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51. 发明授权

US1587841A Testing system 失效
公开(公告)号：US1587841A
公开(公告)日：1926-06-08
申请号：US1603025
申请日：1925-03-16
申请人： KNOPP OTTO A
发明人： KNOPP OTTO A
IPC分类号： H01F27/42 , H01F38/32
CPC分类号： H01F38/32 , H01F27/427

52. 发明申请

US20200176931A1 IMPROVEMENTS IN OR RELATING TO PROTECTION RELAYS 审中-公开
公开(公告)号：US20200176931A1
公开(公告)日：2020-06-04
申请号：US16612244
申请日：2018-04-23
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： Timothy Fawcett , Simon Kidd , Paul Aston
IPC分类号： H01R13/645 , H02H3/38 , H05K1/11 , H01R12/72 , H01F38/32
摘要： A protection relay connection assembly (10) for connecting a current transformer (14) and/or a voltage transformer (16) of an electrical network (12) to a protection relay (18) is provided. The protection relay connection assembly (10) includes a protection relay data acquisition board (20) and a protection relay connector (22). The protection relay data acquisition board (20) includes a first current mating member (24) connectable to a current measurement sensor (28), the current measurement sensor (28) being connectable in use to the protection relay (18) and/or a first voltage mating member (26) connectable to a voltage measurement sensor (30), the voltage measurement sensor (30) being connectable in use to the protection relay (18). The protection relay connector (22) includes a second current mating member (36) connectable to the current transformer (14) and/or a second voltage mating member (38) connectable to the voltage transformer (16). The first current mating member (24) and the second current mating member (36) are selectively mateable with one another to permit a measured current waveform of the electrical network (12) to be transmitted from the current transformer (14) to the protection relay (18). The first voltage mating member (26) and the second voltage mating member (38) are shaped to be selectively mateable with one another to permit a measured voltage waveform of the electrical network (12) to be transmitted from the voltage transformer (16) to the protection relay (18). Wherein the first current mating member (24) is shaped to prevent mating of the first current mating member (24) with the second voltage mating member (38), and the first voltage mating member (26) is shaped to prevent mating of the first voltage mating member (26) with the second current mating member (36).

53. 发明授权

US10591514B2 Current measuring device protected against electrical surges when opening the circuit 有权
公开(公告)号：US10591514B2
公开(公告)日：2020-03-17
申请号：US16071718
申请日：2017-01-09
申请人： SAFRAN ELECTRICAL & POWER
发明人： Pierre Henri Henrard
IPC分类号： G01R15/18 , G01R1/36 , H01F38/28 , H01F38/30 , H01F38/32 , G01R31/00
摘要： A current measuring device is protected against electrical surges in the event of the device being open circuit. The device includes a first current transformer, a first connection terminal having connected thereto a first terminal of the first current transformer, a second connection terminal having connected thereto a second terminal of the first current transformer, a protective resistance having a first terminal connected to the second connection terminal, and a load resistance connected between the first and second connection terminals across the terminals of which a voltage is measured from which the current flowing in a circuit passing through the first current transformer is determined. The device also includes a second current transformer connected to the terminals of the protective resistance, and current branch connection structure connected between the first connection terminal and a second terminal of the protective resistance.

54. 发明申请

US20200051738A1 Current Transformer with Current Branches on Primary Conductor 审中-公开
公开(公告)号：US20200051738A1
公开(公告)日：2020-02-13
申请号：US16606750
申请日：2017-04-19
申请人： Narayan Powertech Pvt. Ltd.
发明人： Chirag Shah , Chetas Parikh
IPC分类号： H01F38/30 , H01F38/32
摘要： Embodiments described herein comprise a current transformer having a primary winding with multiple primary parallel branches that divide the primary current, and a secondary winding which is placed in any one, or more, branches. The current thus divided in the primary branches produces an alternating magnetic flux which induces alternating current in the secondary winding for an end user application. The invention disclosed herein reduces the weight and size of the current transformer drastically compared to the existing conventional current transformers.

55. 发明授权

US10389261B2 Portable electrical generator system for providing temporary distribution of single-phase and three-phase power 有权
公开(公告)号：US10389261B2
公开(公告)日：2019-08-20
申请号：US15360345
申请日：2016-11-23
申请人： VMC Power Systems
发明人： Mark C. McCartney , Nicolas V. Valente
IPC分类号： H01F27/02 , H02M5/12 , H01F30/10 , H01F38/24 , H01F38/32 , H01F27/00 , F02B63/04
摘要： A portable generator system is used to provide temporary electrical power. The portable generator system has a vehicle, a generator, a step-up system, and a output interface. The step up system has one or more transformers for stepping up a voltage of the generator to a distribution voltage.

56. 发明申请

US20190156998A1 CURRENT TRANSFORMER MODULE AND POWER SUPPLY DEVICE INCLUDING THE SAME 审中-公开
公开(公告)号：US20190156998A1
公开(公告)日：2019-05-23
申请号：US16322622
申请日：2017-08-04
申请人： AMOSENSE CO.,LTD
发明人： Jin-Pyo PARK , Won-San NA , Cheol-Seung HAN
IPC分类号： H01F38/14 , H02J50/10 , H01F38/30 , H01F38/32 , H02M7/06 , H01F27/42 , H01F27/40 , H01F27/28
摘要： A power supply device includes a current transformer module capable of adjusting a power induction ratio in order to induce a certain power even when the current of a power line is changed and the current transformer module capable of minimizing the loss in power conversion while providing a certain power even when the current of the power line is changed. The disclosed current transformer module includes a magnetic core constituting a closed loop, a plurality of unit coils wound around the magnetic core, and a switch unit connected to the plurality of unit coils, and the plurality of unit coils include a plurality of unit coils for power-generation.

57. 发明授权

US10276301B2 Current transformer and direct current source based on current transformer 有权
公开(公告)号：US10276301B2
公开(公告)日：2019-04-30
申请号：US15708186
申请日：2017-09-19
申请人： Siemens Aktiengesellschaft
发明人： Feng Du , Wei Gang Chen , Yue Zhuo
IPC分类号： H01F38/28 , H01F38/30 , H01F38/32 , H03H7/01 , H03H7/09 , H02M1/00
摘要： A current transformer and a direct current source based on a current transformer are disclosed. In an embodiment, the current transformer includes two output ends; a first winding and a second winding connected in series between the two output ends; a main core; a bypass core, arranged to be magnetically coupled with the main core. The first winding is wound on a part of the main core and a part of the bypass core, and the second winding is wound on apart of the bypass core. In an embodiment, the current transformer also includes a high-frequency bypass, connected in parallel with the first winding, and used to filter a high-frequency signal. The high-frequency bypass provides a low-impedance path for a high-frequency signal in a primary conductor under measurement, such that the bypass core with the second winding presents less obstruction to the main core, thereby reducing heating.

58. 发明授权

US09935406B2 Plug 有权
公开(公告)号：US09935406B2
公开(公告)日：2018-04-03
申请号：US15505848
申请日：2015-10-05
申请人： HARTING ELECTRIC GMBH & CO. KG
发明人： Andreas Nass , Hanno Harry Wolff
IPC分类号： H01R13/66 , H01F38/32
CPC分类号： H01R13/6666 , H01F38/32 , H01R13/703 , H01R13/7132
摘要： Provided is a plug for use as a disconnector for current transformers. Two types of short circuits are provided in the plug. A first short circuit is used for diverting overvoltages by short-circuiting the electrical contacts in the plug. A second short circuit is provided for short-circuiting electrical contacts in the plug when the plug is not contacted. The short circuits are designed in such a way that the first short circuit is used as a fuse when the second short circuit fails.

59. 发明申请

US20180076616A1 POWER CABLE ASSEMBLY HAVING A CIRCUIT PROTECTION DEVICE 审中-公开
公开(公告)号：US20180076616A1
公开(公告)日：2018-03-15
申请号：US15265989
申请日：2016-09-15
申请人： TYCO ELECTRONICS CORPORATION
发明人： Roger Lee Thrush , Sean Delaney O'Brien , Thomas Michael Banas
IPC分类号： H02H7/26 , G01R31/02 , H01F38/32 , H01H47/22 , H05K5/02 , B60L11/18
CPC分类号： H02H7/26 , B60L11/1818 , B60L2230/12 , G01R31/025 , H01F38/32 , H01H9/0228 , H01H47/223 , H01H83/04 , H01H83/144 , H05K5/0247
摘要： A power cable assembly includes a power cable extending between a first end and a second end having a hot conductor and a neutral conductor. The power cable assembly includes a circuit protection device along the power cable between the first and second ends. The circuit protection device has a ground fault circuit interrupt (GFCI) device configured to sense a current difference on the hot and neutral conductors to initiate a triggering event. The circuit protection device has a high-power relay device connected to the GFCI device. The high-power relay device is connected to the hot conductor and is configured to open the hot line when the triggering event is initiated by the GFCI device.

60. 发明授权

US09689901B2 Apparatus and methods thereof for power consumption measurement at circuit breaker points 有权
公开(公告)号：US09689901B2
公开(公告)日：2017-06-27
申请号：US15081666
申请日：2016-03-25
申请人： Panoramic Power Ltd.
发明人： Adi Shamir , Dan Wijsboom , David Almagor
IPC分类号： G01R15/18 , G01R22/06 , H02M3/158 , G01R21/06 , H01F38/32 , H01F38/38
CPC分类号： G01R15/183 , G01R15/186 , G01R21/06 , G01R22/063 , H01F38/32 , H01F38/38 , H02M3/1582
摘要： Apparatus and methods are provided for the measurement of power consumption at points of interest, such as circuit breakers, machines, and the like. Accordingly, means are provided for measurement of power consumption for each electrical sub-network that is controlled by a circuit breaker. Each apparatus is enabled to communicate its respective data, in an environment of a plurality of such apparatuses, to a management unit which is enabled to provide finer granularity power consumption profiles. Challenges of measuring relatively low supply currents, wireless operation in an environment of a large number of apparatuses, and self-powering are addressed.

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