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    Manual and automated non-destructive testing for short-circuit and ground fault conditions in branch motor circuits
    1.
    发明授权
    Manual and automated non-destructive testing for short-circuit and ground fault conditions in branch motor circuits 有权

    公开(公告)号：US10162008B2

    公开(公告)日：2018-12-25

    申请号：US15683749

    申请日：2017-08-22

    申请人： James J. Kinsella

    发明人： James J. Kinsella

    IPC分类号： G01R31/34 ,  G01R19/165 ,  G01R31/02 ,  G01R31/327 ,  G01R31/42

    摘要： A test circuit performs fault detection tests on a motor branch circuit, to detect pre-existing faults before a motor start-up to pre-empt potential damage to the motor branch circuit therefrom. The test circuit is configured to be coupled to the phase lines of a motor branch circuit at a set of test points strategically located on the phase lines. The test circuit includes test lines that are each coupled to a different one of the phase lines at one of the set of test points. The test circuit includes a test controller that, during a test mode, sequentially presents a low voltage supply to each phase line through the test line coupled thereto, to test for ground faults then sequentially couples the low voltage supply across each possible pairing of the phase lines to test for line-to-line faults. The test mode can be initiated manually or automatically.

    MONITORING SERVICE CURRENT FOR ARC FAULT DETECTION IN ELECTRICAL BRANCH CIRCUITS
    2.
    发明申请
    MONITORING SERVICE CURRENT FOR ARC FAULT DETECTION IN ELECTRICAL BRANCH CIRCUITS 审中-公开

    公开(公告)号：US20190324075A1

    公开(公告)日：2019-10-24

    申请号：US16503579

    申请日：2019-07-04

    申请人： James J. Kinsella

    发明人： James J. Kinsella

    IPC分类号： G01R31/12 ,  H02H1/00 ,  H01F38/30 ,  G01R31/02 ,  G01R15/18

    摘要： An RM current sensor assembly is used to indirectly sense the service current being drawn from a service by an electrical branch circuit, the output from which can be used to monitor the service current for features indicative of the presence series and/or parallel arc faults are present in the electrical branch circuit as they progress from their incipiency. The RM current sensor assembly is significantly smaller and less costly than prior art current transformers sensing current directly from the service line at full magnitude. The requisite bandwidth for accurately performing extraction of features indicating arc faults is maintained at this low cost and size because the amount of current actually sensed is substantially smaller. Current signature analysis can also be performed to monitor the operational integrity of appliances with motors, and an RM differential current sensor can detect cumulative leakage current to ground in the electrical branch circuit. All of the processing can be performed by a smart meter.

    ELECTRICALLY OPERATED BRANCH CIRCUIT PROTECTOR
    4.
    发明申请
    ELECTRICALLY OPERATED BRANCH CIRCUIT PROTECTOR 审中-公开
    电动分支电路保护器

    公开(公告)号：US20140210575A1

    公开(公告)日：2014-07-31

    申请号：US13751780

    申请日：2013-01-28

    申请人： James J. Kinsella

    发明人： James J. Kinsella

    IPC分类号： H01H77/06

    CPC分类号： H01H77/06 ,  H01H3/28 ,  H01H89/08 ,  H01H2300/052

    摘要： Electrical operation of circuit breakers utilizing a straight pull dc magnet system with positive means of locking in OFF position is provided. The operating dynamics have advantages in fault coordination and discrimination for motor branch circuits. The construction offers physical and economic advantages in control solutions.

    摘要翻译： 提供了使用具有正向锁定在OFF位置的直拉直流磁体系统的断路器的电气操作。 运行动态在电机分支电路的故障协调和辨别方面具有优势。 该建筑在控制解决方案中提供物理和经济优势。

    REDUCED COST RATIO METRIC MEASUREMENT TECHNIQUE FOR TARIFF METERING AND ELECTRICAL BRANCH CIRCUIT PROTECTION
    5.
    发明申请
    REDUCED COST RATIO METRIC MEASUREMENT TECHNIQUE FOR TARIFF METERING AND ELECTRICAL BRANCH CIRCUIT PROTECTION 审中-公开

    公开(公告)号：US20190324064A1

    公开(公告)日：2019-10-24

    申请号：US16503574

    申请日：2019-07-04

    申请人： James J. Kinsella

    发明人： James J. Kinsella

    IPC分类号： G01R19/00 ,  G01R1/20 ,  G01R27/02 ,  G01R35/00

    摘要： A ratio metric (RM) approach to providing the current sensing function of service currents to smart metering applications results in an RM current sensor assembly and RM differential current sensor assembly that can replace prior art sensors currently used for this purpose, with substantial reduction in cost of operation and size. The current sensor assemblies leverage current dividers having estimated current ratios, with any error being calibrated out of the sensor assembly by various approaches, such as requiring a single parametric adjustment of a burden resistor value to establish an expected output magnitude for a known current input magnitude to a requisite degree of accuracy. Calibration profiles for the entire service current range can be generated and used with the current sensor assemblies. Multiple RM current sensor assemblies can be used for segments of the current range to further increase accuracy. Improved and low cost leakage current protection is provided.

    RATIO METRIC CURRENT MEASUREMENT
    6.
    发明申请
    RATIO METRIC CURRENT MEASUREMENT 审中-公开

    公开(公告)号：US20160103157A1

    公开(公告)日：2016-04-14

    申请号：US14971939

    申请日：2015-12-16

    申请人： James J. Kinsella

    发明人： James J. Kinsella

    IPC分类号： G01R19/00 ,  H02H3/08

    CPC分类号： G01R19/0092 ,  G01R1/203 ,  G01R27/02 ,  G01R35/005 ,  H02H3/08

    摘要： The total current flow in a given electric circuit path is estimated by measuring the current in a second parallel current path and applying a ratio of the conductivity of the main and secondary path. Earth leakage current is measured by passing three wires through a toroid so as to detect differential current flow. Each wire is a conduction path wire parallel to each phase cable. The relative harmonic content between the fundamental and higher frequency components of a load current are calculated using a conduction path parallel to the main power cables.

    NON-DESTRUCTIVE SHORT CIRCUIT TESTING FOR ELECTRICALLY OPERATED CIRCUIT BREAKERS
    7.
    发明申请
    NON-DESTRUCTIVE SHORT CIRCUIT TESTING FOR ELECTRICALLY OPERATED CIRCUIT BREAKERS 审中-公开
    用于电动断路器的非破坏性短路电路测试

    公开(公告)号：US20160061872A1

    公开(公告)日：2016-03-03

    申请号：US14473383

    申请日：2014-08-29

    申请人： James J. Kinsella

    发明人： James J. Kinsella

    IPC分类号： G01R31/02 ,  G01R19/155 ,  G01R31/327

    CPC分类号： G01R31/025 ,  G01R31/3277 ,  G01R31/34 ,  G01R31/42

    摘要： A testing assembly includes a power supply and at least one circuit phase corresponding to a circuit phase of a motor branch circuit assembly. The circuit phase includes a current detector, a transistor, and an isolating unit. The testing assembly also includes a switch selecting between a RUN mode and a TEST mode. The testing assembly is connected to the motor branch circuit assembly. Prior to placing the motor branch circuit assembly into operation, the testing assembly can provide low voltage testing on the circuit phases of the motor branch circuit assembly. The testing assembly can check for ground faults and line-to-line faults in the motor branch circuit assembly when placed into the Test mode. In this manner, faults destructive to the motor branch circuit assembly can be avoided and corrected.

    摘要翻译： 测试组件包括电源和对应于电动机分支电路组件的电路相的至少一个电路相位。 电路相包括电流检测器，晶体管和隔离单元。 测试组件还包括在RUN模式和TEST模式之间选择的开关。 测试组件连接到电机分支电路组件。 在将电动机分支电路组件投入运行之前，测试组件可以在电动机分支电路组件的电路相位上提供低电压测试。 当测试组件放入测试模式时，测试组件可以检查电机分支电路组件中的接地故障和线对线故障。 以这种方式，可以避免和纠正对电机分支电路组件有破坏性的故障。

    MANUAL AND AUTOMATED NON-DESTRUCTIVE PRE-STARTUP TESTING FOR SHORT-CIRCUIT AND GROUND FAULT CONDITIONS IN MOTOR BRANCH CIRCUITS
    9.
    发明申请
    MANUAL AND AUTOMATED NON-DESTRUCTIVE PRE-STARTUP TESTING FOR SHORT-CIRCUIT AND GROUND FAULT CONDITIONS IN MOTOR BRANCH CIRCUITS 审中-公开

    公开(公告)号：US20190146022A1

    公开(公告)日：2019-05-16

    申请号：US16231998

    申请日：2018-12-25

    申请人： James J. Kinsella

    发明人： James J. Kinsella

    IPC分类号： G01R31/02 ,  G01R31/34 ,  G01R31/327 ,  G01R31/42

    摘要： A test circuit performs fault detection tests on a motor branch circuit, to detect pre-existing faults before a motor start-up to pre-empt potential damage to the motor branch circuit therefrom. The test circuit is configured to be coupled to the phase lines of a motor branch circuit at a set of test points strategically located on the phase lines. The test circuit includes test lines that are each coupled to a different one of the phase lines at one of the set of test points. The test circuit includes a test controller that, during a test mode, sequentially presents a low voltage supply to each phase line through the test line coupled thereto, to test for ground faults then sequentially couples the low voltage supply across each possible pairing of the phase lines to test for line-to-line faults. The test mode can be initiated manually or automatically.

    LOW-COST, FULL-RANGE ELECTRONC OVERLOAD RELAY DEVICE
    10.
    发明申请
    LOW-COST, FULL-RANGE ELECTRONC OVERLOAD RELAY DEVICE 审中-公开

    公开(公告)号：US20180287370A1

    公开(公告)日：2018-10-04

    申请号：US16003056

    申请日：2018-06-07

    申请人： James J. Kinsella

    发明人： James J. Kinsella

    IPC分类号： H02H7/085 ,  H02H1/00 ,  H03K5/24

    摘要： An electronic overload relay leverages a ratio metric current design to permit size and cost optimized circuit components that can be used to sense current for purposes of protecting motors by detecting overcurrent conditions in branch motor applications in lieu of thermal overload devices. A current divider is used to significantly reduce the current that must be sensed by a magnetically coupled toroid to permit its components to be size and cost optimized and to be implemented easily on a printed circuit board. The DC resistance can be used to provide a coarse design that can be calibrated pre-manufacture to establish the accuracy required in sensing motor load current by adjusting the value of the burden resistor. Precision printed circuit board traces can be used to ensure repeatability during manufacturing. A sweepable trigger value generator can permit operation over the entire range of FLC and the threshold can be calibrated into the device.