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61. 发明授权

US5926010A Overcurrent breaking circuit 失效
标题翻译：过电流断路
公开(公告)号：US5926010A
公开(公告)日：1999-07-20
申请号：US5797
申请日：1998-01-12
申请人： Kiyoshi Hosokawa , Nobuhiro Imaizumi
发明人： Kiyoshi Hosokawa , Nobuhiro Imaizumi
IPC分类号： B60R16/02 , H02H1/04 , H02H3/08 , H02H3/087 , H02H3/093 , G05F1/10
CPC分类号： H02H3/087 , H02H1/043 , Y10S323/908
摘要： An overcurrent breaking circuit includes a semiconductor switch inserted in a main current path; a current detector circuit for detecting a current passing through the main current path; a logic circuit for switching off the semiconductor switch when the current detector circuit detects a current exceeding a set value for an overcurrent level; a first unit for prohibiting the logic circuit from performing an operation for switching off the semiconductor switch even if the current detector circuit detects a current exceeding the set value for a first short time period immediately after the semiconductor switch is switched from a breaking state to a conductive state; and a second unit for prohibiting the logic circuit from performing an operation for switching off the semiconductor switch for a second short time period even if the current detector circuit detects a current exceeding the set value when the semiconductor switch remains in a conductive state.
摘要翻译：过电流断路电路包括：插入主电流路径的半导体开关; 用于检测通过所述主电流路径的电流的电流检测器电路; 当电流检测器电路检测到超过设定值的电流为过电流电平时，切断半导体开关的逻辑电路; 第一单元，用于禁止逻辑电路执行关闭半导体开关的操作，即使电流检测器电路在半导体开关从断开状态切换到第一短时间段之后的第一短时间段内检测到超过设定值的电流导电状态; 以及第二单元，用于在半导体开关保持导通状态时，即使电流检测器电路检测到超过设定值的电流，也禁止逻辑电路在第二短时间段内执行关闭半导体开关的操作。

62. 发明授权

US5719732A Overload protecting device 失效
标题翻译：过载保护装置
公开(公告)号：US5719732A
公开(公告)日：1998-02-17
申请号：US767346
申请日：1996-12-16
申请人： Tsuneo Nagahama , Tatsuya Mizobata
发明人： Tsuneo Nagahama , Tatsuya Mizobata
IPC分类号： H02H3/08 , H02H3/093 , H02H7/00 , H02H7/085 , H02P29/02 , H02H5/04
CPC分类号： H02H7/0855
摘要： An overload protecting device which includes a comparator 11 to which an output voltage V10 in proportion to the current flowing through a motor 5 and a start detecting reference voltage E11 are inputted, and a comparator 13 to which the output voltage V10 and an overload detecting reference voltage E13 are inputted, a starting timer 14 for clocking a first period of time T1 lapsing since the output of a signal from the comparator 11, an overload timer 14 for clocking a second period of time T2, which is shorter than the first period of time T1, lapsing since the output of a signal from the comparator 13, a transient finish detecting circuit 300 for outputting a signal V33 representing a finish of transient of the motor 5 finish based on signal outputted from the comparators 11 and 13, and an overload trip relay 18 for cutting off a motor current to the motor 5 through the logical operation of the signal V33 representing motor transient finish or an output signal V12 from the starting timer 12, with an output signal V14 from the overload timer 14. The driving mechanism driven by the motor 5 is properly protected from the overload.
摘要翻译：一种过载保护装置，包括比较器11，输入电压V10与流过马达5的电流成比例的输出电压V10和起动检测基准电压E11;比较器13，输出电压V10和过载检测基准输入电压E13，用于对从比较器11输出的信号输出的第一时间段T1进行计时的起动定时器14，用于计时第二时间段T2的过载定时器14，该过载定时器14比第一时间段T2短时间T1，从比较器13的信号输出开始，用于根据从比较器11和13输出的信号输出代表电动机5的瞬变结束的信号V33的瞬时完成检测电路300和过载跳闸继电器18，用于通过表示电动机瞬时完成的信号V33的逻辑操作或者起动的输出信号V12将电动机电流切断到电动机5 定时器12，具有来自过载定时器14的输出信号V14。由电动机5驱动的驱动机构被适当地防止过载。

63. 发明授权

US5633776A Circuit breaker 失效
标题翻译：断路器
公开(公告)号：US5633776A
公开(公告)日：1997-05-27
申请号：US506390
申请日：1995-07-24
申请人： Gheorghe J. Juncu , Steven V. Snead , Dan M. Culbertson
发明人： Gheorghe J. Juncu , Steven V. Snead , Dan M. Culbertson
IPC分类号： H01H47/32 , H01H51/22 , H01H71/12 , H01H71/68 , H02H3/093 , H02H3/00
CPC分类号： H01H71/68 , H01H71/123 , H02H3/0935 , H01H47/32 , H01H51/2209
摘要： An electronically controlled latching circuit breaker capable of being remotely set or tripped. The electronic controls are current sensitive rather than thermally activated.
摘要翻译：一种能够远程设置或跳闸的电子控制闭锁断路器。电子控制是电流敏感而不是热激活。

64. 发明授权

US5627717A Electronic processing unit, and circuit breaker including such a unit 失效
标题翻译：电子处理单元和包括这种单元的断路器
公开(公告)号：US5627717A
公开(公告)日：1997-05-06
申请号：US366149
申请日：1994-12-28
申请人： Howard B. Pein , Gregory T. Divincenzo , Paulo Caldiera , Wen-Jian Gu , Stephen L. Wong
发明人： Howard B. Pein , Gregory T. Divincenzo , Paulo Caldiera , Wen-Jian Gu , Stephen L. Wong
IPC分类号： H02H3/093 , H02H3/00
CPC分类号： H02H3/0935
摘要： Digital processing of current signals allows close matching of arbitrary time delay curves for a circuit breaker. An analog signal proportional to the current is sampled and digitized. Digital samples, with or without further processing, are used to select increment values from a look-up table for accumulation in a counter. The counter is decremented periodically to simulate cooling of the circuit being protected. The values in the look-up table are determined according to the desired time delay curve. Processing of the digital samples may include squaring samples, accumulating the squared values to form a subtotal which is compared with an instantaneous trip threshold, accumulating the subtotals for a time period equal to half a cycle of AC line voltage, taking the square root of the accumulated subtotals, and using that square root as the address for looking up the increment value.
摘要翻译：电流信号的数字处理允许断路器的任意时间延迟曲线的紧密匹配。与电流成比例的模拟信号被采样和数字化。使用或不进行进一步处理的数字样本用于从查找表中选择增量值以累积在计数器中。计数器周期性地递减，以模拟被保护电路的冷却。查找表中的值根据所需的时间延迟曲线确定。数字样本的处理可以包括平方样本，累积平方值以形成小计，其与瞬时跳闸阈值进行比较，将小计累加等于AC线电压的一半周期的时间段，取平均根累积小计，并使用该平方根作为查找增量值的地址。

65. 发明授权

US5627716A Overcurrent protection device 失效
标题翻译：过电流保护装置
公开(公告)号：US5627716A
公开(公告)日：1997-05-06
申请号：US610679
申请日：1996-03-05
申请人： James L. Lagree , Harry W. Wargo , Anthony Tomeo , Joseph C. Engel
发明人： James L. Lagree , Harry W. Wargo , Anthony Tomeo , Joseph C. Engel
IPC分类号： G06J1/00 , H02H1/04 , H02H3/00 , H02H3/04 , H02H3/093 , H02H6/00 , H02H3/08
CPC分类号： G06J1/00 , H02H3/04 , H02H3/0935 , H02H1/046 , H02H3/006 , H02H6/005
摘要： A microprocessor based overcurrent trip unit includes an analog circuit for monitoring phase currents in the electrical interrupting device. The analog circuit is adapted to interface with the microprocessor over a range of selectable setpoints for instantaneous tripping and at the same time accurately monitor the phase currents even during a condition when the current sensing transformers are saturated. The overcurrent trip unit also allows the function of the long time delay characteristics of protection curve to be varied in order to provide better coordination with the characteristics of other overcurrent tripping devices in an electrical distribution system, such as a current limiting fuse, thereby enhancing the overall reliability of the system. For example, the function may be varied to provide either a fixed or FLAT, It, I.sup.2 t and I.sup.4 t functions. The overcurrent tripping device also allows for relatively wide adjustment ranges for the long time delay and short time delay protection portions of an overcurrent protection curve. In order to prevent any overlapping of the protection ranges, the long time delay portion is prevented from tripping the interrupting device prior to the short time delay portion.
摘要翻译：基于微处理器的过电流跳闸单元包括用于监视电中断装置中的相电流的模拟电路。模拟电路适用于在一定范围的可选设定点上与微处理器进行接口，用于瞬时跳闸，并且即使在电流感测变压器饱和的情况下，也可精确监控相电流。过电流跳闸单元还允许改变保护曲线的长时间延迟特性的功能，以便与诸如限流熔断器之类的配电系统中的其它过电流跳闸装置的特性提供更好的协调，从而增强系统的整体可靠性。例如，该功能可以改变以提供固定或FLAT，It，I2t和I4t功能。过电流跳闸装置还允许过电流保护曲线的长时间延迟和短时延保护部分的相对宽的调节范围。为了防止保护范围的任何重叠，防止长时间延迟部分在短时间延迟部分之前跳闸中断装置。

66. 发明授权

US5530613A Current limiting circuit controller 失效
标题翻译：限流电路控制器
公开(公告)号：US5530613A
公开(公告)日：1996-06-25
申请号：US251880
申请日：1994-06-01
申请人： James A. Bauer , Denis A. Mueller , Henry A. Wehrli, III , James D. B. Smith
发明人： James A. Bauer , Denis A. Mueller , Henry A. Wehrli, III , James D. B. Smith
IPC分类号： H02H3/02 , H02H9/02 , H02H3/093
CPC分类号： H02H3/025 , H02H9/026
摘要： A circuit controller for selectively connecting a power source to a load includes a non-overcurrent protective electrical switching mechanism and a conductive polymer current limiter connected in series with the load for limiting the current which flows through the switching mechanism whenever the power source is selectively connected to the load. The conductive polymer current limiter may include a plurality of parallel conductive polymer positive temperature coefficient (PTC) resistors. The circuit controller may include an electrical switching mechanism which, under short circuit conditions, remains selectively connected to the load. The short circuit current which is limited by the conductive polymer current limiter continues to flow through the electrical switching mechanism. The switching mechanism may include a contactor having separable contacts, and may further include a circuit interrupter, in order to provide a separate circuit disconnection mechanism. The electrical switching mechanism may have a coil and the circuit controller may include a voltage sensor. The conductive polymer current limiter may have an output which has a voltage substantially less than the voltage of the power source whenever the short circuit current flows from the power source and through the current limiter. The voltage sensor may be connected to the output of the conductive polymer current limiter and may deenergize the coil in order to open the separable contacts of the contactor and disconnect the power source from the load whenever the voltage of the output drops below a predetermined threshold. The contactor may be a motor-starting contactor.
摘要翻译：用于选择性地将电源连接到负载的电路控制器包括非电流保护电气开关机构和与负载串联连接的导电聚合物限流器，用于限制每当选择性地连接电源时流过开关机构的电流到负载。导电聚合物限流器可以包括多个平行导电聚合物正温度系数（PTC）电阻器。电路控制器可以包括电气开关机构，其在短路条件下保持选择性地连接到负载。由导电聚合物限流器限制的短路电流继续流过电开关机构。开关机构可以包括具有可分离触点的接触器，并且还可以包括电路断续器，以便提供单独的电路断开机构。电气开关机构可以具有线圈，并且电路控制器可以包括电压传感器。只要短路电流从电源流过电流限制器，导电聚合物限流器可具有的输出电压明显小于电源的电压。电压传感器可以连接到导电聚合物限流器的输出，并且可以在线圈的电压下降到低于预定阈值以下时断开线圈的电能，以便打开接触器的可分离触点并且断开电源与负载的连接。接触器可以是马达起动接触器。

67. 发明授权

US5428495A Electrical switching apparatus with digital trip unit and automatic frequency selection 失效
标题翻译：具有数字跳闸单元和自动频率选择的电气开关设备
公开(公告)号：US5428495A
公开(公告)日：1995-06-27
申请号：US954915
申请日：1992-09-30
申请人： William J. Murphy , Joseph C. Engel , Alan B. Shimp , Gary F. Saletta
发明人： William J. Murphy , Joseph C. Engel , Alan B. Shimp , Gary F. Saletta
IPC分类号： H01H71/36 , G01R19/165 , H01H71/74 , H01H73/00 , H01H83/02 , H02H1/00 , H02H3/00 , H02H3/093 , H02H3/26 , H01H47/20
CPC分类号： G01R19/16528 , H02H3/006 , H01H71/7409 , H02H1/0007 , H02H3/093 , Y10T307/852
摘要： A microprocessor based switch such as a circuit breaker generates digital rms representations of analog load currents from n samples of the analog currents per cycle synchronized to the line frequency, where n is an odd integer equal to a selected highest order harmonic to be detected plus 2. A routine determines whether the power system is 50 or 60 Hz, and automatically sets the sampling interval to provide exactly n samples per cycle for the connected source. Terminals for rapidly resetting an analog memory for calibration and field testing of a long delay trip are hidden behind a removable rating plug.
摘要翻译：基于微处理器的开关（例如断路器）产生模拟负载电流的数字有效值表示，该模拟负载电流来自与线路频率同步的每个周期的模拟电流的n个采样，其中n是等于要检测的所选最高次谐波加上2 例程确定电力系统是50或60Hz，并自动设置采样间隔，为连接的源提供每个周期的正好n个采样。用于快速复位模拟存储器的端子用于长时间延迟跳闸的校准和现场测试隐藏在可拆卸额定插头后面。

68. 发明授权

US5335135A Fault recording system for an electric power trip unit 失效
标题翻译：电力脱扣器故障记录系统
公开(公告)号：US5335135A
公开(公告)日：1994-08-02
申请号：US73638
申请日：1993-06-08
申请人： Michael A. Kinney
发明人： Michael A. Kinney
IPC分类号： H02H1/00 , H02H3/04 , H02H3/093 , H02N3/08
CPC分类号： H02H3/0935 , H02H3/04 , H02H3/34 , H02H1/0007
摘要： A low voltage electric power monitoring and circuit breaker system includes two processors. The first processor activates the circuit breaker when an overcurrent condition is detected and the second processor monitors the current sensed by the first processor and logs overcurrent values which arm the breaker as well as overcurrent values existing at the time the breaker is tripped.
摘要翻译：低压电力监控和断路器系统包括两个处理器。当检测到过电流状况时，第一处理器激活断路器，并且第二处理器监视由第一处理器感测的电流，并记录阻断断路器的过电流值以及断路器跳闸时存在的过电流值。

69. 发明授权

US5311392A Dual processor electric power trip unit 失效
标题翻译：双处理器电力跳闸单元
公开(公告)号：US5311392A
公开(公告)日：1994-05-10
申请号：US753286
申请日：1991-08-30
申请人： Michael A. Kinney , Stephen F. Gillette
发明人： Michael A. Kinney , Stephen F. Gillette
IPC分类号： H02H1/00 , H02H3/05 , H02H3/093 , H02H3/08
CPC分类号： H02H3/0935 , H02H1/0007 , H02H3/05
摘要： A low voltage electric power monitoring and circuit breaker system includes two processors. The first processor activates the circuit breaker when an overcurrent condition is detected and the second processor monitors the current sensed by the first processor and activates the circuit breaker for overcurrent conditions which should have caused the first processor to activate the breaker. If a current of this magnitude is detected, the second processor activates the circuit breaker as a backup protection for the first circuit breaker.
摘要翻译：低压电力监控和断路器系统包括两个处理器。当检测到过电流条件时，第一处理器激活断路器，并且第二处理器监视由第一处理器感测的电流并激活断路器以产生过电流状况，该过电流条件应使第一处理器激活断路器。如果检测到这种大小的电流，则第二处理器激活断路器作为第一断路器的备用保护。

70. 发明授权

US5216352A Solid state current controlled interruption system 失效
标题翻译：固态电流控制中断系统
公开(公告)号：US5216352A
公开(公告)日：1993-06-01
申请号：US619844
申请日：1990-11-29
申请人： George H. Studtmann , Donald H. Ward
发明人： George H. Studtmann , Donald H. Ward
IPC分类号： G05F1/445 , G01S1/00 , G01S19/02 , G01S19/21 , H02H3/06 , H02H3/093 , H02H9/00 , H02M5/293
CPC分类号： G01S19/02 , G01S19/21 , H02H3/066 , H02H3/0935 , H02H9/001 , H02M5/293 , Y10S323/901 , Y10S323/908
摘要： A solid state circuit interruption arrangement monitors a current path to provide protection to both a load and a solid state switch. The arrangement includes an energy absorber for absorbing energy from the current path in response to the solid state switch interrupting the current path, and a control circuit for periodically generating the interrupt signal to interrupt the current path for prescribed intervals and to control the current supplied to the load between a maximum current level and a minimum current level.
摘要翻译：固态电路中断装置监视当前路径以向负载和固态开关提供保护。该装置包括：能量吸收器，用于响应于中断电流路径的固态开关吸收来自电流通路的能量;以及控制电路，用于周期性地产生中断信号以中断电流路径达规定的间隔，并且控制提供给最大电流电平和最小电流电平之间的负载。

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