Invention Grant
- Patent Title: Sensing a high frequency arc noise in an arc fault detection circuit interruption (AFCI) device
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Application No.: US16828270Application Date: 2020-03-24
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Publication No.: US11239648B2Publication Date: 2022-02-01
- Inventor: Hugh T. Kinsel
- Applicant: Siemens Industry, Inc.
- Applicant Address: US GA Alpharetta
- Assignee: Siemens Industry, Inc.
- Current Assignee: Siemens Industry, Inc.
- Current Assignee Address: US GA Alpharetta
- Main IPC: H02H3/08
- IPC: H02H3/08 ; H01C7/108 ; H02H1/00

Abstract:
An arc fault detection circuit interruption (AFCI) device includes a high frequency arc noise sensor and an arc fault detection circuit for sensing a high frequency arc noise. The high frequency arc noise sensor is disposed across a hot conductor and a neutral conductor and includes a surge protection device and a surge protection circuit such that the surge protection device protects against a first voltage surge in a first range of thousands to hundreds volts and the surge protection circuit protects against a second voltage surge in a second range of hundreds to few volts. The arc fault detection circuit is coupled in series with the high frequency arc noise sensor. The arc fault detection circuit is coupled to a series combination of a trip solenoid or electromagnet and a silicone-controlled rectifier disposed across the hot conductor and the neutral conductor.
Public/Granted literature
- US20210305801A1 SENSING A HIGH FREQUENCY ARC NOISE IN AN ARC FAULT DETECTION CIRCUIT INTERRUPTION (AFCI) DEVICE Public/Granted day:2021-09-30
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