Leakage current detection and interruption circuit

专利名称：Leakage current detection and interruption

circuit with improved shield

发明人：Thomas S. Williams,Frank S. Brugner, JR.,Paul

R. Gandolfi

申请号：US12462883申请日：20090811

公开号：US200903032A1公开日：20091210

专利附图：

摘要：A circuit is disclosed for disconnecting a power source upon the detection of aleakage 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 drainwire electrically contacting the conductive shield. A disconnect switch is interposedbetween the power source and the power cable. A primary circuit controls the disconnectswitch. A secondary circuit is connected to the drain wire for sensing a leakage currentbetween the conductive shield and one of the first and second wires. An optical switchinterconnects the primary circuit and the secondary circuit for opening the disconnectswitch upon the secondary circuit sensing a leakage current.

申请人：Thomas S. Williams,Frank S. Brugner, JR.,Paul R. Gandolfi

地址：Clearwater FL US,Clearwater FL US,Dade City FL US

国籍：US,US,US

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