公开(公告)号：US20070159740A1

公开(公告)日：2007-07-12

申请号：US11482251

申请日：2006-07-07

申请人： Thomas Williams ,  Frank Brugner ,  Paul Gandolfi

发明人： Thomas Williams ,  Frank Brugner ,  Paul Gandolfi

IPC分类号： H02H3/00

CPC分类号： H01H83/02 ,  H01H73/44 ,  H02H1/0038 ,  H02H1/0069 ,  H02H3/044 ,  H02H3/16 ,  H02H3/33

摘要： A circuit is disclosed for disconnecting a power source upon the detection of a leakage current comprising a power cable having an insulated first and a second wire. The power cable has a conductive shield surrounding the first and second wires with a drain wire electrically contacting the conductive shield. A disconnect switch is interposed between the power source and the power cable. A primary circuit controls the disconnect switch. A secondary circuit is connected to the drain wire for sensing a leakage current between the conductive shield and one of the first and second wires. An optical switch interconnects the primary circuit and the secondary circuit for opening the disconnect switch upon the secondary circuit sensing a leakage current.

摘要翻译： 公开了一种用于在检测到包括具有绝缘的第一和第二导线的电力电缆的漏电流时断开电源的电路。 电力电缆具有围绕第一和第二导线的导电屏蔽，导线与导电屏蔽电接触。 断电开关插在电源和电源线之间。 主电路控制断开开关。 次级电路连接到漏极线，用于感测导电屏蔽和第一和第二线中的一个之间的漏电流。 光开关将初级电路和次级电路互连，用于在次级电路感测泄漏电流时打开断开开关。