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1.发明申请公开(公告)号：US20180372800A1
公开(公告)日：2018-12-27
申请号：US15973762
申请日：2018-05-08
Applicant: Schneider Electric Industries SAS
Inventor： Pierre Blanchard , Jiri Stepanek , Bruno BORDET
IPC: G01R31/327 , H02H1/00 , H02H3/05
Abstract: A device for testing the operation of a protection unit of an electrical network. The test device includes a generator for generating a pulse train in a secondary winding of a current transformer according to a profile of frequencies such that a measurement of the pulse train after passage through a low-pass filter is lower than a selected trip threshold, and a processing circuit arranged to identify a presence of the pulse train in a signal delivered by a second secondary winding of the current transformer. A protection unit including such a test device and to a method for testing an electrical protection unit.
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公开(公告)号：US09515478B2
公开(公告)日：2016-12-06
申请号：US14435946
申请日：2013-10-17
Applicant: SCHNEIDER ELECTRIC INDUSTRIES SAS
Inventor： Jiri Stepanek , Simon Tian , Eric Domejean , Yvan Cadoux
Abstract: A protection system configured to protect plural DC voltage sources configured to be connected in parallel between first and second input terminals of a voltage inverter. The voltage inverter can convert a DC input voltage into an AC output voltage. Each DC voltage source is connected by a first electrical conductor to the first input terminal and by a second electrical conductor to the second input terminal. The protection system includes: for each DC voltage source, a first cut-off member and first detector of a defect of isolation of the first conductor with respect to an electrical ground, the first detector and associated first cut-off member connected in series between the corresponding DC voltage source and the first input terminal of the inverter; and a mechanism triggering, in event of detection of the isolation defect, the associated first cut-off member to open the electrical link corresponding to the first conductor.
Abstract translation: 一种保护系统，被配置为保护被配置为并联连接在电压逆变器的第一和第二输入端子之间的多个DC电压源。 电压逆变器可以将直流输入电压转换为交流输出电压。 每个直流电压源通过第一电导体连接到第一输入端，并通过第二电导体连接到第二输入端。 保护系统包括：对于每个DC电压源，第一截止元件和第一检测器，其相对于电接地隔离第一导体的缺陷，第一检测器和相关联的第一截止元件串联连接在 相应的直流电压源和逆变器的第一输入端; 以及在检测到隔离缺陷的情况下触发相关联的第一切断构件以打开对应于第一导体的电连接的机构。
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Patent Agency Ranking
公开(公告)号：US20230187921A1
公开(公告)日：2023-06-15
申请号：US18080209
申请日：2022-12-13
Applicant: Schneider Electric Industries SAS
Inventor： Jiri Stepanek , Henricus David Stokman
IPC: H02H3/00
CPC classification number: H02H3/00
Abstract: A system for managing an insulation fault in an electrical installation includes a monitoring device, measuring devices configured to measure an electrical quantity in the installation, and switches controlled by the monitoring device. The monitoring device is configured to: [[·]] detect a first insulation fault in the installation; [[·]] detect a second insulation fault in the installation; [[ ]] and automatically control one of the switches associated with output terminals so as to open in order to eliminate one of the detected electrical faults, the switch to be opened being chosen depending on the location of the detected insulation faults and on predefined control laws making it possible to disconnect only some of the electrical loads.
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公开(公告)号：US20150288167A1
公开(公告)日：2015-10-08
申请号：US14435946
申请日：2013-10-17
Applicant: SCHNEIDER ELECTRIC INDUSTRIES SAS
Inventor： Jiri Stepanek , Simon Tian , Eric Domejean , Yvan Cadoux
Abstract: A protection system configured to protect plural DC voltage sources configured to be connected in parallel between first and second input terminals of a voltage inverter. The voltage inverter can convert a DC input voltage into an AC output voltage. Each DC voltage source is connected by a first electrical conductor to the first input terminal and by a second electrical conductor to the second input terminal. The protection system includes: for each DC voltage source, a first cut-off member and first detector of a defect of isolation of the first conductor with respect to an electrical ground, the first detector and associated first cut-off member connected in series between the corresponding DC voltage source and the first input terminal of the inverter; and a mechanism triggering, in event of detection of the isolation defect, the associated first cut-off member to open the electrical link corresponding to the first conductor.
Abstract translation: 一种保护系统，被配置为保护被配置为并联连接在电压逆变器的第一和第二输入端子之间的多个DC电压源。 电压逆变器可以将直流输入电压转换为交流输出电压。 每个直流电压源通过第一电导体连接到第一输入端，并通过第二电导体连接到第二输入端。 保护系统包括：对于每个DC电压源，第一截止元件和第一检测器，其相对于电接地隔离第一导体的缺陷，第一检测器和相关联的第一截止元件串联连接在 相应的直流电压源和逆变器的第一输入端; 以及在检测到隔离缺陷的情况下触发相关联的第一切断构件以打开对应于第一导体的电连接的机构。
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5.发明授权公开(公告)号：US11619681B2
公开(公告)日：2023-04-04
申请号：US17387744
申请日：2021-07-28
Applicant: Schneider Electric Industries SAS
Inventor： François Vincent , Jiri Stepanek
Abstract: A method for detecting an isolation fault in an electrical installation comprises: measuring an AC electrical voltage between phase conductors of an electrical load to be monitored and ground, and an electric fault current flowing between said electrical load and ground; identifying, in the measured electrical voltage, at least one first component oscillating at the predefined first frequency and one second component oscillating at the predefined second frequency; calculating an impedance of the electrical fault from the measurements and an impedance of the electrical installation from the identified first and second components; selecting a predetermined case from a predefined list; and identifying an operating condition of the electrical installation on the basis of the selected predetermined case.
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6.发明申请公开(公告)号：US20220091191A1
公开(公告)日：2022-03-24
申请号：US17387744
申请日：2021-07-28
Applicant: Schneider Electric Industries SAS
Inventor： François Vincent , Jiri Stepanek
Abstract: A method for detecting an isolation fault in an electrical installation comprises: measuring an AC electrical voltage between phase conductors of an electrical load to be monitored and ground, and an electric fault current flowing between said electrical load and ground; identifying, in the measured electrical voltage, at least one first component oscillating at the predefined first frequency and one second component oscillating at the predefined second frequency; calculating an impedance of the electrical fault from the measurements and an impedance of the electrical installation from the identified first and second components; selecting a predetermined case from a predefined list; and identifying an operating condition of the electrical installation on the basis of the selected predetermined case.
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公开(公告)号：US10955475B2
公开(公告)日：2021-03-23
申请号：US15973762
申请日：2018-05-08
Applicant: Schneider Electric Industries SAS
Inventor： Pierre Blanchard , Jiri Stepanek , Bruno Bordet
IPC: G01R31/28 , G01R31/327 , H02H1/00 , H02H3/05 , H02H3/08
Abstract: A device for testing the operation of a protection unit of an electrical network. The test device includes a generator for generating a pulse train in a secondary winding of a current transformer according to a profile of frequencies such that a measurement of the pulse train after passage through a low-pass filter is lower than a selected trip threshold, and a processing circuit arranged to identify a presence of the pulse train in a signal delivered by a second secondary winding of the current transformer. A protection unit including such a test device and to a method for testing an electrical protection unit.
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