公开(公告)号：US06577484B1

公开(公告)日：2003-06-10

申请号：US09735139

申请日：2000-12-12

申请人： Bruce F. Macbeth ,  Jeffrey C. Richards ,  Phillip M. Stanley

发明人： Bruce F. Macbeth ,  Jeffrey C. Richards ,  Phillip M. Stanley

IPC分类号： H02H324

CPC分类号： H02H1/0015

摘要： An arc fault detector for detecting arcing faults in an electrical distribution/branch circuit includes both a di/dt detector/amplifier and a 60 Hz (threshold) detector/amplifier connected to a current sensor. The detector includes a circuit which masks inductive/tungsten in-rush current such as is generated by a dimmer switch. The current sensor is a toroidal current transformer, with either two LINE conductors or a LINE and a NEUTRAL conductor passing through the toroid. A multi-winding secondary is formed around the toroidal core whose terminations constitute the output of the current sensor. When the outputs of both detectors simultaneously indicate fault current which is not due to a dimmer switch, a breaker coil is energized which in turn de-energizes the electrical distribution/branch circuit.

摘要翻译： 用于检测配电/分支电路中的电弧故障的电弧故障检测器包括连接到电流传感器的di / dt检测器/放大器和连接到电流传感器的60Hz（阈值）检测器/放大器。 检测器包括一个电路，其掩蔽诸如由调光开关产生的电感/钨涌入电流。 电流传感器是一个环形电流互感器，其中有两根LINE导体或一根LINE线和一根中性导线穿过环形线圈。 围绕环形磁芯形成多绕组次级绕组，其端子构成电流传感器的输出。 当两个检测器的输出同时指示不是由于调光开关引起的故障电流时，断路器线圈被通电，这又使配电/分支电路断电。