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31. 发明授权

US4296451A Ultra high speed protective relay circuit 失效
标题翻译：超高速保护继电器电路
公开(公告)号：US4296451A
公开(公告)日：1981-10-20
申请号：US108436
申请日：1979-12-31
申请人： Stanley B. Wilkinson
发明人： Stanley B. Wilkinson
IPC分类号： H02H3/38 , H02H3/28
CPC分类号： H02H3/382
摘要： A protective relay circuit includes a first a-c level detector or bi-polar threshold circuit to which a polarizing signal V.sub.POL is applied. An output is provided from the first a-c level detector only when the magnitude of V.sub.POL exceeds a predetermined value. Also included is a second a-c level detector or bi-polar threshold circuit to which an operating signal V.sub.OP is applied. An output is provided from the second a-c level detector only when the magnitude of V.sub.OP exceeds a predetermined value. The output of the first level detector is compared in a coincidence circuit with the output of the second level detector. The detection of coincidence for a predetermined time period, as measured by a characteristic timer, results in an output signal for use in controlling operation of a trip coil of a circuit breaker.
摘要翻译：保护继电器电路包括施加极化信号VPOL的第一a-c电平检测器或双极阈值电路。仅当VPOL的大小超过预定值时，才从第一a-c电平检测器提供输出。还包括施加操作信号VOP的第二a-c电平检测器或双极阈值电路。仅当VOP的大小超过预定值时，才从第二a-c电平检测器提供输出。将第一电平检测器的输出与符合电路与第二电平检测器的输出进行比较。通过特征定时器测量的预定时间段的一致检测导致用于控制断路器的跳闸线圈的操作的输出信号。

32. 发明授权

US4268885A GFI Sensor circuit 失效
标题翻译： GFI传感器电路
公开(公告)号：US4268885A
公开(公告)日：1981-05-19
申请号：US62956
申请日：1979-08-02
申请人： Malcolm Williams
发明人： Malcolm Williams
IPC分类号： H02H3/33 , H02H3/28
CPC分类号： H02H3/331 , H02H3/337
摘要： In an electronic module for a ground fault interrupter the portion that amplifies a sensed ground fault signal is in the form of a series of cascaded CMOS inverter stages. The electronic module also includes an additional CMOS inverter providing a balanced input to the amplifier to aid in preventing operation of the ground fault interrupter during the turn-on period of operation.
摘要翻译：在用于接地故障中断器的电子模块中，放大感测到的接地故障信号的部分是一系列级联的CMOS反相器级的形式。电子模块还包括附加的CMOS反相器，其向放大器提供平衡输入，以有助于防止接通故障中断器在接通操作期间的操作。

33. 发明授权

US4228477A Circuit for monitoring the current distribution in parallel-connected converted branches 失效
标题翻译：用于监视并联转换分支中的电流分布的电路
公开(公告)号：US4228477A
公开(公告)日：1980-10-14
申请号：US8040
申请日：1979-01-31
申请人： Achim Claus , Heinrick Geissing , Willi Ulbrich
发明人： Achim Claus , Heinrick Geissing , Willi Ulbrich
IPC分类号： H02H7/10 , G01R19/10 , H02H3/36 , H02H7/12 , H02H3/28
CPC分类号： H02H7/12 , G01R19/10 , H02H3/36
摘要： A circuit arrangement for monitoring the current inbalance in two parallel-connected converter branches, each of which includes at least two series-connected converter valves. The anodes and cathodes, respectively, of adjacent converter valves in a given branch are connected together via cross-connections containing current transformers. A differential current transformer is provided at the output junction point of the two converter branches. Starting with the output signal of the differential current transformer, the exact current misdistribution for each adjacent converter valve pair is determined via summing amplifiers by adding the currents of the transverse transformers. A protective measure is triggered if a current misdistribution occurs.
摘要翻译：一种用于监测两个并联连接的转换器分支中的电流不平衡的电路装置，每个转换器分支包括至少两个串联连接的转换器阀。给定分支中相邻转换器阀的阳极和阴极分别通过包含电流互感器的交叉连接在一起。在两个转换器分支的输出接点处提供差分电流互感器。从差动电流互感器的输出信号开始，通过加上横向变压器的电流，通过求和放大器确定每个相邻转换器阀对的精确电流误差。如果发生当前的错误分配，则触发保护措施。

34. 发明授权

US4135222A Fault current protection switch 失效
标题翻译：故障电流保护开关
公开(公告)号：US4135222A
公开(公告)日：1979-01-16
申请号：US760974
申请日：1977-01-21
申请人： Bernd J. Siepmann
发明人： Bernd J. Siepmann
IPC分类号： H02H3/32 , H01H83/02 , H02H3/33 , H02H3/347 , H02H3/28
CPC分类号： H02H3/332
摘要： A fault current protection switch detects fault currents from conductors of a supply means to ground. The system uses at least one difference transformer connected to the conductors of the supply mains. An oscillation generator circuit is connected to the difference transformer through feedback windings. The oscillation generator circuit checks the magnetization of a core of the difference transformer, and, in the event of a change in the transforming properties of the core due to "mis" magnetization caused by a fault current, the oscillation generator circuit triggers a control and switching member connected in the supply mains to disconnect the same.
摘要翻译：故障电流保护开关检测从供电装置的导体到地的故障电流。该系统使用至少一个连接到电源的导线的差分变压器。振荡发生器电路通过反馈绕组连接到差分变压器。振荡发生器电路检查差分变压器的磁芯的磁化，并且在由于故障电流引起的“误”磁化的芯的变换特性的变化的情况下，振荡发生器电路触发控制，开关构件连接在电源中以断开连接。

35. 发明授权

US4121269A Ground fault signal circuit for circuit breaker trip unit 失效
标题翻译：断路器跳闸单元接地故障信号电路
公开(公告)号：US4121269A
公开(公告)日：1978-10-17
申请号：US794700
申请日：1977-05-06
申请人： Charles F. Hobson, Jr.
发明人： Charles F. Hobson, Jr.
IPC分类号： H02H3/34 , H02H3/28
CPC分类号： H02H3/34
摘要： Separate current transformers sense the individual currents flowing in each conductor of a distribution circuit. A full wave rectifying network includes a plurality of parallel pairs of like poled, series diodes connected between a pair of buses. One corresponding side of each transformer secondary is connected to the junction between a different diode pair. A series circuit consisting of an additional pair of like poled diodes and a burden resistor is also connected between the buses. The corresponding other sides of the transformer secondaries are connected in common to the junction between the additional diode pair. A voltage is developed across the burden resistor only upon the existence of an imbalance in the currents flowing in the distribution circuit.
摘要翻译：单独的电流互感器感测在配电电路的每个导体中流动的各个电流。全波整流网络包括连接在一对总线之间的多个平行的类似极化的串联二极管对。每个变压器次级的一个对应侧连接到不同二极管对之间的结。总线之间也连接有由一对额外的极性二极管和负载电阻组成的串联电路。变压器次级的对应的另一侧共同连接到附加二极管对之间的结。只有在分配电路中流动的电流不平衡时，负载电阻才会产生电压。

36. 发明授权

US4110808A Ground fault protection system for multiple source distribution networks 失效
标题翻译：多源分布网络接地故障保护系统
公开(公告)号：US4110808A
公开(公告)日：1978-08-29
申请号：US830265
申请日：1977-09-02
申请人： Charles F. Hobson, Jr. , John D. Hamilton
发明人： Charles F. Hobson, Jr. , John D. Hamilton
IPC分类号： H02H3/28
CPC分类号： H02H3/286
摘要： Various embodiments of a ground fault protection system are disclosed for protecting a multiple source distribution network consisting of at least two sources having their neutral points interconnected by main neutral and tie neutral bus and also typically by separate ground connections. The system operates to selectively trip a ground fault circuit interrupter by distinguishing between normal neutral loading regardless of the routes taken by neutral currents in returning to the sources and a ground fault regardless of the routes taken by ground fault currents in returning to the source feeding the fault.
摘要翻译：公开了接地故障保护系统的各种实施例，用于保护由至少两个源组成的多源分配网络，其中性点的中性点通过主中性线和中性母线互连，并且还通常通过单独的接地连接。该系统通过区分正常中性负载来选择性地跳闸接地故障电路断路器，而不管返回到源极的中性点电流所采用的路由以及接地故障，而不管接地故障电流在返回馈电源时所采用的路由。故障。

37. 发明授权

US4092690A Protective relay circuit providing a combined distance and overcurrent function 失效
标题翻译：保护继电器电路提供组合的距离和过流功能
公开(公告)号：US4092690A
公开(公告)日：1978-05-30
申请号：US764302
申请日：1977-01-31
申请人： Stanley B. Wilkinson
发明人： Stanley B. Wilkinson
IPC分类号： H02H3/10 , H02H3/38 , H02H3/40 , H02H3/28
CPC分类号： H02H3/382 , H02H3/10 , H02H3/40
摘要： The protective relay circuits herein provide a combined distance and overcurrent type of function. The protective relay circuit includes an a-c level detector or bi-polar threshold circuit to which the quantity I (Z.sub.R - Z.sub.F) is applied. The quantity I is the current in the line, Z.sub.R is a replica or reference impedance corresponding to the lines being protected and Z.sub.F is the line impedance to the fault from the relay measuring point. IZ.sub.F is equal to V, the voltage input to the relay. An output is provided from the a-c level detector only when the quantity I (Z.sub.R - Z.sub.F) exceeds a predetermined value. The output of the level detector is compared in a coincidence circuit, or AND gate, with a polarizing signal. The detection of coincidence for a selectable predetermined time period, as measured by a characteristic timer, results in an output signal for use in controlling operation of the trip coil of the circuit breaker. The protective relay circuit may be used on series-capacitor compensated lines as well as on uncompensated lines. When the protective relay circuit is used on a compensated line, the a-c threshold level of the level detector is set to be a function of the breakdown voltage of the spark gap protecting the series compensating capacitor.

38. 发明授权

US4080641A Ground fault detector 失效
标题翻译：接地故障检测器
公开(公告)号：US4080641A
公开(公告)日：1978-03-21
申请号：US704323
申请日：1976-07-12
申请人： Otto Heinrich Schade, Jr.
发明人： Otto Heinrich Schade, Jr.
IPC分类号： H02H3/347 , G01R19/145 , G01R31/02 , H02H3/33 , H02H3/28
CPC分类号： G01R31/025 , G01R19/145 , H02H3/337
摘要： A ground fault detector which exhibits greater sensitivity to sensing coil current during the initial portions of a-c line voltage half-cycles than during the final portions of those half cycles. This improves its response to resistive ground faults in the presence of unbalanced capacitance to ground conditions of the a-c power lines.
摘要翻译：一种接地故障检测器，它在a-c线电压半周期的初始部分期间比在半个周期的最后部分期间对感测线圈电流具有更大的灵敏度。在a-c电源线的接地状态不平衡的情况下，这可以改善其对电阻性接地故障的响应。

39. 发明授权

US4079434A Out-of-step relay 失效
标题翻译：失步继电器
公开(公告)号：US4079434A
公开(公告)日：1978-03-14
申请号：US707989
申请日：1976-07-23
申请人： Walter A. Elmore
发明人： Walter A. Elmore
IPC分类号： H02H3/48 , H02H3/30 , H02H3/28
CPC分类号： H02H3/302
摘要： An out-of-step relay for an alternating potential electric power transmission line is disclosed wherein the decision to trip is determined by the rate of change of the phase relationship of the voltages at the remote and local ends of the transmission line as well as by the magnitude of the phase difference of the remote and local voltages. More particularly, there is described a pair of AND networks which provide two timing signals proportional to the phase difference of the voltages and a pair of timing devices; one of said devices timing the difference in the time of the two timing signals to establish the rate of change of the phase relationship and the other of said devices timing the sum of the two timing signals to establish a signal which is representative of the magnitude of the phase relationship.
摘要翻译：公开了一种用于交流电力输电线路的失调继电器，其中跳闸决定由传输线的远端和本端的电压的相位关系的变化率以及由远程和本地电压的相位差的大小。更具体地，描述了一对AND网络，其提供与电压的相位差成正比的两个定时信号和一对定时装置; 所述装置中的一个对两个定时信号的时间差进行定时，以建立相位关系的变化率，并且所述装置中的另一个对两个定时信号的和进行定时以建立代表幅度的信号相位关系。

40. 发明授权

US4056837A Ground fault circuit interrupter with trip level adjustment 失效
标题翻译：接地故障电路断路器，跳闸电平调整
公开(公告)号：US4056837A
公开(公告)日：1977-11-01
申请号：US625615
申请日：1975-10-24
申请人： John J. Misencik , Gary S. Zakrzewski
发明人： John J. Misencik , Gary S. Zakrzewski
IPC分类号： H02H3/33 , H02H3/28
CPC分类号： H02H3/33
摘要： A sensing amplifier of half wave sensitivity has its trip level effectively changed without internal adjustment in the sensing amplifier by a circuit branch connected between respective points on the hot line conductor and the neutral conductor across the differential transformer core and containing a resistance for causing additional current flow vectorially added to differential current otherwise occurring between the primary windings.
摘要翻译：半波灵敏度的感测放大器的跳闸电平有效地改变，没有通过连接在热线导体上的各个点和差分变压器铁芯之间的中性导体之间的电路支路在感测放大器内部进行调整，并且包含用于引起额外电流的电阻流向矢量地加到差分电流上，否则在初级绕组之间发生。

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