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    ACCURACY ENHANCING MECHANISM AND METHOD FOR CURRENT MEASURING APPARATUS
    3.
    发明公开
    ACCURACY ENHANCING MECHANISM AND METHOD FOR CURRENT MEASURING APPARATUS 审中-公开
    PRECISION增长机制和方法功率计

    公开(公告)号：EP2201323A1

    公开(公告)日：2010-06-30

    申请号：EP08838669.3

    申请日：2008-10-16

    申请人： Dynamp LLC

    发明人： MASRI, Farid, E. ,  SHERMAN, Christopher, S.

    IPC分类号： G01B9/02

    CPC分类号： G01R15/246 ,  G01R15/247

    摘要： An optical interferometer used to measure the current in a conductor, where the gap between the mirror and the quarter wave plate is minimized, and the gap is shielded magnetically. Additionally, at least the modulator is shielded, and preferably the case containing many of the components, such as the integral number of turns of optical fiber in a coil, is magnetically shielded. By shielding the components, and reducing the gap between the quarter wave plate and the mirror, the error in the current measurement is substantially reduced.

    3-phase Faraday optical current sensor assembly
    4.
    发明公开
    3-phase Faraday optical current sensor assembly 审中-公开
    Dreiphasige optische Faraday-Stromsensoranordnung

    公开(公告)号：EP2148210A1

    公开(公告)日：2010-01-27

    申请号：EP08013088.3

    申请日：2008-07-21

    申请人： PowerSense A/S

    发明人： The designation of the inventor has not yet been filed

    IPC分类号： G01R15/24

    CPC分类号： G01R15/246 ,  G01R15/247

    摘要： The object of the invention is to provide a method and a system for fixating a Faraday optical current sensor (12a,12b,12c) in a suitable measurement position for measuring the current in a 3-phase cable (14). The 3-phase cable (14) comprises 3 individual section-shaped phase conductors (16a,16b,16c) insulated in relation to one another and encapsulated inside an insulator (18). The method comprises the provision of a Faraday optical current sensor arrangement comprising 3 Faraday optical current sensors (12a,12b,12c), each Faraday optical current sensor being fixated in a specific position outside the section-shaped phase conductors (16a,16b,16c), and the provision of a processing unit for calculating a current value from a magnetic field value. The method is performed by measuring 3 magnetic field values by using each of the 3 Faraday optical current sensors (12a,12b,12c) and calculating the current in each of the section-shaped phase conductors (16a,16b,16c) by using the processing unit and the 3 magnetic field values.

    摘要翻译： 本发明的目的是提供一种用于将法拉第光学电流传感器（12a，12b，12c）固定在用于测量三相电缆（14）中的电流的适当测量位置的方法和系统。 三相电缆（14）包括彼此绝缘并封装在绝缘体（18）内的3个单独的截面形状的相导体（16a，16b，16c）。 该方法包括提供包括3个法拉第光学电流传感器（12a，12b，12c）的法拉第光学电流传感器装置，每个法拉第光学电流传感器被固定在分段状相位导体（16a，16b，16c）外部的特定位置 ），并且提供用于从磁场值计算当前值的处理单元。 该方法通过使用3个法拉第光电流传感器（12a，12b，12c）中的每一个测量3个磁场值，并通过使用该方法计算每个截面形状的相导体（16a，16b，16c）中的电流 处理单元和3个磁场值。

    FIBEROPTIC FARADAY EFFECT SENSOR
    7.
    发明公开
    FIBEROPTIC FARADAY EFFECT SENSOR 有权
    光纤法拉第效应传感器

    公开(公告)号：EP1625408A2

    公开(公告)日：2006-02-15

    申请号：EP04732275.5

    申请日：2004-05-12

    申请人： Kasmatic Innovation A/S ,  Nesa A/S

    发明人： BJORN, Lars, Norgaard

    IPC分类号： G01R15/24 ,  G01R35/00

    CPC分类号： G01R15/247 ,  G01R15/246 ,  G01R35/005

    摘要： An electric current measurement device, comprises a housing defining a first open end and a second open end. A first sealing means has an aperture and has an overall geometrical configuration corresponding to the overall geometrical configuration of the first open end. The first sealing means further comprises an aperture adapted for receiving a first optical fibre to be fixated by means of a first fixture mean. A first optical lens has a reception part for receiving the first fixture means for mounting the first optical fibre in optical continuation with the first optical lens. A first polarisation filter mounted in the housing in optical continuation with the first optical lens. A glass rod is received in and encapsulated within the housing in optical continuation with the first polarisation filter. The glass rod is constructed from a material having magneto-optical properties. The device further comprises a second polarisation filter mounted in the housing in optical continuation with the glass rod, a second optical lens mounted in the housing, a second fixture means for fixating a second optical fibre, and a second sealing means for sealing the second end of the housing.