公开(公告)号：US20140307353A1

公开(公告)日：2014-10-16

申请号：US14035188

申请日：2013-09-24

申请人： EATON CORPORATION

发明人： VINCENT FERRI ,  GARRY B. THEADORE ,  TODD M. LATHROP

IPC分类号： H02H3/32

CPC分类号： H02H3/325 ,  G01R31/025 ,  H02H3/338 ,  H02H5/105

摘要： A power system is for a facility. The power system includes a load panel powered from a split phase electrical distribution configuration having a first line, a second line and a neutral. A two-pole circuit interrupter in the load panel receives power from the first line, the second line and the neutral, and protects an unbalanced load. The two-pole circuit interrupter is structured to trip open or open responsive to an input. A circuit in the load panel is structured to determine that the neutral is broken or missing and responsively output to the input to cause the two-pole circuit interrupter to trip open or open.

摘要翻译： 电力系统用于设施。 电力系统包括由具有第一线，第二线和中线的分相配电构造供电的负载面板。 负载面板中的两极断路器从第一线路，第二线路和空档接收电力，并保护不平衡负载。 双极电路断路器被构造为响应于输入而断开或断开。 负载面板中的电路被构造成确定空档断开或丢失，并且响应地输出到输入端，以使两极断路器跳闸打开或断开。

公开(公告)号：US08779776B2

公开(公告)日：2014-07-15

申请号：US12312628

申请日：2007-11-23

申请人： Karl Nathan Edwards

发明人： Karl Nathan Edwards

IPC分类号： G01R31/02 ,  H02H3/32 ,  G01R31/04 ,  H02H3/38 ,  H02H11/00 ,  H01H83/14 ,  H02H5/10

CPC分类号： G01R31/42 ,  G01R31/021 ,  G01R31/024 ,  G01R31/025 ,  G01R31/04 ,  G01R31/041 ,  H01H83/14 ,  H02H3/32 ,  H02H3/38 ,  H02H3/50 ,  H02H5/105 ,  H02H11/001 ,  H02H11/002 ,  H02H11/005

摘要： A method for detecting predetermined fault conditions associated with the supply of AC electrical power to a consumer, the supply having an active conductor and a neutral conductor with the neutral conductor being connected to earth. The method comprises providing a first current detector associated with the active conductor, providing a second current detector associated with the neutral conductor; providing a voltage detector to detect voltage between the active conductor and the neutral conductor, and checking a current ratio of neutral current to active current whereby the current ratio is indicative of a predetermined fault condition. Also disclosed is a method of checking the condition of supply line active and neutral conductors in a consumer's supplied premises including determining the impedance of the active conductor and the impedance of the neutral conductor to indicate the condition of each of the active and neutral conductors.

摘要翻译： 用于检测与向消费者提供AC电力相关联的预定故障状况的方法，所述电源具有有源导体和中性导体，所述中性导体连接到地球。 该方法包括提供与有源导体相关联的第一电流检测器，提供与中性导体相关联的第二电流检测器; 提供电压检测器来检测有源导体和中性导体之间的电压，并且检查中性点电流与有功电流的电流比，由此电流比指示预定的故障状态。 还公开了一种检查消费者提供的场所中供电线有源和中性导体的状况的方法，包括确定有源导体的阻抗和中性导体的阻抗，以指示每个有源和中性导体的状态。

公开(公告)号：US20070086124A1

公开(公告)日：2007-04-19

申请号：US11253193

申请日：2005-10-18

申请人： Robert Elms ,  Kevin Parker

发明人： Robert Elms ,  Kevin Parker

IPC分类号： H02H9/08 ,  H02H3/32 ,  H01H9/56

CPC分类号： H02H1/0015 ,  H02H1/043

摘要： An arc fault circuit interrupter includes a line terminal, a load terminal, separable contacts electrically connected between the line terminal and the load terminal, and a current sensor structured to sense current associated with the load and flowing between the line terminal and the load terminal and through the separable contacts. The sensed current includes a plurality of line cycles. An arc fault detection circuit is structured to provide series arc protection and to generate a trip signal responsive to the sensed current from the current sensor. The arc fault detection circuit collects a plurality of samples of the sensed current over the line cycles, determines a single current transient associated with energization of the load, and responsively inhibits the series arc protection. An operating mechanism is structured to open the separable contacts responsive to the trip signal.

摘要翻译： 电弧故障断路器包括线路端子，负载端子，电连接在线路端子和负载端子之间的可分离触点，以及电流传感器，其被构造为感测与负载相关联的电流并且在线路端子和负载端子之间流动; 通过可分离的接触。 感测的电流包括多个线路周期。 电弧故障检测电路被构造成提供串联电弧保护并且响应于来自电流传感器的感测电流产生跳闸信号。 电弧故障检测电路通过线路周期收集感测电流的多个采样，确定与负载通电相关联的单个电流瞬变，并响应地抑制串联电弧保护。 操作机构构造成响应于跳闸信号而打开可分离的触点。

公开(公告)号：US5777868A

公开(公告)日：1998-07-07

申请号：US847345

申请日：1997-04-24

申请人： James W. Gibboney, Jr.

发明人： James W. Gibboney, Jr.

IPC分类号： F21S4/00 ,  H01R13/66 ,  H02H3/32 ,  H02H9/02 ,  H02H9/04 ,  H02M7/00 ,  H02M7/06 ,  H05B37/03 ,  H05B39/02 ,  H02M1/00 ,  H02H1/125

CPC分类号： H05B39/02 ,  F21S4/10 ,  H01R13/6675 ,  H02H9/02 ,  H02H9/04 ,  H01R2103/00 ,  H01R24/28 ,  H02H3/32

摘要： A plug is diclosed that is adapted to be inserted into a standard electrical outlet and has a built-in integrated circuit for rectifying the alternating current received from the outlet and limiting the direct current produced. The plug is specifically suited for low-current, low-voltage applications such as supplying DC to a string of ornamental lights. The integrated circuit has a diode with a modified cathode that acts as a fuse as it is rectifying the alternating current. The cathode is formed of a plurality of electrically parallel conductors. Excessive current blows out at least some of these conductors in the same way a conventional fuse blows. Various embodiments add other current-limiting elements, elements for producing full wave or near full wave rectification, and for opening the circuit when they detect extraneous currents.

摘要翻译： 插头被连接，适于插入标准电源插座，并具有内置的集成电路，用于整流从插座接收的交流电流并限制所产生的直流电流。 该插头特别适用于低电流，低电压应用，例如将DC提供给一串装饰灯。 该集成电路具有二极管，其具有修正的阴极，其在整流交流电时用作熔丝。 阴极由多个电平行导体形成。 过多的电流以与常规保险丝相同的方式吹出至少一些这些导体。 各种实施例增加了其他限流元件，用于产生全波或近全波整流的元件，以及当它们检测到外部电流时打开电路。

公开(公告)号：US5375026A

公开(公告)日：1994-12-20

申请号：US998725

申请日：1992-12-30

申请人： Leif Eriksson ,  Murari M. Saha

发明人： Leif Eriksson ,  Murari M. Saha

IPC分类号： H02H1/04 ,  H02H3/26 ,  H02H3/32

CPC分类号： H02H3/26 ,  H02H1/04

摘要： A method and a device for preventing overstabilization of longitudinal differential protections in case of internal faults on power lines, which may take place when a fault situation, which is indicated as an external faults, is in reality an internal fault. The invention comprises criteria which finally provide information as to whether the longitudinal differential protection is to enter into operation. The criteria comprise level and directional determination of the currents which are measured in the terminals of the power lines, checking whether these have the same direction, and so on.

摘要翻译： 一种用于防止在电力线路内部故障的情况下纵向差动保护的过度稳定的方法和装置，当作为外部故障指示的故障情况实际上是内部故障时，这可能发生。 本发明包括最终提供关于纵向差动保护是否投入运行的信息的标准。 标准包括在电力线的端子中测量的电流的电平和方向确定，检查这些电流是否具有相同的方向等等。

公开(公告)号：US4358809A

公开(公告)日：1982-11-09

申请号：US262283

申请日：1981-05-11

申请人： Huibert Blok

发明人： Huibert Blok

IPC分类号： H02H3/32 ,  H02H7/26 ,  H02J1/00 ,  H02H3/16

CPC分类号： H02H7/267 ,  H02H3/32

摘要： A personnel protection circuit for electrical supply systems comprises a normally closed switch connected between a source of electric power and a load. Two parallel conductors are connected between the switch and the load, and include a control circuit having a current unbalance detector for detecting current unbalance between the two conductors. Upon detection of such current unbalance, the normally closed switch is opened thereby disconnecting the electrical supply. Such control circuit devices may be included in both lines of the electrical supply system between the source and the load, or alternatively, further control circuit devices may be provided at both the source end and the load end of the parallel conductors.

摘要翻译： 用于供电系统的人员保护电路包括连接在电源和负载之间的常闭开关。 两个并联导体连接在开关和负载之间，并且包括具有用于检测两个导体之间的电流不平衡的电流不平衡检测器的控制电路。 当检测到这种电流不平衡时，常闭开关断开，从而断开电源。 这样的控制电路装置可以包括在源和负载之间的供电系统的两条线中，或者可以在并行导体的源极端和负载端两者处设置另外的控制电路装置。

公开(公告)号：US20240039396A1

公开(公告)日：2024-02-01

申请号：US18161081

申请日：2023-01-29

申请人： POWERTECH INDUSTRIAL CO., LTD.

发明人： CHIH-YUN LIN ,  CHIH-HSING CHEN

IPC分类号： H02M1/34 ,  H02H3/32 ,  H02J3/01

CPC分类号： H02M1/34 ,  H02H3/32 ,  H02J3/01

摘要： A surge protecting circuit is provided. A first stage filter circuit is connected to an alternating current (AC) source. A surge detection driver circuit is connected to a first stage filter circuit. A first snubber circuit is connected to the AC source. A first terminal of a first power switch is connected to the first snubber circuit. A control terminal of the first power switch is connected to the surge detection driver circuit. A first terminal of a second power switch is connected to a second snubber circuit. A second terminal of the second power switch is connected to an output terminal of the surge protecting circuit. A control terminal of the second power switch is connected to the surge detection driver circuit. A multi-stage filter circuit is connected to a second terminal of the first power switch and the second snubber circuit.

公开(公告)号：US11703549B2

公开(公告)日：2023-07-18

申请号：US16863308

申请日：2020-04-30

申请人： Sunny Bagga ,  Brian J. Cadwell ,  Shaun Mark Goodwin

发明人： Sunny Bagga ,  Brian J. Cadwell ,  Shaun Mark Goodwin

IPC分类号： G01R31/52 ,  G01R31/28 ,  G01R31/3193 ,  H02H3/32 ,  H02H3/16 ,  G01R31/319 ,  G01R31/08

CPC分类号： G01R31/52 ,  G01R31/083 ,  G01R31/2834 ,  G01R31/31905 ,  G01R31/31932 ,  H02H3/16 ,  H02H3/32

摘要： A ground fault detection circuit can include a band-pass filter that can have a first node and a second node that can be coupled to an earth ground. The first node can be coupled to a local ground of an automatic test equipment (ATE) system for an electrical device that can be coupled via at least one wire to the ATE. The band-pass filter can be configured to pass and amplify a test current signal established at the first node in response to a coupling of one of a conductor of the at least one wire carrying the test current signal to the local ground, and a conductive element of the electrical device carrying the test current signal to the local ground. A fault alert signal can be provided to provide an indication of ground fault based on a comparison of the amplified test current signal.

公开(公告)号：US20230209659A1

公开(公告)日：2023-06-29

申请号：US18176160

申请日：2023-02-28

申请人： Weber-Stephen Products LLC

发明人： Eric Knappenberger ,  Julio C. Zuleta ,  Matthew Lerch ,  Jeffery C. Emmerich

IPC分类号： H05B1/02 ,  A47J37/07 ,  A47J37/06 ,  H02H3/16 ,  H02H3/10 ,  H02H3/32 ,  H02H1/00 ,  H02H3/08

CPC分类号： H05B1/0266 ,  A47J37/0709 ,  A47J37/0676 ,  H05B1/0261 ,  H02H3/167 ,  H02H3/105 ,  H02H3/32 ,  A47J37/07 ,  H02H1/0007 ,  H02H3/08 ,  H02H3/04

摘要： Provided is an apparatus and method for protecting against unsafe electric current conditions. A protections circuit may be used in a device, such as an electric grill, that has one or more electric loads, such as heating elements. The protection circuit may protect against various failure scenarios, including, without limitation, instances of ground fault, over current, driver failure, and failure of a microprocessor. In response to a failure, the protection circuit may trip a latch relay or disable a triac driver to stop current from flowing.

公开(公告)号：US11562864B2

公开(公告)日：2023-01-24

申请号：US16979339

申请日：2019-07-04

申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.

发明人： Yuichi Kuramochi ,  Hidefumi Ishimoto ,  Akiyoshi Kirimura

IPC分类号： H02P8/04 ,  H02H3/32 ,  H01H3/02 ,  B60W50/00 ,  H01H83/16 ,  H02H1/00 ,  H02H3/04

摘要： A safety switch input diagnosis device includes a circuit formed from a series connection of an emergency stop switch and a line having a resistor. A connection state of the emergency stop switch and failure modes of the lines are diagnosed on the basis of a voltage value at one end of the circuit. Consequently, an operation of the switch and failure modes of a circuit relating to the switch can be diagnosed.