公开(公告)号：US12073976B2

公开(公告)日：2024-08-27

申请号：US18269034

申请日：2021-12-22

申请人： HITACHI ENERGY LTD

发明人： Jan Czyzewski ,  Tor Laneryd ,  Johan Dahlgren ,  Sebastian Seier ,  Nils Lavesson

IPC分类号： H01F27/12 ,  H01F27/40 ,  H01F38/28

CPC分类号： H01F27/12 ,  H01F2027/404 ,  H01F38/28

摘要： An electric device includes a tank and a cable box connected to the tank, the tank and the cable box being filled with an insulating liquid electric connection system for connecting a power cable through the cable box to the tank and a current measuring device for measuring electric current in the electric connection system, wherein the current measuring device is located adjacent to a housing of the cable box.

公开(公告)号：US10060962B2

公开(公告)日：2018-08-28

申请号：US14675541

申请日：2015-03-31

申请人： The United States of America as represented by the Secretary of the Navy

发明人： Josue Kure ,  Timothy Gomez ,  Patrick Arvin

IPC分类号： H01F27/28 ,  G01R29/20 ,  G01R23/00 ,  G01R31/02 ,  H01F38/28 ,  H01F21/12 ,  H01F27/42 ,  H01F29/14

CPC分类号： G01R29/20 ,  G01R23/00 ,  G01R27/02 ,  G01R31/027 ,  G01R35/02 ,  H01F21/12 ,  H01F27/42 ,  H01F38/28 ,  H01F2029/143

摘要： A system and method for tuning a transformer is provided. A transformer fixture may connect a switching network to a plurality of inductors of a transformer. At least one computing device may calculate a target number of turns for a primary coil and a secondary coil of the transformer based on a frequency response of the transformer. The switching network may connect the inductors of the transformer together in a pattern that results in the primary coil and secondary coil having the target number of turns.

公开(公告)号：US09943009B2

公开(公告)日：2018-04-10

申请号：US15214964

申请日：2016-07-20

申请人： Deere & Company

发明人： Christopher J. Schmit

IPC分类号： H05K7/20 ,  G01R15/18 ,  G01R1/44 ,  G01R5/22 ,  G01R19/32 ,  G01R21/02 ,  G01R21/14

CPC分类号： H05K7/2039 ,  G01R15/18 ,  G01R15/183 ,  H01F27/08 ,  H01F38/28 ,  H05K7/209

摘要： An electrical assembly includes a heat conducting housing. A conductor is supported by the housing and conducts electrical current. An electrical insulator member surrounds the conductor. A core surrounds the insulator member and the conductor so that current flowing through the conductor induces a magnetic field in the core. A transducer is coupled to the core for generating a signal representing current in the conductor. A thermal interface member engages the core and engages the housing. The interface member conducts or can conduct heat to the housing.

公开(公告)号：US09784773B2

公开(公告)日：2017-10-10

申请号：US15033973

申请日：2013-11-06

申请人： SCHNEIDER ELECTRIC IT CORPORATION

发明人： Vishwas Mohaniraj Deokar ,  Namwook Paik ,  Jeffrey Steven Young

IPC分类号： G01R15/18 ,  G01R19/25 ,  H02J13/00 ,  G01R15/14 ,  H01F38/28 ,  H01R9/00 ,  H01R13/58 ,  H02J3/02 ,  H02M7/04 ,  H01R4/24 ,  H01R25/14 ,  G01R1/22

CPC分类号： G01R19/2513 ,  G01R1/22 ,  G01R15/142 ,  H01F38/28 ,  H01R4/2433 ,  H01R9/00 ,  H01R13/58 ,  H01R25/142 ,  H02J3/02 ,  H02J13/0055 ,  H02J13/0093 ,  H02M7/04 ,  Y02E60/727 ,  Y04S10/26

摘要： According to one aspect, embodiments of the invention provide a system for monitoring a load center including a plurality of current sensors, a communication bus, a plurality of sensor circuits, a power module configured to be coupled to a load center input line and to receive input AC power from the input line, a collector, and a cable configured to be coupled between the power module and the collector, wherein the power module is further configured to provide power to the plurality of sensor circuits via the communication bus, provide power to the collector via the cable, measure at least one of voltage, frequency and phase of input AC power and provide signals related to the measured voltage, frequency or phase to the collector via the cable, receive current measurement signals from the plurality of sensor circuits and provide the received current measurement signals to the collector via the cable.

公开(公告)号：US09671434B2

公开(公告)日：2017-06-06

申请号：US14454861

申请日：2014-08-08

申请人： Aclara Meters LLC

发明人： Steven Lee Bietz ,  Subramanyam Satyasurya Chamarti

IPC分类号： G01R19/00 ,  G01R15/18 ,  H01F38/28

CPC分类号： G01R15/18 ,  G01R15/181 ,  G01R15/186 ,  G01R19/00 ,  G01R19/0092 ,  H01F38/28

摘要： A sensor device for use in detecting current in a conductor is provided. The sensor includes a non-magnetic substrate defining an aperture structured to receive a conductor therein, a coil comprising a plurality of turns wound about at least a portion of the substrate, and a housing for enclosing the substrate and coil. The housing includes a dielectric material having a dielectric constant and positioned adjacent to the coil and at least partially within the aperture such that the dielectric material is disposed between the coil and the conductor when the conductor is received through the aperture and at least one spacer coupled to the aperture to facilitate maintaining a position of the coil relative to the conductor, wherein each of the spacers is positioned offset from the dielectric material such that each of the spacers does not radially extend between the coil and the conductor.

公开(公告)号：US09472337B2

公开(公告)日：2016-10-18

申请号：US14111106

申请日：2012-04-12

申请人： Steven A. Shaw ,  Jashbhai S. Patel

发明人： Steven A. Shaw ,  Jashbhai S. Patel

IPC分类号： H01F27/32 ,  H01F27/36 ,  G01V3/10 ,  H01F38/20 ,  H01F17/06 ,  H01F38/28 ,  H01F41/00 ,  H01F38/34

CPC分类号： H01F27/362 ,  H01F38/20 ,  H01F38/28 ,  H01F38/34 ,  H01F41/00 ,  Y10T29/49073

摘要： An electrostatic shield for controlling the electrostatic field between a high voltage conductor and a low voltage conductor in an instrument transformer is provided. The instrument transformer has a current transformer and a voltage transformer. The current transformer has a split core which includes a first core segment and a second core segment. When the first core segment adjoins the second core segment, a current transformer is formed, having a core formed from the first and second core segments. The high voltage conductor runs between the first and second core segments of the current transformer. The first core segment is encapsulated in a polymer resin and when encapsulated, forms a first encasement. The second core segment has a low voltage winding mounted thereon. The electrostatic shield is disposed between the low voltage winding and the high voltage conductor. A second encasement is formed by encapsulating the electrostatic shield, low voltage winding and second core segment in a polymer resin.

摘要翻译： 提供了用于控制仪器变压器中的高压导体和低压导体之间的静电场的静电屏蔽。 仪表变压器有一个电流互感器和一个电压互感器。 电流互感器具有分开的芯，其包括第一芯部段和第二芯部段。 当第一芯段与第二芯段相邻时，形成具有由第一和第二芯段形成的芯的电流互感器。 高压导体在电流互感器的第一和第二芯段之间延伸。 第一核心部分被封装在聚合物树脂中，并且当被包封时，形成第一包装。 第二芯段具有安装在其上的低电压绕组。 静电屏蔽设置在低压绕组和高压导体之间。 通过将静电屏蔽，低压绕组和第二芯段封装在聚合物树脂中来形成第二包装。

公开(公告)号：US20140361761A1

公开(公告)日：2014-12-11

申请号：US14470110

申请日：2014-08-27

申请人： MICHAEL P. VANGOOL ,  GEOFFREY J. BAKER

发明人： MICHAEL P. VANGOOL ,  GEOFFREY J. BAKER

IPC分类号： H01F38/28

CPC分类号： H01F38/28 ,  H01F38/32 ,  H01F2038/305

摘要： A method for processing output from a current transformer comprising deriving signal data from the output; converting the signal data from analog to digital format; removing a carrier signal from the signal data; squaring the signal data; and performing a recursive RMS algorithm on the signal data.

摘要翻译： 一种用于处理来自电流互感器的输出的方法，包括从所述输出导出信号数据; 将信号数据从模拟转换成数字格式; 从所述信号数据中去除载波信号; 平均信号数据; 并对信号数据执行递归RMS算法。

公开(公告)号：US08847573B2

公开(公告)日：2014-09-30

申请号：US13474814

申请日：2012-05-18

申请人： Michael P. Vangool ,  Geoffrey J. Baker

发明人： Michael P. Vangool ,  Geoffrey J. Baker

IPC分类号： H01F38/28 ,  H01F38/32 ,  H01F38/30

CPC分类号： H01F38/28 ,  H01F38/32 ,  H01F2038/305

摘要： A single-coil, toroid-type current transformer circuit for detecting both AC and DC current. The current transformer circuit may include a current transformer and an oscillator electrically connected to the current transformer. The current transformer circuit may further include an open and short CT detection circuit electrically connected to the oscillator for facilitating determination of the connection and stability state of the current transformer. A processor may be electrically connected to an output of the open and short CT detection circuit for performing a series of operations on signal data generated by the open and short CT detection circuit and manipulating the operation of an electrical power system accordingly.

摘要翻译： 用于检测交流和直流电流的单线圈，环形电流互感器电路。 电流互感器电路可以包括电流互感器和电连接到电流互感器的振荡器。 电流互感器电路还可以包括电连接到振荡器的开路和短路CT检测电路，以便于确定电流互感器的连接和稳定状态。 处理器可以电连接到开路和短路CT检测电路的输出，以对由开放和短路CT检测电路产生的信号数据执行一系列操作，并相应地操纵电力系统的操作。

公开(公告)号：US20140125441A1

公开(公告)日：2014-05-08

申请号：US14111543

申请日：2012-04-13

申请人： Yin Hongping ,  Qian Jinhua ,  Yang Yuzhu

发明人： Yin Hongping ,  Qian Jinhua ,  Yang Yuzhu

IPC分类号： H01F27/28 ,  H01F41/04

CPC分类号： H01F27/2852 ,  G01R15/183 ,  G01R21/06 ,  H01F38/28 ,  H01F41/04 ,  Y10T29/4902

摘要： Disclosed is a large-current transformer for an electronic round power meter, including a current sampling coil (2) and a current stick (1), where the current stick is a slotted stick, a middle section of the slotted stick is sleeved with the current sampling coil, inner slots at two ends of the slotted stick are inlaid with a first current insert (8) and a second current insert (10) respectively. The current transformer is easy to mount, has a reliable connection, a low temperature increase, high precision, and a low cost. A method of making the large-current transformer for an electronic round power meter includes: stamping a copper sheet into a flat current connector and a U-shaped current stick; where the U-shaped current stick passes through an inner hole of the current sampling coil, the flat current connector is inserted into inner slots at two ends of the U-shaped current stick, and the flat current connector is riveted firmly with the U-shaped current stick by means of riveting or spot welding. The method has fewer processes, high efficiency, and is suitable for large-batch production.

摘要翻译： 公开了一种用于电子圆形功率计的大电流互感器，包括电流采样线圈（2）和电流棒（1），其中当前棒是开槽棒，开槽棒的中间部分与 电流采样线圈，开槽棒的两端的内槽分别与第一电流插入件（8）和第二电流插入件（10）嵌入。 电流互感器易于安装，连接可靠，温升低，精度高，成本低。 制造电子圆形功率计的大电流互感器的方法包括：将铜片冲压成扁平电流连接器和U形电流棒; 其中U形电流棒通过电流采样线圈的内孔，扁平电流连接器插入到U形电流棒的两端的内槽中，扁平电流连接器牢固地铆接在U形电流棒上， 通过铆接或点焊来形成电流棒。 该方法工艺较少，效率高，适合大批量生产。

公开(公告)号：US20130200971A1

公开(公告)日：2013-08-08

申请号：US13366887

申请日：2012-02-06

申请人： Nathaniel Wood Crutcher ,  Gerald Anthony Hannam ,  Samuel F.E. Davenport

发明人： Nathaniel Wood Crutcher ,  Gerald Anthony Hannam ,  Samuel F.E. Davenport

IPC分类号： H01F27/02 ,  H01F41/00

CPC分类号： H01F27/24 ,  H01F38/28

摘要： A split-core current transformer core comprises a U-core section in combination with a closing-bar core section that has extra length, width, and cross-sectional area as compared to the U-core section, shielding above and below secondary windings wound on bobbins that are mounted around leg portions of the U-core section and extending at least partially along a yoke portion of the core that joins the leg portions of the core, unitary construction and assemblage that accommodates calibration of output signals after assembly of the components in a base module and cover module that is hinged to the base module and has squeeze latches formed in a unitary manner with the cover housing such that they do not require assembly and do not protrude outwardly from adjacent surfaces in either open or closed mode, and other features that minimize magnetic reluctance and increase clearance and creepage distances.

摘要翻译： 分芯式电流互感器芯包括与U型芯部分相比具有额外的长度，宽度和横截面面积的封闭棒芯部分的U型芯部分，在绕组上方和下方的屏蔽层 在绕在U型芯部分的腿部上的线轴上，并且至少部分地沿着连接芯部的腿部的芯部的轭部延伸的整体构造和组合，其在组件之后适应输出信号的校准 在与基座模块铰接的基座模块和盖模块中，并且具有与盖壳体整体形成的挤压闩锁，使得它们不需要组装，并且不以相对于打开或关闭模式向外突出，并且 其他特点使磁阻减小，增加间隙和爬电距离。