公开(公告)号：US20160380422A1

公开(公告)日：2016-12-29

申请号：US15261297

申请日：2016-09-09

Applicant: EATON CORPORATION

Inventor： XIN XHOU ,  THEODORE J. MILLER ,  HARRY J. CARLINO

IPC: H02H1/00 ,  H02H3/16 ,  H02H3/02

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 an input terminal and an output terminal and outputs an alternating current proportional to the direct current. 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. The electrical switching apparatus also includes a power supply structured to provide direct current power to the alternating current electronic trip circuit.