Invention Grant
- Patent Title: Apparatus and method to detect a series arc fault of an electrical circuit
-
Application No.: US13798704Application Date: 2013-03-13
-
Publication No.: US09638738B2Publication Date: 2017-05-02
- Inventor: John Joseph Shea
- Applicant: EATON CORPORATION
- Applicant Address: US OH Cleveland
- Assignee: EATON CORPORATION
- Current Assignee: EATON CORPORATION
- Current Assignee Address: US OH Cleveland
- Agent Eckert Seamans; Nathaniel Wilks; Grant Coffield
- Main IPC: G01R31/12
- IPC: G01R31/12 ; H02H1/00
Abstract:
An apparatus is for a power circuit providing an alternating current to a load. The apparatus includes a high frequency current sensor structured to cooperate with the power circuit to provide a high frequency current signal. A voltage zero crossing detector is structured to cooperate with the power circuit to provide a voltage zero crossing signal. A high pass filter is structured to provide a filtered current signal from the high frequency current signal. A threshold comparator is structured to provide an output when the filtered current signal exceeds a predetermined value. A processor is structured to receive the voltage zero crossing signal and the output of the threshold comparator and output a trip signal in response to undesired series arcing by detecting an unsymmetrical high frequency signal for a predetermined number of cycles.
Public/Granted literature
- US20130169290A1 APPARATUS AND METHOD TO DETECT A SERIES ARC FAULT OF AN ELECTRICAL CIRCUIT Public/Granted day:2013-07-04
Information query
