公开(公告)号：US09384928B2

公开(公告)日：2016-07-05

申请号：US13657144

申请日：2012-10-22

申请人： EATON CORPORATION

发明人： Xin Zhou ,  James Leo Lagree ,  William E. Beatty

IPC分类号： H01H35/00 ,  H01H83/00 ,  H02H3/00 ,  H01H71/08 ,  H01H71/12 ,  G06F19/00 ,  H02H3/44 ,  G06F1/26

CPC分类号： H01H71/08 ,  G06F1/266 ,  G06F19/00 ,  H01H71/123 ,  H02H3/44

摘要： An electrical switching apparatus includes a transductor circuit that senses a direct current between at least one input terminal and at least one output terminal and outputs an alternating current proportional to the direct current between the input terminal and the output terminal. The electrical switching apparatus also includes an alternating current electronic trip circuit configured to control pairs of separable contacts to separate based on the alternating current output from the transductor circuit.

摘要翻译： 一种电气开关装置，包括：感测至少一个输入端子与至少一个输出端子之间的直流电流的输出电路，并输出与输入端子与输出端子之间的直流电流成正比的交流电流。 电气开关装置还包括交流电子跳闸电路，其被配置为基于从变压器电路输出的交流电流来控制成对的可分离触点。

公开(公告)号：US20160172840A1

公开(公告)日：2016-06-16

申请号：US14570036

申请日：2014-12-15

申请人： EATON CORPORATION

发明人： CHARLES JOHN LUEBKE ,  BIRGER PAHL ,  STEVEN CHRISTOPHER SCHMALZ

IPC分类号： H02H3/20

CPC分类号： H02H3/207 ,  H02H1/0015 ,  H02H3/08 ,  H02H3/16 ,  H02H3/20 ,  H02H3/22 ,  H02H3/24 ,  H02H3/44 ,  H02H3/46 ,  H02H3/50

摘要： An electrical device includes a first terminal structured to electrically connect to a power source; a second terminal structured to electrically connect to a load; a voltage sensor electrically connected to a point between the first and second terminals and being structured to sense a voltage at the point between the first and second terminals; a switch electrically connected between the first terminal and the second terminal; and a control unit structured to detect a power quality event in the power flowing between the first and second terminals based on the sensed voltage and to control a state of the switch based on the detected power quality event.

摘要翻译： 电气装置包括被构造为电连接到电源的第一端子; 构造为电连接到负载的第二端子; 电压传感器电连接到第一和第二端子之间的点，并被构造为感测第一和第二端子之间的点处的电压; 电连接在第一端子和第二端子之间的开关; 以及控制单元，其被构造为基于所感测的电压来检测在所述第一和第二端子之间流动的功率中的电力质量事件，并且基于检测到的电力质量事件来控制所述开关的状态。

公开(公告)号：US20150280427A1

公开(公告)日：2015-10-01

申请号：US14688328

申请日：2015-04-16

申请人： ABB TECHNOLOGY AG

发明人： Karl-Heinz HARTUNG ,  Ralf BOCKHOLT ,  Volker GRAFE

IPC分类号： H02H9/02

CPC分类号： H02H9/02 ,  H02H3/08 ,  H02H3/083 ,  H02H3/44 ,  H02H7/042 ,  H02H7/267 ,  H02H7/28

摘要： An exemplary electrical network in form of a ring system includes a plurality of infeed transformers which are arranged in parallel between a sourcing busbar/cable system and a ring load busbar/cable system. A junction point connects each infeed transformer to the ring load busbar/cable system. The network includes a plurality of current limiters, where each current limiter is positioned between two junction points. Upon a fault event of an infeed transformer, two current limiters on both sides of a respective junction point of the faulted infeed transformer are simultaneously tripped in order to reduce current in the ring load busbar/cable system.

摘要翻译： 形式为环形系统的示例性电气网络包括多个进给变压器，其并联设置在源极母线/电缆系统和环形负载母线/电缆系统之间。 连接点将每个进料变压器连接到环形负载母线/电缆系统。 网络包括多个电流限制器，其中每个限流器位于两个连接点之间。 在进给变压器的故障事件中，故障进给变压器的相应接合点两侧的两个限流器同时跳闸，以减少环形负载母线/电缆系统中的电流。

公开(公告)号：US20150239086A1

公开(公告)日：2015-08-27

申请号：US14544842

申请日：2015-02-24

申请人： Chao-Ying LEE

发明人： Chao-Ying LEE

IPC分类号： B23Q11/00 ,  G05B11/01 ,  H02H1/00

CPC分类号： B23Q11/0092 ,  B23D47/00 ,  B23D59/001 ,  B23D59/008 ,  B23Q11/06 ,  G05B19/0428 ,  G05B2219/24011 ,  G05B2219/24024 ,  G05B2219/45144 ,  H02H3/105 ,  H02H3/44 ,  Y02B70/3241 ,  Y04S20/227 ,  Y10T83/081

摘要： An electrical power safety system includes a system body having a user control terminal for receiving operational parameters for a power saw machine, a power management system including a control processor which is pre-programmed to manage the operation parameter communicating with the power saw machine and is used to generate an operation information, and a user interface, preferably connected to a display, for promptly and accurately communicating the operation information to an user on a real time basis. The system is capable of monitoring an operation task of the power saw machine, together with any accessory devices connected therewith, and providing a power supply in a usable form from any kind of power source to the power saw machine and the accessory devices. The system further includes a power control arrangement through which the speed of the power saw is controlled for convenience operation equipped with safety measures.

摘要翻译： 电力安全系统包括具有用于接收电动锯机的操作参数的用户控制终端的系统主体，包括控制处理器的电源管理系统，该控制处理器被预先编程以管理与电动锯机进行通信的操作参数，并且是 用于生成操作信息，以及优选地连接到显示器的用户界面，用于实时地将操作信息快速地传送给用户。 该系统能够监视电动锯机的操作任务以及与其连接的任何附件装置，并且从任何种类的电源向电动锯机和附件装置提供可用形式的电源。 该系统还包括功率控制装置，通过该功率控制装置控制电动锯的速度以便于具有安全措施的便利操作。

公开(公告)号：US08963556B2

公开(公告)日：2015-02-24

申请号：US13873326

申请日：2013-04-30

申请人： Eaton Corporation

发明人： Santosh Kumar Sharma ,  Xin Zhou ,  Steven Andrew Dimino ,  Supriya Karnani ,  Snehal Kale ,  Rahul Choudhary ,  Debsubhra Chakraborty

IPC分类号： G01R31/08 ,  G01R31/02 ,  H02H3/33

CPC分类号： G01R31/024 ,  G01R31/026 ,  G01R31/088 ,  G01R31/343 ,  H02H3/33 ,  H02H3/44 ,  H02H5/10 ,  H02H7/228

摘要： A system and method for detecting excess voltage drop (EVD) in a three-phase electrical distribution circuit includes a diagnostic system comprising a processor that is programmed to receive three-phase voltages and currents provided to terminals of the electrical machine, determine fundamental components of the three-phase voltages and currents provided to the terminals, and compute positive, negative, and zero sequence currents from the fundamental components. The processor is also programmed to extract a compensated negative sequence current from the negative sequence current component, add the compensated negative sequence current to the positive sequence current to determine fault reference current phasors, determine a negative current reference phase angle for each phase based in part on a phase angle of the positive sequence current, and identify an EVD fault in the electrical distribution circuit based on the compensated negative sequence current, the fault reference current phasors, and the negative current reference phase angles.

摘要翻译： 用于检测三相配电电路中的过电压降（EVD）的系统和方法包括诊断系统，其包括被编程为接收提供给电机端子的三相电压和电流的处理器， 提供给端子的三相电压和电流，并从基本分量计算正，负和零序电流。 处理器还被编程为从负序电流分量提取补偿的负序电流，将补偿的负序电流加到正序电流以确定故障参考电流相量，部分地基于每个相确定负电流参考相位角 在正序电流的相位角上，基于补偿的负序电流，故障参考电流相量和负电流参考相位角来识别配电电路中的EVD故障。

公开(公告)号：US20150049407A1

公开(公告)日：2015-02-19

申请号：US14339852

申请日：2014-07-24

申请人： FUJITSU LIMITED

发明人： Ryo TANIMOTO ,  Takahiko YASUDA ,  Masato SOGA

IPC分类号： H02H3/44

CPC分类号： H02H3/44 ,  H04M1/18 ,  H04M1/72527

摘要： An electronic device includes a processor, and a connector used for connecting an external device to the electronic device, wherein the processor monitors fluctuation in a voltage at a specific terminal of the connector, and when the fluctuation in the voltage during a predetermined time period are not within a predetermined range, the processor electrically separates the connector.

摘要翻译： 电子设备包括处理器和用于将外部设备连接到电子设备的连接器，其中处理器监视连接器的特定端子处的电压波动，并且当预定时间段内的电压波动为 处理器不在预定范围内，电连接器分离。

公开(公告)号：US20140268461A1

公开(公告)日：2014-09-18

申请号：US14171609

申请日：2014-02-03

申请人： LSIS CO., LTD.

发明人： Young Woo JEONG

IPC分类号： H02H3/08

CPC分类号： H02H3/08 ,  H02H3/44 ,  H02H3/46

摘要： A control circuit for an electric power circuit switch includes: a sampling/hold circuit section configured to sample a period of a detection signal of a current of an electric power system and provide a sampled signal; a discrete Fourier transforming (abbreviated as DFT) circuit section perform DFT on the one-period sampled signal to provide a magnitude and a phase of a frequency component of the current of the electric power system; a differentiator configured to differentiate the detection signal to provide a rate of change of the current over time; and a controller to determine whether to perform trip controlling according to the magnitude of the frequency component of the current from the DFT circuit section or the rate of change from the differentiator on the basis of the rate of change of the current and the reference rate of change.

摘要翻译： 一种用于电力电路开关的控制电路，包括：取样/保持电路部分，被配置为对电力系统的电流的检测信号进行采样并提供采样信号; 离散傅立叶变换（简称DFT）电路部对一周期采样信号进行DFT，以提供电力系统的电流的频率分量的幅度和相位; 被配置为区分所述检测信号以提供电流随时间的变化率的微分器; 以及控制器，其根据电流的变化率和参考速率来确定是否根据来自DFT电路部分的电流的频率分量的大小或来自微分器的变化率来执行跳闸控制， 更改。

公开(公告)号：US08781637B2

公开(公告)日：2014-07-15

申请号：US13707842

申请日：2012-12-07

申请人： Voltserver Inc.

发明人： Stephen S. Eaves

IPC分类号： G05B11/01 ,  G05B9/02 ,  G06F19/00 ,  G05D3/12 ,  H02H3/00 ,  H02H7/122 ,  H02H7/26 ,  H02J3/12 ,  H02H3/40 ,  H02H3/44

CPC分类号： H02J3/12 ,  H02H3/40 ,  H02H3/44 ,  H02H7/261

摘要： A power distribution system (that can detect an unsafe fault condition where an individual or object has come in contact with the power conductors) regulates the transfer of energy from a source to a load. Periodically, the source controller opens an S1 disconnect switch, a and load controller opens an S2 disconnect switch. A capacitor represents the capacitance across the load terminals. If the capacitor discharges at a rate higher or lower than predetermined values after the S1 and S2 disconnect switches are opened, then a fault condition is registered, and the S1 and S2 switches will not be commanded to return to a closed position, thus isolating the fault from both the source and the load.

摘要翻译： 配电系统（可以检测到个体或物体与电力导体接触的不安全故障状况）调节了从源到负载的能量传递。 定期地，源控制器打开S1断开开关，负载控制器打开S2断开开关。 电容器表示负载端子上的电容。 如果在S1和S2断开开关断开之后，电容器以高于或低于预定值的速率放电，则注册故障状态，并且不会命令S1和S2开关返回到关闭位置，从而隔离 来自源和负载的故障。

公开(公告)号：US20140118001A1

公开(公告)日：2014-05-01

申请号：US14051269

申请日：2013-10-10

申请人： LSIS CO., LTD.

发明人： Seung Hyun BANG ,  Hae Yong PARK ,  Gyeong Ho LEE ,  Jung Wook SIM ,  Won Joon CHOE ,  Min Jee KIM

IPC分类号： G01R19/00

CPC分类号： H02H3/44 ,  H02H3/093 ,  H02H9/02

摘要： The fault current detecting circuit includes: a current detection unit that outputs a current detection signal; a first comparing circuit unit that compares the current detection signal with a predetermined reference current value and outputs a first output signal; a differentiator that differentiates the current detection signal to output a change slope of the current detection signal; a second comparing circuit unit that compares the change slope with a predetermined reference change slope value and outputs a second output signal; a third comparing circuit unit that compares the current detection signal with a predetermined current detection limit reference value and output a third output signal; and a trip determining unit that outputs a trip control signal only when the first output signal and the second output signal are maintained to be received and the third output signal is not received.

摘要翻译： 故障电流检测电路包括：电流检测单元，其输出电流检测信号; 第一比较电路单元，将电流检测信号与规定的基准电流值进行比较，并输出第一输出信号; 微分器，其区分电流检测信号以输出电流检测信号的变化斜率; 第二比较电路单元，其将所述变化斜率与预定的基准变化斜率值进行比较，并输出第二输出信号; 第三比较电路单元，其将所述电流检测信号与预定电流检测限参考值进行比较，并输出第三输出信号; 以及跳闸确定单元，仅在第一输出信号和第二输出信号保持被接收并且没有接收到第三输出信号时输出跳闸控制信号。

公开(公告)号：US20130265065A1

公开(公告)日：2013-10-10

申请号：US13440243

申请日：2012-04-05

申请人： JOHN J. SHEA

发明人： JOHN J. SHEA

IPC分类号： G01R27/08

CPC分类号： G01R31/04 ,  H02H3/44

摘要： A method detects a glowing contact in a power circuit. The method applies at least two different resistance values across the power circuit and responsively senses at least two voltages across the power circuit. Each of the at least two voltages correspond to one of the at least two different resistance values. Then, the method determines if a number of changes in the sensed at least two voltages with respect to a number of changes in the at least two different resistance values is linear within a predetermined range or if a change in two of the sensed at least two voltages does not increase with a decrease in two of the at least two different resistance values and, otherwise, responsively generates at least one of a trip signal and an alarm signal corresponding to detecting the glowing contact in the power circuit.

摘要翻译： 一种方法检测电源电路中的发光接触。 该方法在电源电路两端施加至少两个不同的电阻值，并响应于在电源电路两端的至少两个电压。 所述至少两个电压中的每一个对应于所述至少两个不同电阻值中的一个。 然后，该方法确定相对于至少两个不同电阻值中的变化数量的所感测的至少两个电压的变化数量是否在预定范围内是线性的，或者如果感测到的至少两个电压中的两个电压的变化 电压不随着至少两个不同电阻值中的两个的减小而增加，否则响应地产生对应于检测电源电路中的发光接点的跳闸信号和报警信号中的至少一个。