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    SYNTHETIC FAULT REMOTE DISCONNECT FOR A BRANCH CIRCUIT
    3.
    发明申请
    SYNTHETIC FAULT REMOTE DISCONNECT FOR A BRANCH CIRCUIT 审中-公开
    分支电路的合成故障远程断线

    公开(公告)号：US20160141123A1

    公开(公告)日：2016-05-19

    申请号：US14898800

    申请日：2013-06-21

    Applicant: SCHNEIDER ELECTRIC USA, INC.

    Inventor： Kevin M. JEFFERIES ,  Benjamin W. EDWARDS ,  Richard G. SPANGENBERG ,  Richard K. WEILER ,  Matthew L. WHITE

    IPC: H01H9/54 ,  H02H3/16 ,  H02H3/08 ,  H02H5/04

    CPC classification number: H01H9/54 ,  H02H1/0015 ,  H02H1/0076 ,  H02H3/023 ,  H02H3/08 ,  H02H3/16 ,  H02H3/334 ,  H02H5/04 ,  H02H5/041 ,  H02H5/08

    Abstract: A synthetic fault signal generator assembly is remotely located on a branch circuit downstream from a circuit breaker protecting a load. The synthetic fault signal generator assembly is configured to detect an improper circuit condition that is not independently detected, detectable, or actionable by the circuit breaker such as, for example, a load or outlet receptacle specific problem that can lead to equipment damage or property damage if not mitigated. In response to the improper circuit condition being detected, the synthetic fault signal generator assembly generates a synthetic fault signal, which causes the circuit breaker to trip. The synthetic fault signal generator assembly can inject the synthetic fault signal into the branch circuit to provide the synthetic fault signal to the circuit breaker.

    Abstract translation: 合成故障信号发生器组件远程位于保护负载的断路器下游的分支电路上。 合成故障信号发生器组件被配置为检测不是由断路器独立地检测，可检测或可操作的不正确的电路状况，例如可能导致设备损坏或财产损坏的负载或插座容器的特定问题 如果不减轻 响应于检测到不正确的电路状况，合成故障信号发生器组件产生合成故障信号，这导致断路器跳闸。 合成故障信号发生器组件可以将合成故障信号注入到分支电路中以向断路器提供合成故障信号。

    Method and System for Transformer Dissolved Gas Harmonic Regression Analysis
    4.
    发明申请
    Method and System for Transformer Dissolved Gas Harmonic Regression Analysis 有权
    变压器溶解气体谐波回归分析方法与系统

    公开(公告)号：US20090043538A1

    公开(公告)日：2009-02-12

    申请号：US11834500

    申请日：2007-08-06

    Applicant: Donald R. Lamontagne

    Inventor： Donald R. Lamontagne

    IPC: G06F11/30

    CPC classification number: H01F27/402 ,  H01F2027/404 ,  H02H5/08

    Abstract: A transformer (26) is monitored by a dissolved gas monitoring device (28). A method (36) in the form of executable code instructs a processor (34) to analyze a condition of the transformer (26). The method includes receiving (90), from the monitoring device (28), data elements (60) in the form of values (70) of dissolved gases (72) associated with operation of transformer (26) during a period of time. Periodic characteristics responsive to the operation of the transformer (26) are identified (92) from the data elements (60). The periodic characteristics may include a daily, semi-annual, and/or annual fluctuation of gas generation in response to transformer loading. A gas generation rate trend (112) is distinguished from the periodic characteristics, the condition of the transformer (26) is determined and its future condition may be predicted in response to the trend (112). The condition is presented to a user (58).

    Abstract translation: 变压器（26）由溶解气体监测装置（28）监测。 可执行代码形式的方法（36）指示处理器（34）分析变压器（26）的状况。 该方法包括从监测装置（28）接收（90）在一段时间内以与变压器（26）的操作相关联的溶解气体（72）的值（70）的形式的数据元素（60）。 响应于变压器（26）的操作的周期特性从数据元件（60）被识别（92）。 周期性特征可以包括响应于变压器负载的天然气生成的每日，半年和/或每年的波动。 将气体发生率趋势（112）与周期特性区分开，确定变压器（26）的状态，并根据趋势预测其未来状况（112）。 该条件被呈现给用户（58）。

    Common ground control switch for an irrigation system
    5.
    发明授权
    Common ground control switch for an irrigation system 失效
    灌溉系统的通用地面控制开关

    公开(公告)号：US5239203A

    公开(公告)日：1993-08-24

    申请号：US639013

    申请日：1991-01-09

    Applicant: John T. Thorngren

    Inventor： John T. Thorngren

    IPC: F25D21/02 ,  G01F23/24 ,  H02H5/08

    CPC classification number: H02H5/08 ,  F25D21/02 ,  G01F23/243 ,  Y10T307/766 ,  Y10T307/779

    Abstract: A control switch for controlling the operation of an overhead irrigation system based upon the moisture level of the ground in an area to be irrigated. The control switch includes first and second moisture detection probes positioned at first and second underground locations in the area to be irrigated, which, upon detection that the soil is dry, place a positive conductive charge on the switch, thereby turning on the irrigation equipment. Upon detection that the soil is wet, the probes remove the conductive charge, thereby turning off the irrigation equipment. The control switch provides varying degrees of sensitivity to soil moisture, and varying time delays in turning the switch on when the soil is dry, and in turning the switch off when the soil is wet. A pulsing current protection circuit permits a positive DC signal taken from an AC triac to turn on the triac when both the AC and DC portions of the control switch share a common ground.

    Abstract translation: 一种控制开关，用于基于要灌溉的区域中的地面的水分水平来控制顶置式灌溉系统的操作。 控制开关包括位于待灌溉区域中的第一和第二地下位置处的第一和第二水分检测探头，在检测到土壤干燥后，在开关上放置正电导率，从而打开灌溉设备。 在检测到土壤是湿的时候，探头去除导电电荷，从而关闭灌溉设备。 控制开关为土壤湿度提供不同程度的灵敏度，以及在土壤干燥时打开开关时变化的时间延迟，以及在土壤潮湿时关闭开关。 脉冲电流保护电路允许从AC三端双向可控硅开始的正直流信号在控制开关的交流和直流部分都共用共同的地面时接通三端双向可控硅开关。

    Sudden, pressure relay supervisory apparatus
    6.
    发明授权
    Sudden, pressure relay supervisory apparatus 失效
    突然，压力继电器监控装置

    公开(公告)号：US4903160A

    公开(公告)日：1990-02-20

    申请号：US704993

    申请日：1985-02-25

    Applicant: Walter A. Elmore ,  Hung J. Li

    Inventor： Walter A. Elmore ,  Hung J. Li

    IPC: H02H7/045 ,  H02H5/08 ,  H02H7/04

    CPC classification number: H02H5/08 ,  H02H7/04

    Abstract: Apparatus for the supervision of a sudden pressure relay (SPR) system which protects a power system network transformer having a plurality of windings associated with each phase of the power system network. This apparatus overcomes the difficulties associated with previous overcurrent supervision of the SPR system for multiple-winding transformers. The apparatus utilizes a maximum restraint signal selection network which offers a discriminating differentiation between high and low current levels in all of the transformer windings and accomplishes this in one embodiment with a single measuring unit per phase of the power system network. For each phase, when the selected maximum restraint signal exceeds a predetermined level, the supervisory unit blocks the SPR from operating the breakers which isolate the power transformer from the power system network. This blocking condition is relieved after a predetermined time period from when the selected restraint signal falls below the predetermined level. The apparatus is further capable of detecting both an internal fault condition and an inrush energization condition of the power transformer and for inhibiting the blockage of the SPR from operating the breakers during either of these detected conditions.

    Abstract translation: 用于监控突发压力继电器（SPR）系统的装置，其保护具有与电力系统网络的每个相位相关联的多个绕组的电力系统网络变压器。 该装置克服了以前对多绕组变压器SPR系统过电流监控的困难。 该装置利用最大限制信号选择网络，其在所有变压器绕组中提供高电平和低电流水平之间的鉴别差异，并且在一个实施例中，在电力系统网络的每相中具有单个测量单元。 对于每个相位，当所选择的最大限制信号超过预定电平时，监控单元阻止SPR操作将电力变压器与电力系统网络隔离的断路器。 在从所选择的约束信号下降到预定水平以下的预定时间段之后，该阻塞条件被释放。 该装置还能够检测电力变压器的内部故障状况和浪涌通电状态，并且在这些检测条件中的任一个期间，阻止SPR阻止操作断路器。

    Peak load access in a two-way CATV contention system
    7.
    发明授权
    Peak load access in a two-way CATV contention system 失效
    双向CATV争用系统中的峰值负载访问

    公开(公告)号：US4528663A

    公开(公告)日：1985-07-09

    申请号：US560087

    申请日：1983-12-09

    Applicant: Richard W. Citta

    Inventor： Richard W. Citta

    IPC: H02H5/08 ,  H04L12/28 ,  H04N7/173 ,  H04J3/00 ,  H04H1/00

    CPC classification number: H02H5/08 ,  H04L12/2801 ,  H04N7/17363 ,  H04N2007/17381

    Abstract: In a two-way cable television (CATV) contention system peak upstream loading is accommodated by varying the length of the upstream transmission window during which a subscriber may randomly transmit for improved subscriber access to the CATV headend. Following an upstream transmission, the subscriber waits a predetermined period for a message receipt acknowledgment from the headend. Failure to receive this acknowledgment results in an upstream retransmission by the subscriber at a randomly selected time within a transmission window, the length of which is a function of the upstream message traffic load. The transmission window is initially short to permit rapid retransmissions upstream in order to avoid interfering noise bursts of short duration. The upstream transmission window is then increased in length to a maximum value to string out upstream transmissions during a peak access period for reducing upstream message collisions. Following upstream transmissions during the maximum transmission window, the window is then reduced in length to accommodate reduced upstream traffic following successful upstream communication by the majority of subscribers. This upstream transmission distribution arrangement improves subscriber headend access, namely system throughput, by increasing the transmission window during periods of peak access and shortening the window length following peak access periods in order to reduce the time required for a successful upstream transmission.

    Abstract translation: 在双向有线电视（CATV）争用系统中，通过改变用户可以随机发送的上游传输窗口的长度来适应上游负载峰值，以改善用户对CATV前端的访问。 在上行传输之后，用户等待来自前端的消息接收确认的预定时间段。 不接收该确认导致用户在随机选择的时间内在传输窗口内的上游重传，其长度是上行消息业务负载的函数。 传输窗口最初是短的，以允许上游的快速重传，以避免短时间内的干扰噪声突发。 然后将上行传输窗口的长度增加到最大值，以在峰值访问周期期间串行上行传输，以减少上游信息冲突。 在最大传输窗口中的上行传输之后，窗口的长度被减小以适应大多数用户成功上行通信之后的减少的上行流量。 这种上行传输分配布置通过在峰值访问期间增加传输窗口并缩短峰值访问周期之后的窗口长度来改善用户头端接入，即系统吞吐量，以便减少成功的上行传输所需的时间。

    Pressure and temperature responsive protective devices
    8.
    发明授权
    Pressure and temperature responsive protective devices 失效
    压力和温度反应保护装置

    公开(公告)号：US4223364A

    公开(公告)日：1980-09-16

    申请号：US909454

    申请日：1978-05-25

    Applicant: Harold L. Sangster

    Inventor： Harold L. Sangster

    IPC: H02H5/06 ,  H02H5/08 ,  H02H7/04

    CPC classification number: H02H5/06 ,  H02H5/08

    Abstract: The dangers inherent in the failure of available sensors to protect against explosions of the tanks of oil filled transformers has been found to be due in part to failures of such sensors to compensate for the fact that the temperature-pressure relationship in tanks of oil filled transformers does not necessarily follow a single valued constant volume version of Boyle's Law. The construction of the apparatus is readily adaptable to pressure only or temperature only sensing, to contact make or break operation either inside or outside of the tank. Further difficulties arise particularly in stiff systems from failure of available protective systems to respond in a manner to prevent explosions in spite of a warning that conditions have reached the danger point. These dangers are further overcome by the use of a sensor which senses both temperture and pressure in the system to short circuit the high-voltage input conductor to the transformer to ground whereby a current limiting fuse or other overcurrent device is quickly opened thus causing the protective device immediately ahead of the transformer to clear the fault and prevent explosion of the transformer.

    Abstract translation: 已经发现，可用的传感器不能防止装满油的变压器的罐的爆炸所固有的危险部分是由于这种传感器的故障补偿了填充油的变压器的箱体中的温度 - 压力关系的事实 不一定遵循Boyle定律的单一版本的常量版本。 该装置的结构容易适应于仅压力或仅温度感测，以在罐的内部或外部接触制动或断开操作。 特别是在可用的保护系统故障的僵硬系统中，尽管有警告条件达到危险点，但是以尽可能防止爆炸的方式作出反应也是困难的。 通过使用感测系统中的温度和压力的传感器进一步克服这些危险，以将高压输入导体短路到变压器到地，由此限流熔断器或其它过电流装置被快速地打开，从而导致保护 设备立即在变压器前方，以清除故障并防止变压器爆炸。

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