公开(公告)号：US10332698B2

公开(公告)日：2019-06-25

申请号：US15386953

申请日：2016-12-21

Applicant: EATON CORPORATION

Inventor： Xin Zhou ,  Zhi Gao ,  James L. Lagree ,  Robert W. Mueller

IPC: G01R31/327 ,  H01H9/54 ,  H01H1/00 ,  H01H71/04

Abstract: An electronic trip unit for a circuit interrupter includes a line side voltage sensing module for measuring first voltages on a line side of separable contacts, a load side voltage sensing module for measuring second voltages on a load side of the separable contacts, a current sensor, and a main controller. The main controller is further structured and configured to: (i) for each of a plurality of arc interruption events in the circuit interrupter, determine a mass loss due to contact erosion during the arc interruption event based on one or more of the first voltages, the second voltages and the current measured by the current sensor, (ii) determine a total mass loss based on each determined mass loss due to contact erosion, and (iii) monitor a remaining life of the separable contacts based on the determined total mass loss due to contact erosion.

公开(公告)号：US08853576B2

公开(公告)日：2014-10-07

申请号：US13678785

申请日：2012-11-16

Applicant: Eaton Corporation

Inventor： James P. Sisley ,  Paul A. Merck ,  Robert W. Mueller

IPC: H01H9/02 ,  H01H77/00 ,  H01H69/00 ,  H01R13/533 ,  H01H71/08

CPC classification number: H01H77/00 ,  H01H9/0264 ,  H01H69/00 ,  H01H71/08 ,  H01R13/533 ,  Y10T29/49105

Abstract: A circuit breaker terminal lug cover is structured to mechanically secure to a circuit breaker terminal lug and protect the terminal lug from degradation or corrosion. The terminal lug includes a number of terminal lug screws capable of securing a number of cables to the circuit breaker. The terminal lug cover includes a plurality of sides structured to carry heat away from the terminal lug or deflect ionized gases away from the terminal lug. At least one of the sides includes a number of securing members structured to mechanically secure the terminal lug cover to the circuit breaker terminal lug. One of the sides includes an access hole permitting access to the number of terminal lug screws.

Abstract translation: 断路器端子凸耳盖被构造成机械地固定到断路器端子凸耳并且保护端子凸耳免受降级或腐蚀。 端子接线片包括多个能够将多个电缆固定到断路器的端子凸耳螺钉。 端子盖罩包括多个侧面，所述多个侧面构造成将热量远离端子凸耳或将电离的气体偏离端子凸耳。 至少一个侧面包括多个固定构件，其被构造成将端子凸耳盖机械地固定到断路器端子凸耳上。 其中一个侧面包括一个允许进入端子凸耳螺钉数量的通孔。

公开(公告)号：US09472945B2

公开(公告)日：2016-10-18

申请号：US14132678

申请日：2013-12-18

Applicant: EATON CORPORATION

Inventor： Xin Zhou ,  Robert W. Mueller ,  David R. Rohn

IPC: H02H7/22 ,  H02H1/00 ,  H01H9/30 ,  H01H83/20

CPC classification number: H02H3/16 ,  H01H9/30 ,  H01H83/20 ,  H01H2083/201 ,  H02H1/0015 ,  H02H3/021 ,  H02H7/222

Abstract: An electrical switching apparatus includes a transductor circuit that senses a direct current between at least one input terminal and at least one output terminal and outputs an alternating current proportional to the direct current between the input terminal and the output terminal. The electrical switching apparatus also includes a current sensor configured to sense an alternating current component of the direct current. The electrical switching apparatus further includes an alternating current electronic trip circuit including an arc fault detection circuit configured to detect an arc fault based on the sensed alternating current component. The alternating current electronic trip circuit is also configured to control pairs of separable contacts to trip open based on the alternating current output from the transductor circuit or the detected arc fault.

Abstract translation: 一种电气开关装置，包括：感测至少一个输入端子与至少一个输出端子之间的直流电流的输出电路，并输出与输入端子与输出端子之间的直流电流成正比的交流电流。 电气开关装置还包括被配置为感测直流电流的交流分量的电流传感器。 电气开关装置还包括交流电子跳闸电路，其包括电弧故障检测电路，该电弧故障检测电路被配置为基于感测到的交流分量来检测电弧故障。 交流电子跳闸电路还被配置为基于从变压器电路输出的交流电流或检测到的电弧故障来控制成对的可分离触点跳闸断开。

公开(公告)号：US09647446B2

公开(公告)日：2017-05-09

申请号：US15264063

申请日：2016-09-13

Applicant: EATON CORPORATION

Inventor： Xin Zhou ,  Robert W. Mueller ,  David R. Rohn

IPC: H02H3/16 ,  H02H1/00 ,  H01H9/30 ,  H01H83/20

CPC classification number: H02H3/16 ,  H01H9/30 ,  H01H83/20 ,  H01H2083/201 ,  H02H1/0015 ,  H02H3/021 ,  H02H7/222

Abstract: An electrical switching apparatus includes a transductor circuit that senses a direct current between at least one input terminal and at least one output terminal and outputs an alternating current proportional to the direct current between the input terminal and the output terminal. The electrical switching apparatus also includes a current sensor configured to sense an alternating current component of the direct current. The electrical switching apparatus further includes an alternating current electronic trip circuit including an arc fault detection circuit configured to detect an arc fault based on the sensed alternating current component. The alternating current electronic trip circuit is also configured to control pairs of separable contacts to trip open based on the alternating current output from the transductor circuit or the detected arc fault.