1971-12-21

申请号：US3629759D

申请日：1970-05-20

申请人： RUCKER CO

发明人： DOUGLAS ELLWOOD S ,  WAHLGREN WALLACE W

IPC分类号： H01F38/30 ,  H01H83/14 ,  H02H3/33 ,  H01F15/02

CPC分类号： H01H83/144 ,  H01F38/30 ,  H02H3/33 ,  Y10T137/7781

摘要： Transformer assembly having an electrically conductive casing and spindle member forming a one-turn winding linking a plurality of toroidal cores within the casing.

公开(公告)号：US3665356A

公开(公告)日：1972-05-23

申请号：US3665356D

申请日：1969-04-23

申请人： RUCKER CO

发明人： DOUGLAS ELLWOOD S ,  WAHLGREN WALLACE W

IPC分类号： H01F27/36 ,  H01F38/30 ,  H01F38/38 ,  H01H83/14 ,  H01F17/06

CPC分类号： H01F38/38 ,  H01F27/36 ,  H01F38/30 ,  H01F2038/305 ,  H01H83/144 ,  H01H2083/146

摘要： A differential transformer having a balancing sleeve interposed between its primary and secondary windings to provide a substantially identical degree of coupling between each of the primary windings and the secondary winding. The balancing sleeve is made of magnetic and/or electrically conductive materials.

公开(公告)号：US3614533A

公开(公告)日：1971-10-19

申请号：US3905670

申请日：1970-05-20

申请人： RUCKER CO

发明人： DOUGLAS ELLWOOD S ,  WAHLGREN WALLACE W

IPC分类号： H02H1/04 ,  H02H3/347 ,  H02H3/16

CPC分类号： H02H1/04 ,  H02H3/347

摘要： Miniaturized ground fault detector and current interrupter in which fault signals are stored in the form of magnetic flux in an inductor core. The core has a low input impedance and is driven by a differential transformer having a small core and a singleturn secondary winding. Means is provided for reading the stored flux signals out of the inductor core and operating a circuit breaker in response thereto. Means is also provided for counting the number of signals readout of the core and delaying the operation of the circuit breaker until a predetermined number have been counted.

公开(公告)号：US3611035A

公开(公告)日：1971-10-05

申请号：US3611035D

申请日：1970-06-08

申请人： RUCKER CO

发明人： DOUGLAS ELLWOOD S

IPC分类号： H02H3/17 ,  H02H3/33

CPC分类号： H02H3/331 ,  H02H3/17

摘要： Ground fault protective system and method in which a high frequency tickler voltage is induced on the neutral conductor of a distribution system to indicate inadvertent grounding of that conductor and/or to interrupt the flow of current in the distribution system in response to grounding of the neutral conductor.

公开(公告)号：US3597656A

公开(公告)日：1971-08-03

申请号：US3597656D

申请日：1970-03-16

申请人： RUCKER CO

发明人： DOUGLAS ELLWOOD S

IPC分类号： H02H3/347 ,  H02H3/32 ,  H02H3/28

CPC分类号： H02H3/347

摘要： Ground fault detector and interrupter in which a ground fault signal is modulated onto a carrier signal before it is processed. After processing, the modulated carrier is demodulated, and the fault signal is available for actuating a current interrupter or other monitoring device.