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公开(公告)号：US12092663B2
公开(公告)日：2024-09-17
申请号：US17758174
申请日：2020-12-21
Applicant: EATON INTELLIGENT POWER LIMITED
Inventor： Pradeep Bhutada , Wilhelmus Van Den Bogaard , Elisabeth Morskieft , Yogesh Rajwade , Tejaswini Shirsath Shirsath , Adri Lammers
CPC classification number: G01R15/181 , G01R15/04 , G01R19/32
Abstract: Sensor part for installation in medium-voltage cable compartments, which sensor part comprises a voltage divider based on the capacitive divider principle, which voltage divider comprises: —a first capacitor, comprising an elongate primary conductor wrapped in a dielectric material and an elongate conducting shield arranged around the dielectric material, which first capacitor has a first capacitance rating; —a second capacitor, having a second capacitance rating, which second capacitor further comprises a first lead conductively connected with the conducting shield of the first capacitor and a second lead conductively connected to a common reference, such as earth; —a voltage output line, conductively connected with the conducting shield of the first capacitor; wherein the second capacitance rating is larger than the first capacitance rating, so that when during use the primary conductor is conductively connected with a live circuit carrying an alternating current, a measurement of a voltage between the common reference and the voltage output line can be taken as a ratio of the voltage between the live circuit and the common reference.
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公开(公告)号：US11927618B2
公开(公告)日：2024-03-12
申请号：US17929091
申请日：2022-09-01
Applicant: Eaton Intelligent Power Limited
Inventor： Elise Morskieft , Marcel Van Dijk , Vijay Kumar , Yogesh Rajwade
CPC classification number: G01R31/1254
Abstract: A method of predicting a lifetime of a gas filling of an electrical switchgear is disclosed, wherein pressure values p1, p2 in a system of the electrical switchgear containing the gas filling at a predefined temperature Tp at different points in time t1, t2 are measured. Based on the pressure difference Δp between the pressure values p1, p2 the lifetime of the gas filling is calculated. Alternatively, the pressure values p1, p2 can be taken at temperatures T1, T2 within a predefined temperature range at different points in time t1, t2.
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公开(公告)号：US11831152B2
公开(公告)日：2023-11-28
申请号：US17340120
申请日：2021-06-07
Applicant: Eaton Intelligent Power Limited
Inventor： Volker Heins , Axel Britz , Amritendu Das , Yogesh Rajwade , Himadri Sengupta , Sandeep Yeole , Christoph Bausch
Abstract: A short circuit test device includes: a first line test conductor couplable to a first load line conductor of an electric load network and a neutral test conductor couplable to a neutral conductor of the electric load network; a voltage source switchable to the first line test conductor and the neutral test conductor to output a predefinable test signal; a measurement unit for measuring an electric voltage and/or current, the measurement unit including measurement inputs which are connectable to the first line test conductor and the neutral test conductor, the measurement unit including an output for providing a measurement signal; and a control unit connected to the voltage source and the measurement unit, the control unit: causing the voltage source to apply a test voltage to the first line test conductor and the neutral test conductor and comparing the measurement signal provided by the measurement unit.
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公开(公告)号：US20210391712A1
公开(公告)日：2021-12-16
申请号：US17340120
申请日：2021-06-07
Applicant: Eaton Intelligent Power Limited
Inventor： Volker Heins , Axel Britz , Amritendu Das , Yogesh Rajwade , Himadri Sengupta , Sandeep Yeole , Christoph Bausch
Abstract: A short circuit test device includes: a first line test conductor couplable to a first load line conductor of an electric load network and a neutral test conductor couplable to a neutral conductor of the electric load network; a voltage source switchable to the first line test conductor and the neutral test conductor to output a predefinable test signal; a measurement unit for measuring an electric voltage and/or current, the measurement unit including measurement inputs which are connectable to the first line test conductor and the neutral test conductor, the measurement unit including an output for providing a measurement signal; and a control unit connected to the voltage source and the measurement unit, the control unit: causing the voltage source to apply a test voltage to the first line test conductor and the neutral test conductor and comparing the measurement signal provided by the measurement unit.
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