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1. 发明专利

JP2004119908A Transformer for gas-insulated instrument 审中-公开
标题翻译：气体绝缘仪表用变压器
公开(公告)号：JP2004119908A
公开(公告)日：2004-04-15
申请号：JP2002284585
申请日：2002-09-30
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TANIGUCHI HIROAKI , OCHI NAOTERU
IPC分类号： H01F38/24
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive transformer for a gas-insulated instrument with a simplified structure and with the reduced number of parts. SOLUTION: The transformer for a gas-insulated instrument comprises an end frame member 2 for holding an iron core 1 and a low pressure shield extending to an opposite side to a primary coil of the iron core, and is sealed and contained in insulated gas. The end frame member includes a press section 2a in contact with an end of the iron core in a direction of lamination, an elongation section 2b extending in the direction of lamination of the iron core from an end of the press section on the side of the primary coil, and an electric field moderating section R2 formed on an end of the elongation section, all formed integrally, the end frame member 2 being adapted to serve as the low pressure shield. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种廉价的用于气体绝缘仪器的变压器，其结构简单且部件数量减少。解决方案：用于气体绝缘仪器的变压器包括用于保持铁芯1的端框架构件2和延伸到与铁芯的初级线圈相反的一侧的低压屏蔽，并被密封并容纳在绝缘气体端框架构件包括在层叠方向上与铁芯的端部接触的挤压部分2a，沿着压板部分的一端在铁芯的层叠方向上延伸的伸长部分2b 初级线圈和形成在伸长部分的端部上的电场调节部分R2全部一体地形成，端部框架构件2适于用作低压屏蔽。版权所有（C）2004，JPO

2. 发明专利

JPH10142265A OPTICAL CURRENT TRANSFORMER 失效
公开(公告)号：JPH10142265A
公开(公告)日：1998-05-29
申请号：JP30208596
申请日：1996-11-13
申请人： MITSUBISHI ELECTRIC CORP
发明人： OCHI NAOTERU
IPC分类号： G01R15/24
摘要： PROBLEM TO BE SOLVED: To provide an optical current transformer which can be miniaturized in a simple structure even in the case of a three phase one batch type gas insulating apparatus, and can carry out accurate current measurement without the influence of an current flowing in another phase applied current conductor. SOLUTION: An optical current transformer is equipped with three optical fibers 14a, 14b, 14c which are annularly wound on each periphery of three applied current conductors 3a, 3b, 3c and led out from a tank 1 at each both ends, a luminous section 9a for making a linear polarized light incident on the above optical fibers, and measuring sections 10a, 10b, 11a which detect an outgoing light emitted from the above optical fibers and measure an electric current flowing in the above applied current conductors on a polarized light state resulting from the Faraday effect of passing light.

3. 发明专利

JPH0382108A TRANSFORMER FOR OPTICAL INSTRUMENT 失效
公开(公告)号：JPH0382108A
公开(公告)日：1991-04-08
申请号：JP21747489
申请日：1989-08-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： OCHI NAOTERU
IPC分类号： H01F38/24 , G01R15/06 , G01R15/24
摘要： PURPOSE:To contrive prevention of erroneous operation of a relay and to generate an output difference on two or more sets of signal processing circuits by a method wherein a main capacitor and two or more voltage-divider capacitors are connected in series, and the voltage-divider capacitors and a photoelectric voltage sensor are connected in parallel with each other. CONSTITUTION:A main capacitor 5 and a first voltage-divider capacitor 14a are connected on series. Also, a second voltage-divider capacitor 14b is connected in series to the main capacitor 5 and the first voltage-divider capacitor 14a. A photoelectric sensor 10a is connected to the first voltage-divider capacitor 14a, and a photoelectric sensor 10b is connected to the second voltage-divider capacitor 14b respectively. Accordingly, even when a short-circuit trouble is generated on a photoelectric sensor, as the two or more photoelectric sensors 10a and 10b are series-connected to each independent voltage-divider capacitor, an output difference is generated at least between two sets of signal processing circuits which are connected to the photoelectric sensor.

4. 发明专利

JP2003270272A Current measuring instrument 有权
标题翻译：当前测量仪器
公开(公告)号：JP2003270272A
公开(公告)日：2003-09-25
申请号：JP2002077419
申请日：2002-03-20
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： OGURA SHINZO , MAEDA YASUHIRO , TANIGUCHI HIROAKI , OCHI NAOTERU
IPC分类号： G01R15/18 , G01R19/00 , H01F38/28
摘要： PROBLEM TO BE SOLVED: To provide a current measuring instrument for reducing current measuring errors due to variations of winding densities when Rogowski coils are manufactured and variations of interlinkage cross section areas and improving measuring accuracy although a simple constitution is used. SOLUTION: In the current measuring instrument for measuring measured currents of primary conductors by using outputs of a plurality of the Rogowski coils 5, 6, 7 provided around a plurality of primary conductors 2, 3, 4 disposed in parallel, a common cylinder element 8 is provided and covers a plurality of the Rogowski coils with a circumference 8a comprising a nonmagnetic conductive member and disposed parallel to the primary conductors and currents induced by the currents of the primary conductors are conducted to the cylinder element 8. COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种电流测量仪器，用于减少当制造罗氏线圈时的卷绕密度的变化导致的电流测量误差，并且尽管使用简单的结构，但提高了连接截面面积并提高了测量精度。解决方案：在用于测量主导体测量电流的当前测量仪器中，通过使用设置在并联设置的多个主导体2,3,4周围的多个Rogowski线圈5,6,7的输出，圆筒元件8设置并且覆盖多个罗戈夫斯基线圈，其周长8a包括非磁性导电构件并且平行于主导体设置，并且由主导体的电流引起的电流被传导到气缸体8。版权所有（C）2003，JPO

5. 发明专利

JP2000040631A TRANSFORMER 失效
公开(公告)号：JP2000040631A
公开(公告)日：2000-02-08
申请号：JP12797399
申请日：1999-05-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： OGURA SHINZO , MORISHITA HIKOZO , OCHI NAOTERU , NAKASAKI KAZUHIRO , UMENO CHIHARU
IPC分类号： H01F27/36 , H01F27/38 , H01F38/28 , H01F38/30
摘要： PROBLEM TO BE SOLVED: To obtain a transformer which can be made compact and light by reducing heating due to a shield coil. SOLUTION: This is a transformer 8 constituted by binding transformer units 8a and 8b having annular iron cores 2a and 2b surrounding a bus 1 to be measured, and secondary coils 3a and 3b wound around the iron cores 2a and 2b for measuring the currents of the bus 1 to be measured. This transformer 8 is provided with a shield coil 4 wound around the plural transformer units 8a and 8b in a batch.

6. 发明专利

JPH05119134A OPTICAL SENSOR 失效
公开(公告)号：JPH05119134A
公开(公告)日：1993-05-18
申请号：JP24903591
申请日：1991-09-27
申请人： MITSUBISHI ELECTRIC CORP
发明人： OCHI NAOTERU
IPC分类号： G01R15/24 , G01R33/032
摘要： PURPOSE:To perform highly accurate measurement by compensating for the amount of fluctuation sufficiently even if the fluctuation in the attenuating amount is quick in an optical sensor for optically detecting the physical quantities such as a magnetic field and an electric field. CONSTITUTION:The light beams are emitted from light emitting elements 1a and 1b, which are provided at both ends of a light transmitting path, on a magnetic-field detecting part 3. The intensities of the light beams emitted from the magnetic-field detecting part are detected with photodetectors 8a and 8b at the opposite side. The intensities of the detected lights are split into the first DC components and the first AC components and the second DC component and the second AC components, respectively, with AC-DC discriminators 9a and 9b. The light emitting intensities of the light emitting elements 1a and 1b are controlled based on the first DC component and the second DC component. The first AC component and the second AC component are subtracted through an operating means 15, and the physical quantity is detected.

7. 发明专利

JP2000314751A OPTICAL TRANSFORMER 失效
公开(公告)号：JP2000314751A
公开(公告)日：2000-11-14
申请号：JP23112299
申请日：1999-08-18
申请人： MITSUBISHI ELECTRIC CORP , TOKYO ELECTRIC POWER CO
发明人： NAKASAKI KAZUHIRO , OCHI NAOTERU , KUROSAWA KIYOSHI , YAMASHITA KAZUNORI
IPC分类号： G01R15/24 , G02B6/00
摘要： PROBLEM TO BE SOLVED: To shorten the total length of a sensing fiber by winding the fiber around a conductor for carrying a measuring current, to make straight polarized light enter the fiber and to separate outgoing light into polarized components, and enclosing the fiber in a circulating groove of an annular frame body. SOLUTION: A sensing fiber 1 is wound around a conductor 4 being embedded in a circulating groove 7 formed at the axial end face 20 of an annular frame body 2. Incident light from a light source via an external fiber 10 becomes a straight polarized light at a polarizer part 21 via an optical connector 5 and an incoming fiber 15 and passes the fiber 1 to circulate around the conductor 4, and is separated into two orthogonal polarized light components at an analyzer part 12 and passes X, Y outgoing fibers 14a, 14b and travels toward an optical signal measuring device via the optical connector 5 and external fiber 10. The polarizer part 21 and analyzer part 12 are enclosed in recessed parts sufficiently deep from the height of their cases, and the depth of the circulating groove is also made sufficiently deep. The fiber 1 can therefore be prevented from bending in close proximity to the polarizer part 21 and analyzer part 12.

8. 发明专利

JP2000173844A CURRENT TRANSFORMER 失效
公开(公告)号：JP2000173844A
公开(公告)日：2000-06-23
申请号：JP34279798
申请日：1998-12-02
申请人： MITSUBISHI ELECTRIC CORP
发明人： MORISHITA HIKOZO , OCHI NAOTERU , NAKASAKI KAZUHIRO , OGURA SHINZO , UMENO CHIHARU
IPC分类号： H01F27/08 , H01F38/28
摘要： PROBLEM TO BE SOLVED: To provide a current transformer which is high in cooling efficiency even if it is small in size. SOLUTION: A wire is spirally wound on all the circumference of an annular iron core which is rectangular in cross section for the formation of an annular coil 1a, and a support 5 is composed of a cylinder 51 and a flange 52 provided to the one end of the cylinder 51. The three annular coils 1a are stacked up, the cylinder 51 is made to penetrate through the stacked annular coils 1a, square rod spacers 54 are pinched between the annular coil 1a on the flange 52 side and the flange 52, and spacers 55 are pinched between the cylinder 51 and the inner circumferential surface of the annular coils 1a for the formation of a current transformer 1. A bus 4 is provided through the center of the current transformer 1, and the current transformer 1 is capable of detecting a current that flows through the bus 4. A cooling path is formed by the spacers 54 and 55 between the annular coils 1a and the support 5 to effectively cool down the inside of the current transformer 1.

9. 发明专利

JPH07146313A CAPACITOR VOLTAGE DIVIDER 失效
公开(公告)号：JPH07146313A
公开(公告)日：1995-06-06
申请号：JP29346093
申请日：1993-11-24
申请人： MITSUBISHI ELECTRIC CORP
发明人： MORISHITA HIKOZO , NISHIKURA YOSHIMI , OCHI NAOTERU , YAMAMOTO NAOTO
IPC分类号： G01R15/06 , H02G5/06
摘要： PURPOSE:To obtain a capacitor voltage divider which is mounted on gas insulated electronic equipment and the voltage detecting accuracy of which does not drop even when a temperature change occurs by improving the voltage detecting accuracy of the divider. CONSTITUTION:A capacitor voltage divider is constituted so that its capacitance can be accurately recognized from a design stage by providing an auxiliary electrode 15 at the end section of a main electrode 13 concentrically installed with an inner conductor 2 near the internal surface of a metallic container 1 and preventing the expansion of an electric field at the end section of the electrode 13. In addition, the voltage divider is constituted so that materials having desirable coefficients of linear expansion can be selected for the conductor 2 and electrode 13 by defining the relation which does not allow the capacitance of the voltage divider to change between the coefficients of linear expansion of the materials used for the conductor 2 and electrode 13 in corresponding to the diametric ratios of the conductor 2 and electrode 13 so that the capacitance of the voltage divider cannot change even when a temperature change occurs. Therefore, detecting voltage adjusting work and calibrating work can be easily performed on the voltage divider after assembly and the voltage detecting accuracy of the voltage divider does not drop even when the temperature change occurs, since the capacitance of the voltage divider can be accurately recognized from a design stage.

10. 发明专利

JPH06338429A THROUGH-TYPE CURRENT TRANSFORMER 失效
公开(公告)号：JPH06338429A
公开(公告)日：1994-12-06
申请号：JP12902693
申请日：1993-05-31
申请人： MITSUBISHI ELECTRIC CORP
发明人： MORISHITA HIKOZO , OCHI NAOTERU , NISHIKURA YOSHIMI , YAMAMOTO NAOTO
IPC分类号： H01F38/28 , H01F40/06
摘要： PURPOSE:To provide a through-type current transformer in which an air-core current transformer is hardly affected by the leakage flux of a through-type current transformer. CONSTITUTION:In a through-type current transformer, through-type current transformers 1 and an air-core current transformer 2 are fitted into, and fixed to, a cylindrical metal-tube support body 3, and a primary conductor 10 to be used as a primary winding for the through-type current transformers 1 and the air-core current transformer 2 is inserted into the metal-tube support body 3. In the current transformer, spacers 8 of a prescribed thickness which magnetically isolates the through-type current transformers 2 and the air-core current transformer 2 which are adjacent are sandwiched and inserted.

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