公开(公告)号：US20220091172A1

公开(公告)日：2022-03-24

申请号：US17484055

申请日：2021-09-24

Applicant: ABB Schweiz AG

Inventor： Matija Varga ,  Yannick Maret ,  Agostino Butti ,  Antonio Currà ,  Vittorio Cozzi ,  Luca Ghezzi

IPC: G01R31/08 ,  G01R31/12 ,  H02H1/00 ,  H02H3/16

Abstract: An arc fault detection device for detecting an arc fault in an electric line includes a first terminal and a second terminal for connecting the arc fault detection device to a conductor of the electric line. A sensor is adapted for generating a sensor signal from a current through the electric line; and a controller is adapted for detecting the arc fault from the sensor signal. The sensor includes an inductor connected to the first terminal and the second terminal and a capacitor connected in parallel with the inductor. The inductor and the capacitor form a resonant circuit with a resonance frequency, the resonance frequency determining an impedance behavior of the resonant circuit; wherein the inductor and the capacitor are chosen such that the impedance behavior of the resonant circuit corresponds to a desired impedance behavior over a relevant frequency range of the current through the electric line.

公开(公告)号：US11686758B2

公开(公告)日：2023-06-27

申请号：US17484055

申请日：2021-09-24

Applicant: ABB Schweiz AG

Inventor： Matija Varga ,  Yannick Maret ,  Agostino Butti ,  Antonio Currà ,  Vittorio Cozzi ,  Luca Ghezzi

IPC: G01R31/08 ,  G01R31/12 ,  H02H1/00 ,  H02H3/16

CPC classification number: G01R31/085 ,  G01R31/08 ,  G01R31/1272 ,  H02H1/0015 ,  H02H3/16

Abstract: An arc fault detection device for detecting an arc fault in an electric line includes a first terminal and a second terminal for connecting the arc fault detection device to a conductor of the electric line. A sensor is adapted for generating a sensor signal from a current through the electric line; and a controller is adapted for detecting the arc fault from the sensor signal. The sensor includes an inductor connected to the first terminal and the second terminal and a capacitor connected in parallel with the inductor. The inductor and the capacitor form a resonant circuit with a resonance frequency, the resonance frequency determining an impedance behavior of the resonant circuit; wherein the inductor and the capacitor are chosen such that the impedance behavior of the resonant circuit corresponds to a desired impedance behavior over a relevant frequency range of the current through the electric line.

公开(公告)号：US20180366935A1

公开(公告)日：2018-12-20

申请号：US16008499

申请日：2018-06-14

Applicant: ABB Schweiz AG

Inventor： Agostino Butti ,  Antonio Currà ,  Luca Ghezzi ,  Vittorio Cozzi

IPC: H02H3/04 ,  G01R31/327 ,  G06F1/08 ,  G01R31/08 ,  G06F1/10 ,  G06F1/14

Abstract: An electronic protection device for a LV electric line, the protection device being provided with a control unit comprising a controller including digital data processing resources clocked by a first clock source adapted to provide a first flock signal with a first nominal clock frequency. The control unit comprises a clock testing arrangement adapted to check whether the first clock source is properly operating.