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    HIGH-VOLTAGE IMPEDANCE ASSEMBLY
    1.
    发明申请
    HIGH-VOLTAGE IMPEDANCE ASSEMBLY 审中-公开

    公开(公告)号：US20200174042A1

    公开(公告)日：2020-06-04

    申请号：US16620665

    申请日：2018-06-13

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Michael H. Stalder ,  Sebastian Eggert-Richter ,  Rainer Fangrat ,  Mark Gravermann ,  Jens Weichold ,  Gunther A.J. Stollwerck ,  Bernd Schubert ,  Hermanus Franciscus Maria Van Meijl ,  Andreea Sabo

    IPC: G01R15/06 ,  H05K1/18

    Abstract: Impedance assembly (2) for use in a voltage divider for sensing an AC voltage of at least 1 kV versus ground of a power-carrying conductor distributing electrical energy in a grid. The impedance assembly comprises a) a printed circuit board (131) comprising one or more dielectric board layers (210, 215, 220), b) an externally accessible high-voltage contact (100), c) an externally accessible low-voltage contact (110), spaced from the high-voltage contact by at least 30 mm, and d) at least two dividing capacitors (91), connected in series between the high-voltage contact and the low-voltage contact and operable as a high-voltage side of the voltage divider. Each dividing capacitor has two electrodes formed by conductive areas (301, 302, 303, 304, 305, 306), arranged on opposed surface portions of a specific dielectric board layer, and a dielectric comprising a portion of the specific dielectric board layer on which the electrodes are arranged. Instead of the dividing capacitors, the impedance assembly may comprise a resistor layer.

    VOLTAGE SENSING DEVICE
    4.
    发明申请
    VOLTAGE SENSING DEVICE 审中-公开
    电压感应装置

    公开(公告)号：US20160341768A1

    公开(公告)日：2016-11-24

    申请号：US15106648

    申请日：2014-12-16

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Mark Gravermann ,  Friedrich A. Busemann ,  Bernd Schubert ,  Gerhard Lohmeier ,  Andreea Sabo ,  Rainer Reeken ,  Michael H. Stalder ,  Christian Weinmann ,  Sebastian Eggert ,  Dipankar Ghosh ,  Myungchan Kang ,  Christopher D. Sebesta

    IPC: G01R15/16 ,  G01R19/00

    CPC classification number: G01R15/16 ,  G01R19/0084

    Abstract: The invention relates to a voltage sensing device for a high and/or medium-voltage power-carrying conductor, the voltages sensing device comprising: • a carrier element (3) with a passageway for receiving the power-carrying conductor, • wherein the carrier element comprises an electrode (4) extending in an axial direction of the passageway of the carrier element and operable as a first electrode of the voltage sensing device, wherein • a conductor (1) of the power cable is operable as the second electrode of the voltage sensing device and wherein • the carrier element has a coefficient of thermal expansion that is less than 5x10̂−6 1/K at 20 C.

    Abstract translation: 本发明涉及一种用于高和/或中压供电导体的电压感测装置，所述电压感测装置包括：•载体元件（3），其具有用于接收所述功率承载导体的通道，其中所述载体 元件包括沿着载体元件的通道的轴向延伸并可用作电压感测装置的第一电极的电极（4），其中电力电缆的导体（1）可操作为第二电极 电压感测装置，其中载体元件的热膨胀系数在20℃时小于5×10 -6 / K。

    VOLTAGE SENSOR
    6.
    发明申请
    VOLTAGE SENSOR 审中-公开
    电压传感器

    公开(公告)号：US20170030946A1

    公开(公告)日：2017-02-02

    申请号：US15106591

    申请日：2014-12-16

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Mark Gravermann ,  Sebastian Eggert ,  Michael Petry ,  Werner Roehling ,  Friedrich A. Busemann ,  Bernd Schubert ,  Gerhard Lohmeier ,  Michael H. Stalder ,  Jens Weichold ,  Rainer Reeken ,  Andreea Sabo ,  Christian Weinmann ,  Dipankar Ghosh ,  Myungchan Kang ,  Christopher D. Sebesta

    IPC: G01R15/16 ,  G01R19/00

    CPC classification number: G01R15/16 ,  G01R15/142 ,  G01R15/181 ,  G01R19/0084

    Abstract: Voltage sensor (1) for a high- or medium-voltage power-carrying conductor for a power network, such as an inner conductor of a power cable or a cable connector or a bus bar. The voltage sensor has a tubular shape and an axial passageway (40), which can receive the conductor. The voltage sensing device comprises a) a radially-inner electrode (20), operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power-carrying conductor, b) a radially-outer electrode (30), operable as a second sensing electrode of the sensing capacitor, and c) a solid carrier element (10), at least a first portion of which is arranged between the inner electrode and the outer electrode, the first portion being operable as a dielectric of the sensing capacitor. The sensor can be accommodated in a cable accessory. The carrier element may comprise ceramic material to increase accuracy.

    Abstract translation: 用于电力网络的高压或中压供电导体的电压传感器（1），例如电力电缆或电缆连接器或汇流条的内部导体。 电压传感器具有管状形状和可接收导体的轴向通道（40）。 所述电压感测装置包括：a）径向内部电极（20），其可用作感测电容器的第一感测电极，用于感测所述功率承载导体的电压; b）径向外部电极（30），其可操作为 感测电容器的第二感测电极，以及c）固体载体元件（10），其至少第一部分布置在所述内部电极和所述外部电极之间，所述第一部分可操作为所述感测电容器的电介质 。 传感器可以容纳在电缆附件中。 载体元件可以包括陶瓷材料以提高精度。

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