公开(公告)号：US06538863B1

公开(公告)日：2003-03-25

申请号：US09990820

申请日：2001-11-16

申请人： Bruce F. Macbeth

发明人： Bruce F. Macbeth

IPC分类号： H02H500

CPC分类号： H02H3/334 ,  H02H1/0015

摘要： A protection device for an electrical circuit includes an asymmetrical transformer for producing a signal in response to an arc fault in the circuit; and an arc fault detector connected to the transformer which receives the signal. The asymmetrical transformer preferably includes a primary winding of the asymmetrical transformer being formed by a hot conductor and a neutral conductor of the electrical circuit. An asymmetry of a symmetrical secondary winding is produced by placing an asymmetrical tap into the symmetrical secondary winding of the transformer. The tap receives an asymmetrical part of common mode core flux to produce the signal, while the symmetrical secondary winding receives full common mode flux but in equal and opposite directions so as not to produce a signal.

摘要翻译： 一种用于电路的保护装置包括用于响应电路中的电弧故障产生信号的非对称变压器; 以及连接到接收信号的变压器的电弧故障检测器。 非对称变压器优选地包括由热导体和电路的中性导体形成的非对称变压器的初级绕组。 对称的次级绕组的不对称性是通过将非对称抽头放置在变压器的对称次级绕组中而产生的。 抽头接收共模芯线通量的不对称部分以产生信号，而对称次级绕组接收完全共模通量，但在相反方向上不产生信号。

公开(公告)号：US06266219B1

公开(公告)日：2001-07-24

申请号：US09089475

申请日：1998-06-02

申请人： Bruce F. Macbeth ,  Thomas N. Packard

发明人： Bruce F. Macbeth ,  Thomas N. Packard

IPC分类号： H02H300

CPC分类号： H02H3/334 ,  H02H1/0015

摘要： A combined ground fault and arc fault circuit interrupter includes a differential current transformer, a hot electrical line and a neutral electrical line passing through the current transformer and forming the primary thereof, an asymmetrical current transformer having a core through which the hot and common electrical leads pass, and a secondary wound on the core for producing a signal more strongly responsive to the current in the common line than in the hot line. An arc fault detector is connected to the secondary of the second transformer, while a ground fault detector is connected to the secondary of the first transformer, and the outputs of the ground fault and arc fault detectors are both connected to a circuit interrupter arranged for disconnecting the circuit when either a ground fault or an arc fault is detected.

摘要翻译： 组合的接地故障和电弧故障电路断路器包括差动电流互感器，热电线和通过电流互感器并形成其主要部分的中性电线，具有芯的不对称电流互感器，热和公共电引线 通过和在芯上的次级伤口，以产生更响应于公共线中的电流比在热线中更强烈的信号。 电弧故障检测器连接到第二变压器的次级，而接地故障检测器连接到第一变压器的次级，并且接地故障和电弧故障检测器的输出都连接到布置用于断开的断路器 检测到接地故障或电弧故障时的电路。