公开(公告)号：US20180166875A1

公开(公告)日：2018-06-14

申请号：US15836481

申请日：2017-12-08

Applicant: Southwire Company, LLC

Inventor： Donald Paul Oldham Jr. ,  Hamze Moussa

IPC: H02H3/33 ,  H02H3/20 ,  H02H5/10

CPC classification number: H02H3/338 ,  H02H3/20 ,  H02H5/10 ,  H02H5/105

Abstract: An apparatus for detecting an open neutral condition in a split phase power system is described. The apparatus includes two powered lines providing output electricity to an electrical distribution system and a shared neutral line providing a grounded neutral to the first and second powered lines. The apparatus is configured for detecting when an open neutral condition is present in the split phase power system by determining when a power current is present on one or both of the first and second powered lines while a return current is not present on the neutral line; and in response to detecting that the open neutral condition is present, causing an interrupter to interrupt the power supplied by the first and second powered lines or to generate a signal indicating an open condition.

公开(公告)号：US20170227593A1

公开(公告)日：2017-08-10

申请号：US15422937

申请日：2017-02-02

Applicant: Bender GmbH & Co. KG

Inventor： Dieter Hackl ,  Harald Sellner

IPC: G01R31/04 ,  G01R31/327 ,  G01R31/02

CPC classification number: G01R31/041 ,  G01R31/025 ,  G01R31/026 ,  G01R31/086 ,  G01R31/327 ,  H02H3/16 ,  H02H3/33 ,  H02H5/105

Abstract: The invention relates to a method and to an electrical protection device for detecting a disconnection of a protective conductor connection with a subsystem in ungrounded and grounded power supply systems and in a grounded power supply system comprising a converter system.The invention is based on the idea that the disconnection of the protective conductor connection with a subsystem will reduce the sum of the network leakage capacitances of the power supply system by the value of the network leakage capacitance of the subsystem. The necessary distinction between a subsystem in operation having a disconnected protective conductor connection and a shut-off subsystem is made by evaluating the current total power consumed via the power supply system. In the case of a converter system connected to the subsystem, the protective conductor disconnection is detected by examining the leakage current spectra that are characteristic of the converter system.

公开(公告)号：US08964339B2

公开(公告)日：2015-02-24

申请号：US13435289

申请日：2012-03-30

Applicant: Kang Li ,  Alexander Shoshiev

Inventor： Kang Li ,  Alexander Shoshiev

IPC: H02H3/00 ,  H02H9/08

CPC classification number: H02H11/001 ,  B60L3/0046 ,  B60L3/0069 ,  B60L3/04 ,  B60L11/1816 ,  B60L2240/547 ,  G01R19/155 ,  H02H3/14 ,  H02H5/105 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T90/14 ,  Y02T90/16

Abstract: A system and method for detecting the presence of a voltage on a ground conductor which is coupled to a protective Earth (PE) terminal associated with a power source. The power source is used to apply a voltage to a device. The system may use a high impedance device coupled across a switch, with the switch being in communication with a portion of the device. A control system may monitor a voltage across the high impedance device and determine if the voltage across the high impedance device exceeds a predetermined threshold. Exceeding the predetermined threshold indicates that an unsafe voltage from the power source is present on the ground conductor. A natural high impedance path between the device and the Earth is used to provide an Earth connection through the device to the Earth during operation of the system.

Abstract translation: 一种用于检测接地导体上存在电压的系统和方法，所述接地导体耦合到与电源相关联的保护接地（PE）端子。 电源用于向设备施加电压。 系统可以使用跨越开关耦合的高阻抗装置，开关与装置的一部分通信。 控制系统可以监视高阻抗装置两端的电压，并确定高阻抗装置两端的电压是否超过预定阈值。 超过预定阈值表示来自电源的不安全电压存在于接地导体上。 在设备和地球之间的自然高阻抗路径用于在系统运行期间通过设备向地球提供接地连接。

公开(公告)号：US20150048840A1

公开(公告)日：2015-02-19

申请号：US14386108

申请日：2013-04-11

Applicant: Michael P. Vangool ,  Geoffrey J. Baker

Inventor： Michael P. Vangool ,  Geoffrey J. Baker

IPC: G01R31/02

CPC classification number: G01R31/025 ,  H02H3/16 ,  H02H5/105

Abstract: A device for monitoring a neutral grounding resistor (NGR), including first and second NGRs electrically connected in parallel, a rectifier circuit electrically connected in series with the second NGR and a voltage source and a logic resistor electrically connected in series with the second NGR. A logic circuit measures current passing through the logic resistor and determines the resistance of the first NGR based on the measured current and the resistance of the second NGR. As such, a failed-open or failed-short condition of the first NGR may be identified based at least in part on the determined resistance of the first NGR.

Abstract translation: 一种用于监测中性点接地电阻器（NGR）的装置，包括并联电连接的第一和第二NGR，与第二NGR串联电连接的整流器电路和与第二NGR串联电连接的电压源和逻辑电阻器。 逻辑电路测量通过逻辑电阻器的电流，并且基于测量的电流和第二NGR的电阻确定第一NGR的电阻。 因此，可以至少部分地基于所确定的第一NGR的阻力来识别第一NGR的故障打开或失败的短条件。

公开(公告)号：US20140368152A1

公开(公告)日：2014-12-18

申请号：US14216918

申请日：2014-03-17

Applicant: Micheal Robert Pasche ,  Gary Thomas Baase, II ,  William James Genaw

Inventor： Micheal Robert Pasche ,  Gary Thomas Baase, II ,  William James Genaw

IPC: H02P3/06 ,  G01R31/34 ,  H02P27/06 ,  G01R31/02

CPC classification number: H02P3/06 ,  F04B47/02 ,  F04B49/02 ,  F04B49/10 ,  F04B2203/0202 ,  G01R31/025 ,  G01R31/343 ,  H02H5/105 ,  H02P27/04 ,  H02P27/06 ,  H02P29/0241

Abstract: Embodiments of the invention provide a variable frequency drive system and a method of detecting a ground in a system having a pump driven by a motor. The drive system and method can provide one or more of the following: a sleep mode, pipe break detection, a line fill mode, an automatic start mode, dry run protection, an electromagnetic interference filter compatible with a ground fault circuit interrupter, two-wire and three-wire and three-phase motor compatibility, a simple start-up process, automatic password protection, a pump out mode, digital input/output terminals, and removable input and output power terminal blocks.

Abstract translation: 本发明的实施例提供了一种变频驱动系统和一种在具有由马达驱动的泵的系统中检测地面的方法。 驱动系统和方法可以提供以下一个或多个：睡眠模式，管道断裂检测，线路填充模式，自动启动模式，干运行保护，与接地故障断路器兼容的电磁干扰滤波器， 线和三线和三相电机兼容性，简单的启动过程，自动密码保护，抽出模式，数字输入/输出端子和可移动输入和输出电源端子块。

公开(公告)号：US20140307353A1

公开(公告)日：2014-10-16

申请号：US14035188

申请日：2013-09-24

Applicant: EATON CORPORATION

Inventor： VINCENT FERRI ,  GARRY B. THEADORE ,  TODD M. LATHROP

IPC: H02H3/32

CPC classification number: H02H3/325 ,  G01R31/025 ,  H02H3/338 ,  H02H5/105

Abstract: 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.

Abstract translation: 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：US20140306715A1

公开(公告)日：2014-10-16

申请号：US13860682

申请日：2013-04-11

Applicant: EATON CORPORATION

Inventor： VINCENT FERRI ,  Todd Lathrop

IPC: G01R31/02

CPC classification number: G01R31/024 ,  H02H5/105

Abstract: A circuit for indicating a broken or missing neutral in a split phase electrical distribution configuration having an unbalanced load includes: a voltage divider configured to divide the voltage difference between a first line and a second line and to output the divided voltage difference as a virtual neutral; a rectifier including an input of the virtual neutral, the neutral, and an output, the rectifier configured to rectify a voltage difference between the virtual neutral and the neutral; a determination circuit including an input of the rectified voltage difference, a reference voltage and an output, the determination circuit configured to determine if the neutral is missing or broken based on the rectified voltage difference and the reference voltage; and an indicator circuit configured to indicate when the neutral is missing or broken based on the output of the determination circuit.

Abstract translation: 用于指示具有不平衡负载的分相式配电配置中的断线或缺失中性线的电路包括：分压器，其被配置为将第一线路和第二线路之间的电压差分压，并将分压电压差输出为虚拟中性线 ; 整流器，其包括虚拟空档的输入，空档和输出，所述整流器被配置为对虚拟空档和空档之间的电压差进行校正; 确定电路，包括整流电压差的输入，参考电压和输出，所述确定电路被配置为基于整流的电压差和所述参考电压来确定所述中性点是否丢失或断开; 以及指示电路，其被配置为基于所述确定电路的输出来指示所述中性线何时丢失或断开。

公开(公告)号：US20140254050A1

公开(公告)日：2014-09-11

申请号：US13793135

申请日：2013-03-11

Applicant: PASS & SEYMOUR, INC.

Inventor： Joshua Paul Haines ,  Kent R. Morgan ,  Brian Mueller

IPC: H02H3/16

CPC classification number: H02H3/162 ,  G01R31/026 ,  G01R31/3277 ,  H02H3/16 ,  H02H5/105

Abstract: The present invention is directed to a protective device configured to be coupled between an AC power source and an electrical load. A ground continuity monitor is coupled to the ground conductor, the ground continuity monitor being configured to detect a ground discontinuity condition in the ground conductor. A circuit interrupter mechanism is configured to interrupt electrical continuity in a tripped state and establish electrical continuity in a reset state. A self-test circuit is coupled to the ground continuity monitor and configured to perform a simulated ground continuity test that simulates the ground discontinuity condition. The self-test circuit provides a test failure signal when the ground continuity monitor fails to provide an output signal in response to the simulated ground continuity test. The test failure signal is configured to trip the circuit interrupter mechanism.

Abstract translation: 本发明涉及一种被配置为耦合在AC电源和电负载之间的保护装置。 接地连续性监视器耦合到接地导体，地面连续性监视器被配置为检测接地导体中的接地不连续状态。 电路断续器机构被配置为中断跳闸状态下的电连续性并且在复位状态下建立电连续性。 自检电路耦合到地面连续性监测器，并被配置为执行模拟地面不连续状态的模拟地面连续性测试。 当地面连续性监测器无法提供响应于模拟接地连续性测试的输出信号时，自检电路提供测试失败信号。 测试故障信号被配置为跳闸电路断续器机构。

公开(公告)号：US08779776B2

公开(公告)日：2014-07-15

申请号：US12312628

申请日：2007-11-23

Applicant: Karl Nathan Edwards

Inventor： Karl Nathan Edwards

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

CPC classification number: 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

Abstract: 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.

Abstract translation: 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：US20140177111A1

公开(公告)日：2014-06-26

申请号：US14235798

申请日：2011-08-09

Applicant: Zhongyu Wang

Inventor： Zhongyu Wang

IPC: H02H3/16

CPC classification number: H02H3/162 ,  H02H1/066 ,  H02H3/05 ,  H02H3/16 ,  H02H3/334 ,  H02H5/105

Abstract: The present disclosure provides a safe quick disconnect leakage protector, including a power supply circuit, a sampling circuit, a couple of single-pole single-throws, an on and off control circuit, and a testing circuit. The sampling circuit collects the leakage current signal between the live wire and the neutral wire and outputting the leakage current signal; the main control circuit receives the leakage current signal outputted from the sampling circuit, amplifies the leakage current signal, and outputs a grounding failure control signal when the leakage current reaches the predetermined value; the on and off control circuit receives the grounding failure control signal outputted from the main control circuit and controls the single-pole single-throw switches to disconnect the load from the external power supply according to the grounding failure control signal, thereby protecting the load and improves the safety of the leakage protection of an electrical appliance.

Abstract translation: 本公开提供了一种安全的快速断开泄漏保护器，包括电源电路，采样电路，一对单极单掷，开关控制电路和测试电路。 采样电路收集有线和中线之间的漏电流信号，并输出漏电流信号; 主控电路接收从采样电路输出的泄漏电流信号，放大漏电流信号，并在泄漏电流达到预定值时输出接地故障控制信号; 接通和断开控制电路接收从主控电路输出的接地故障控制信号，并控制单刀单掷开关根据接地故障控制信号从外部电源断开负载，从而保护负载和 提高电器的漏电保护的安全性。