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1. 发明公开

EP2518516A1 SINGLE-PHASE OPTICAL CURRENT TRANSFORMER 审中-公开
标题翻译： OPTISCHER EINZELPHASEN-STROMTRANSFORMATOR
公开(公告)号：EP2518516A1
公开(公告)日：2012-10-31
申请号：EP10839326.5
申请日：2010-12-13
申请人： Hitachi, Ltd. , Toko Electric Corporation
发明人： ZHANG, Wei , YAMAGUCHI, Tatsushi
IPC分类号： G01R15/24
CPC分类号： G01R15/246
摘要： An installation base is secured to part of outer peripheral surface of cylindrical container 1 which has electric conductor 2 arranged thereinside, and a case which stores a Faraday-effect element is detachably secured to the installation base. Faraday-effect element 10 having two optical fibers 24A, 24B of prescribed dimensions, to provide first and second optical paths 11A, 11B maintained in parallel with a predetermined interval therebetween and placed so as to intersect axial direction of electric conductor 2, and having mirror 12 which reflects linearly polarized light at one end surface of each optical fiber. Linearly polarized light from the same light source injected into each of the optical paths 11A, 11B, and current flowing in electric conductor 2 is measured base on the Faraday rotation angle of the linearly polarized light reflected and returned from mirror 12.
摘要翻译：安装基座固定在圆筒形容器1的外侧表面的一部分上，该圆筒形容器1的外侧布置有导电体2，并且存储法拉第效应元件的壳体可拆卸地固定在安装基座上。具有规定尺寸的两根光纤24A，24B的法拉第效应元件10，以提供保持与其间的预定间隔平行的第一和第二光路11A，11B，并与电导体2的轴向相交并配置 12，其反映每个光纤的一个端面处的线偏振光。基于从反射镜12反射并返回的线偏振光的法拉第旋转角度，测量注入到每个光路11A，11B中的相同光源的线偏振光和在导电体2中流动的电流。

2. 发明公开

EP2549278A1 OPTICAL-FIBER-CONTAINING INSULATING SPACER 审中-公开
标题翻译： GLASFASERHALTIGES ISOLIERENDESABSTANDSSTÜCK
公开(公告)号：EP2549278A1
公开(公告)日：2013-01-23
申请号：EP11756211.6
申请日：2011-03-08
申请人： Hitachi, Ltd.
发明人： ZHANG, Wei , KAWAMATA, Masashi , YAMAGUCHI, Tatsushi , SHIOZAWA, Daigorou
IPC分类号： G01R15/24
CPC分类号： G01R15/246 , H02B13/0356 , H02G5/066
摘要： Insulating spacer 1 has insulating molded member 3 molded as a single body with insulating material such as epoxy resin, in which at least one electric conductor 2, a grounding shield surrounding the electric conductor(s), and Optical fiber 14 of Faraday-effect element are embedded to form a build-in configuration. The grounding shield can be formed of cylindrical shielding member 15 made of metal wires, metal strips, or a cylindrical metallic member having a perforation of a plurality of small holes thereon. The aforementioned optical fiber 14, which is to be used as a component of an optical current transformer, is put in a certain place in cylindrical shielding member 15.
摘要翻译：绝缘间隔件1具有绝缘模制构件3，该绝缘模制构件3用诸如环氧树脂的绝缘材料作为单体模制，其中至少一个电导体2，围绕导电体的接地屏蔽层以及法拉第效应元件的光纤14 被嵌入以形成内置配置。接地屏蔽可以由金属线，金属带或其上具有多个小孔的圆柱形金属构件制成的圆柱形屏蔽构件15形成。将要用作光电流互感器的组件的上述光纤14放置在圆筒形屏蔽构件15中的某个位置。

3. 发明公开

EP2570817A1 OPTICAL CURRENT TRANSFORMER FOR GAS-INSULATED APPARATUS 审中-公开
标题翻译： OPTISCHER STROMTRANSFORMATORFÜREINE GASISOLIERTE VORRICHTUNG
公开(公告)号：EP2570817A1
公开(公告)日：2013-03-20
申请号：EP11780736.2
申请日：2011-05-12
申请人： Hitachi, Ltd.
发明人： ZHANG, Wei , KAWAMATA, Masashi , NAKAMICHI, Hiroyuki , YAMAGUCHI, Tatsushi , SHIOZAWA, Daigorou
IPC分类号： G01R15/24 , H02B13/02
CPC分类号： G01R19/00 , G01R15/246 , H02B13/0356
摘要： At least one conductor is disposed in sealed vessel 10, which is filled with insulating gas, an hand hole 11 is provided to a part of sealed vessel 10 and is closed by a sealed cover 12, and optical fibers 14 are disposed that form a closed loop surrounding conductor 13 in sealed vessel 10. Optical fibers 14 are hermetically led out of sealed vessel 10 from sealed cover 12 and are provided with at least a light source unit and an optical signal processor unit at the lead-out end. An airtight hollow tube 30 disposed looping around leaving a predefined distance of separation is provided to conductor 13 in sealed vessel 10, the end of tube 30 is hermetically connected to sealed cover 12 by sealing/bonding means 31, and optical fibers 14 can be inserted in sealing/bonding means 31.
摘要翻译：至少一个导体设置在密封容器10中，其中填充有绝缘气体，手孔11设置在密封容器10的一部分上，并由密封盖12封闭，光纤14被设置成形成封闭的环形导体13在密封容器10中。光纤14从密封盖12密封地从密封容器10引出，并且在引出端至少设有光源单元和光信号处理器单元。在密封容器10中的导体13上设置环绕的环形密封空心管30，密封容器10中的管13的端部通过密封/粘合装置31气密地连接到密封盖12，并且可以插入光纤14 在密封/粘合装置31中。

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