公开(公告)号：US20220065899A1

公开(公告)日：2022-03-03

申请号：US17460377

申请日：2021-08-30

Applicant: Eaton Intelligent Power Limited

Inventor： Adam Gabriel ,  Jeremy Kramer ,  Tomas Drabek

IPC: G01R15/20 ,  H01H9/02

Abstract: A current measuring arrangement includes a first electrical conductor having a first resistance and a second electrical conductor switched in parallel and having a second, higher resistance, wherein both the first resistance and the second resistance are each below 0.1Ω. The arrangement further includes a hall sensor, which is prepared to measure a current through the second electrical conductor, and a calculation unit, which is connected to the hall sensor and which is designed to calculate a total current through the first electrical conductor and the second electrical conductor based on the current measured by the hall sensor. A switching device provides a comparable functionality.

公开(公告)号：US20210389374A1

公开(公告)日：2021-12-16

申请号：US17290997

申请日：2019-10-01

Applicant: Eaton Intelligent Power Limited

Inventor： Tomas Drabek ,  Adam Gabriel

IPC: G01R31/327 ,  H02H3/08 ,  H02H3/33

Abstract: A switch includes: at least one conducting line led through the switch; switching contacts arranged in the at least one conducting line; at least one measurement transformer arranged at the at least one conducting line; an electronic trip unit, a measurement-input of the electronic trip unit being electrically connected to a measurement transformer secondary winding of a measurement transformer; a power supply unit; at least one power transformer arranged at the at least one conducting line, the at least one power transformer including a power transformer secondary winding which is electrically connected to the power supply unit in order to supply the electronic trip unit; a signal generating unit for generating a test signal with at least a first predefined frequency, with an output of the signal generating unit being electrically connected to the power transformer secondary winding; and a self-test unit electrically connected to the measurement transformer secondary winding.

公开(公告)号：US11821923B2

公开(公告)日：2023-11-21

申请号：US17460377

申请日：2021-08-30

Applicant: Eaton Intelligent Power Limited

Inventor： Adam Gabriel ,  Jeremy Kramer ,  Tomas Drabek

IPC: G01R15/20 ,  H01H9/02

CPC classification number: G01R15/202 ,  H01H9/02

Abstract: A current measuring arrangement includes a first electrical conductor having a first resistance and a second electrical conductor switched in parallel and having a second, higher resistance, wherein both the first resistance and the second resistance are each below 0.1Ω. The arrangement further includes a hall sensor, which is prepared to measure a current through the second electrical conductor, and a calculation unit, which is connected to the hall sensor and which is designed to calculate a total current through the first electrical conductor and the second electrical conductor based on the current measured by the hall sensor. A switching device provides a comparable functionality.

公开(公告)号：US11249136B2

公开(公告)日：2022-02-15

申请号：US17290997

申请日：2019-10-01

Applicant: Eaton Intelligent Power Limited

Inventor： Tomas Drabek ,  Adam Gabriel

IPC: G01R31/327 ,  H02H3/33 ,  H02H3/08

Abstract: A switch includes: at least one conducting line led through the switch; switching contacts arranged in the at least one conducting line; at least one measurement transformer arranged at the at least one conducting line; an electronic trip unit, a measurement-input of the electronic trip unit being electrically connected to a measurement transformer secondary winding of a measurement transformer; a power supply unit; at least one power transformer arranged at the at least one conducting line, the at least one power transformer including a power transformer secondary winding which is electrically connected to the power supply unit in order to supply the electronic trip unit; a signal generating unit for generating a test signal with at least a first predefined frequency, with an output of the signal generating unit being electrically connected to the power transformer secondary winding; and a self-test unit electrically connected to the measurement transformer secondary winding.