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71. 发明授权

US4689712A Circuit breaker with solid-state trip unit with a digital processing system shunted by an analog processing system 失效
标题翻译：具有固态跳闸单元的断路器，具有由模拟处理系统分流的数字处理系统
公开(公告)号：US4689712A
公开(公告)日：1987-08-25
申请号：US827436
申请日：1986-02-10
申请人： Pierre Demeyer
发明人： Pierre Demeyer
IPC分类号： H02H3/093 , H02H3/08
CPC分类号： H02H3/0935
摘要： Solid-state trip unit having a unit (29, 50, 48) for digital processing of signals emitted by current sensors (16). The digital processing system provides the long delay, short delay and instantaneous tripping functions and delivers a tripping order to the relay (14). An analog processing unit (70) is connected parallel with the digital processing unit to transmit an instantaneous tripping order to the relay (14). When the digital processing unit operates, the analog unit pick-up level is higher than the digital instantaneous tripping pick-up and this pick-up is reduced to a lower or equal value, if the digital unit is inactive.
摘要翻译：固态跳闸单元具有用于数字处理由电流传感器（16）发射的信号的单元（29,50,48）。数字处理系统提供长延时，短延时和瞬时跳闸功能，并向继电器（14）提供跳闸命令。模拟处理单元（70）与数字处理单元并联连接以向中继器（14）发送瞬时跳闸命令。当数字处理单元工作时，如果数字单元不活动，则模拟单元拾取电平高于数字瞬时跳闸拾取器，并且该拾取器减小到较低或相等的值。

72. 发明授权

US4642724A Trip signal generator for a circuit interrupter 失效
标题翻译：断路器的跳闸信号发生器
公开(公告)号：US4642724A
公开(公告)日：1987-02-10
申请号：US658239
申请日：1984-10-03
申请人： Joseph W. Ruta
发明人： Joseph W. Ruta
IPC分类号： H02H3/093
CPC分类号： H02H3/0935
摘要： A trip signal generator comprises a circuit possessing an inverse time-current characteristics for producing a trip signal in response to the occurrence of overcurrent in an alternating current line. The trip signal is produced after the passage of some time period, which varies inversely with the difference between the absolute magnitude of the overcurrent and a threshold current. The circuit includes a portion which produces pulses at a rate proportional to the difference between the absolute magnitude of the overcurrent in the line and the threshold current. The circuit produces no pulses when the line current is less than or equal to the threshold current. The circuit includes a counter for counting the pulses and for producing the trip signal after the counting of a selected number of pulses. Another portion of the circuit enables the counter when overcurrent is in the line, but resets the counter and prevents its operation when the line current is less than or equal to the threshold current. The counter may include a plurality of selectable outputs, each corresponding to a different count, thereby permitting the length of the delay before the trip signal is generated to be varied by selecting a different one of the outputs. The circuit also may include one or more range selectors for automatically selecting among two or more counter outputs so as to produce the trip signal after the passage of different ranges of time period corresponding to different ranges of overcurrent.
摘要翻译：跳闸信号发生器包括响应于交流线路中的过电流的发生而具有用于产生跳闸信号的反时限特性的电路。跳闸信号在经过一段时间后产生，该时间段与过电流的绝对幅度与阈值电流之间的差异成反比。该电路包括以与线路中的过电流的绝对幅度与阈值电流之间的差成比例的速率产生脉冲的部分。当线路电流小于或等于阈值电流时，该电路不产生脉冲。该电路包括用于对脉冲进行计数并在对所选择的脉冲数进行计数之后产生跳闸信号的计数器。电路的另一部分使得当过流在线路中的计数器时，但是当线路电流小于或等于阈值电流时，复位计数器并防止其运行。计数器可以包括多个可选择的输出，每个可选择的输出对应于不同的计数，从而允许通过选择不同的输出来产生跳闸信号之前的延迟的长度。电路还可以包括一个或多个范围选择器，用于在两个或多个计数器输出之间自动选择，以便在对应于不同的过电流范围的不同时间范围通过之后产生跳闸信号。

73. 发明授权

US4625283A Method and apparatus for digitally measuring alternating current 失效
标题翻译：用于数字测量交流电的方法和装置
公开(公告)号：US4625283A
公开(公告)日：1986-11-25
申请号：US375830
申请日：1982-05-07
申请人： James R. Hurley
发明人： James R. Hurley
IPC分类号： G01R19/257 , H02H3/093 , H02H3/08 , G01R19/04 , G06F15/324
CPC分类号： H02H3/0935 , G01R19/257
摘要： The method of the present invention encompasses comparing the instantaneous value of a waveform with at least two reference voltages, -R and +R, when crossing of these voltages occurs and processing this data in a data processor (46) to determine parameters of the waveform such as frequency and amplitude and of fundamental and DC offset.The apparatus of the present invention includes comparators (E.sub.1 and E.sub.2) which senses the voltage crossings and which has outputs (28 and 30) inputted to a latch (36) and to logic circuitry (32). A counter (50) supplies a count to the latch (36) and the output of the latch (36) is coupled to a microprocessor (46). The logic circuitry (32) has an output (34) coupled to the latch and to the microprocessor (46) first for causing, when a crossing occurs, the latch (36) to latch data identifying the particular crossing made and a count of the time it occurred and second to cause the microprocessor (46) to input this latched data and then to reset the logic circuitry.
摘要翻译：本发明的方法包括在交叉这些电压时将波形的瞬时值与至少两个参考电压-R和+ R进行比较，并在数据处理器（46）中处理该数据以确定波形的参数例如频率和幅度以及基波和直流偏移。本发明的装置包括感测电压交叉并具有输入到锁存器（36）和逻辑电路（32）的输出（28和30）的比较器（E1和E2）。计数器（50）向闩锁（36）提供计数，并且锁存器（36）的输出耦合到微处理器（46）。逻辑电路（32）具有耦合到锁存器和微处理器（46）的输出（34），首先用于当交叉发生时使锁存器（36）锁存识别所形成的特定交叉点的数据，并且计数其次是使微处理器（46）输入该锁存的数据，然后复位逻辑电路。

74. 发明授权

US4616324A Digital overcurrent tripping arrangement 失效
标题翻译：数字过流跳闸装置
公开(公告)号：US4616324A
公开(公告)日：1986-10-07
申请号：US790643
申请日：1985-10-23
申请人： Hans-Eberhard Simmel
发明人： Hans-Eberhard Simmel
IPC分类号： H02H3/093 , H02H6/00 , H02H5/04 , G06F15/56 , H02H7/085
CPC分类号： H02H3/0935 , H02H6/005
摘要： A digital overcurrent tripping arrangement having a nonpermanent digital memory. The arrangement further contains a resistor-capacitor stage that simulates the cooling-down process of a body. In accordance with the invention, a microprocessor uses a thermal excitation state digital value stored in the nonpermanent memory to calculate a digital normalized voltage value which is then stored in the nonpermanent digital memory. A digital comparator means within the microprocessor compares the digital normalized voltage value in the nonpermanent memory with a digital output of an analog-to-digital converter, the digital output corresponding to a voltage across the resistor-capacitor stage. If they agree, a charging switch between a current supply and the resistor-capacitor stage is opened. Upon reconnection of the main current supply after disconnection, the microprocessor stores the digital output of the analog-to-digital converter in the nonpermanent memory, the digital output corresponding to a residual voltage across the resistor-capacitor stage.
摘要翻译：具有非永久性数字存储器的数字过电流跳闸装置。该装置还包含一个模拟身体冷却过程的电阻 - 电容器级。根据本发明，微处理器使用存储在非永久存储器中的热激励状态数字值来计算数字归一化电压值，然后存储在非永久数字存储器中。微处理器内的数字比较器装置将非永久性存储器中的数字标准化电压值与模数转换器的数字输出进行比较，数字输出对应于电阻 - 电容级两端的电压。如果他们同意，电源和电阻 - 电容器级之间的充电开关打开。在断开后重新连接主电源，微处理器将模数转换器的数字输出存储在非永久存储器中，数字输出对应于电阻 - 电容级两端的残余电压。

75. 发明授权

US4571658A Control circuit for a circuit interrupter 失效
标题翻译：电路断路器的控制电路
公开(公告)号：US4571658A
公开(公告)日：1986-02-18
申请号：US506942
申请日：1983-06-22
申请人： Joseph W. Ruta
发明人： Joseph W. Ruta
IPC分类号： H02H3/093 , H02H3/44
CPC分类号： H02H3/093 , H02H3/44
摘要： A control circuit is provided for applying energy to operate a circuit interrupter in response to, and a selected time after, the onset of overcurrent in an alternating-current line. The control circuit includes a transducer for producing output current proportional to the current in the line. The power supply includes an energy storage circuit that stores energy derived from the output current. The stored energy, which is maintained within a first range when there is no overcurrent in the line, energizes the power supply. A time-current trip signal generator circuit responds to output current representative of moderate overcurrent in the line by producing a trip signal after the passage of a time period that is inversely related to the overcurrent. An instantaneous trip signal generator circuit produces a trip signal in response to output current between a minimum and a maximum magnitude and increasing at a rate greater than a selected rate, which conditions indicate the presence of high overcurrent in the line. A switch or gate is responsive to either trip signal to apply the output current and the stored energy to the circuit interrupter. With moderate overcurrent in the line, neither the first range of stored energy nor the output current is sufficient to operate the circuit interrupter. Accordingly, the trip signal from the time-current trip signal generator circuit first causes the energy storage circuit of the power supply to store a sufficiently greater amount of energy before operating the switch.
摘要翻译：提供控制电路，用于响应于在交流线路中的过电流的开始和之后的选定时间施加能量来操作电路断续器。控制电路包括用于产生与线路中的电流成比例的输出电流的换能器。电源包括存储从输出电流得到的能量的能量存储电路。当线路中没有过电流时，保持在第一范围内的存储能量激励电源。时间电流跳闸信号发生器电路在与过电流相反的时间段通过之后产生跳闸信号来响应表示线路中的中等过电流的输出电流。瞬时跳闸信号发生器电路响应于最小和最大幅度之间的输出电流产生跳闸信号，并且以大于选定速率的速率增加，这些条件表示线路中存在高过电流。开关或门对两个跳闸信号作出响应，以将输出电流和存储的能量施加到断路器。在线路中中等过电流时，存储能量的第一范围和输出电流都不足以操作断路器。因此，来自时间电流跳闸信号发生器电路的跳闸信号首先使电源的能量存储电路在操作开关之前储存足够大量的能量。

76. 发明授权

US4550360A Circuit breaker static trip unit having automatic circuit trimming 失效
标题翻译：断路器静态跳闸单元具有自动电路修整功能
公开(公告)号：US4550360A
公开(公告)日：1985-10-29
申请号：US612508
申请日：1984-05-21
申请人： John J. Dougherty
发明人： John J. Dougherty
IPC分类号： H02H3/00 , H02H3/093 , H02H3/16
CPC分类号： H02H3/006 , H02H3/0935
摘要： An analog signal processor used within a static trip unit is provided with an A/D converter, a digital processor and an electrically alterable non-volatile memory (EAROM) for providing trimming and calibration facility to the trip unit. The EAROM provides the ability to store parameters calculated by the user during the manufacturing process of the trip unit. Key measured or environmental variables are created and a correction algorithm is generated and stored along with data. The trip unit is then capable of self-calibration by applying the correction factor to compensate for variations in the component sensitivity. In one application, the current sensing transformer is precalibrated and provided with a correction factor and a correction algorithm. In another application, the thick film resistors within the long term trip mode network, the short term trip mode network and the power supply voltage regulator are "trimmed" by means of stored correction values.
摘要翻译：在静态跳闸单元中使用的模拟信号处理器具有A / D转换器，数字处理器和用于向跳闸单元提供修整和校准设备的电子可变非易失性存储器（EAROM）。 EAROM提供在跳闸单元的制造过程中存储由用户计算的参数的能力。创建关键测量值或环境变量，生成校正算法并与数据一起存储。然后，通过应用校正因子来补偿组件灵敏度的变化，跳闸单元能够进行自校准。在一个应用中，电流检测变压器被预校准，并提供校正因子和校正算法。在另一个应用中，长期跳闸模式网络中的厚膜电阻器，短期跳闸模式网络和电源电压调节器通过存储的校正值“修整”。

77. 发明授权

US4476511A Circuit interrupter with front panel numeric display 失效
标题翻译：电路断路器带前面板数字显示
公开(公告)号：US4476511A
公开(公告)日：1984-10-09
申请号：US555424
申请日：1983-11-23
申请人： Gary F. Saletta , Robert T. Elms , Joseph C. Engel
发明人： Gary F. Saletta , Robert T. Elms , Joseph C. Engel
IPC分类号： H02H3/093 , H02H3/10 , H02H3/08
CPC分类号： H02H3/105 , H02H3/0935
摘要： A circuit interrupter includes a trip unit consisting of a microcomputer and a liquid crystal numeric display mounted on the front panel of the trip unit. A power supply provides operating power for the trip unit even after a tripping operation. A microcomputer includes read-only memory for storing instructions to cause the microcomputer to sequentially display numeric values corresponding to the present electrical conditions through the circuit interrupter and the parameters defining the time-trip characteristic of the interrupter. Storage means are provided to store the level of phase or ground current resulting in a tripping operation and for displaying this value following a trip. Means are also provided for displaying a single digit numeric value indicating the cause of trip.
摘要翻译：电路断路器包括由微型计算机组成的跳闸单元和安装在跳闸单元的前面板上的液晶数字显示器。即使在跳闸操作之后，电源也为跳闸单元提供工作电源。微型计算机包括用于存储指令的只读存储器，以使微型计算机依次显示通过电路断续器对应于当前电气条件的数值以及定义断续器的时间跳闸特性的参数。提供存储装置以存储相位或接地电流的电平，导致跳闸操作并且用于在跳闸之后显示该值。还提供了用于显示指示行程原因的单个数字数值的装置。

78. 发明授权

US4473856A Overcurrent protection apparatus for DC motor 失效
标题翻译：直流电机过电流保护装置
公开(公告)号：US4473856A
公开(公告)日：1984-09-25
申请号：US335358
申请日：1981-12-29
申请人： Kenichiroh Takahashi , Hiromitsu Nakano , Isao Yoshida
发明人： Kenichiroh Takahashi , Hiromitsu Nakano , Isao Yoshida
IPC分类号： H02H7/085 , H02H3/093 , H02H7/08
CPC分类号： H02H7/0833
摘要： An overcurrent protection apparatus for a DC motor which can be used with a speed control system of a DC motor to prevent an overcurrent condition arising when the DC motor is run with a heavy load or locked by an overload from burning or overheating windings of the motor. The apparatus is constructed using at least one integrated circuit and includes a current mirror circuit for detecting an overcurrent and for cutting off the supply current of the DC motor. A timing circuit prevents overcurrents lasting only a short time from triggering the apparatus to shut down the motor. Once the apparatus is triggered to shut off the motor, the motor will remain off for an indefinite period of time until the apparatus is reset.
摘要翻译：一种用于直流电动机的过电流保护装置，其可与直流电动机的速度控制系统一起使用，以防止当直流电动机由重负载运行或被电动机的燃烧或过热绕组过载锁定时产生的过电流条件。该装置使用至少一个集成电路构造，并且包括用于检测过电流并用于切断直流电动机的供电电流的电流镜电路。定时电路可防止持续时间短的过电流触发装置关闭电机。一旦设备触发关闭电机，电机将保持关闭无限期，直到设备复位为止。

79. 发明授权

US4443828A Low voltage circuit breaker 失效
标题翻译：低压断路器
公开(公告)号：US4443828A
公开(公告)日：1984-04-17
申请号：US353820
申请日：1982-03-02
申请人： Michel Legrand , Paul Canonne , Christian Brault
发明人： Michel Legrand , Paul Canonne , Christian Brault
IPC分类号： H01H71/24 , H01H71/12 , H01H71/74 , H01H73/36 , H02H3/08 , H02H3/093
CPC分类号： H01H71/12 , H01H71/7409 , H02H3/093 , H01H2071/124 , H01H71/123 , H01H71/7463
摘要： A low voltage circuit breaker with a current sensing unit having a magnetic circuit with three branches, the secondary winding being mounted on the intermediate branch and the primary winding being formed by a conductor selectively passing through one or two of the openings provided between the secondary winding and the outer branches. The circuit breaker comprises an instantaneous electromagnetic trip mechanism and a static long time and short time delay trip unit, the latter unit being governed by a signal attenuated by a rating selection device.
摘要翻译：一种具有电流检测单元的低压断路器，具有具有三个分支的磁路，次级绕组安装在中间分支上，并且初级绕组由选择性地穿过设置在次级绕组之间的一个或两个开口的导体形成和外分支。断路器包括瞬时电磁跳闸机构和静态长时间和短时间延迟跳闸单元，后者单元由被额定值选择装置衰减的信号控制。

80. 发明授权

US4438476A Selectable integrating characteristic timer for protective relays 失效
标题翻译：可选择的积分特性定时器用于保护继电器
公开(公告)号：US4438476A
公开(公告)日：1984-03-20
申请号：US378589
申请日：1982-05-17
申请人： Thomas B. Breen
发明人： Thomas B. Breen
IPC分类号： H02H3/093
CPC分类号： H02H3/0935
摘要： Disclosed is a characteristic timer for a protective relay which provides protection for a portion of an A.C. transmission line. The characteristic timer has digital logic elements adapted to external circuitry for selecting one or more desired phase angles which determines the activation time of a characteristic timer, which, in turn, determines the operational characteristic of the protective relay. The digital logic of the characteristic timer is further adapted to an external circuitry for selecting an integrating or non-integrating type function for the characteristic timer.
摘要翻译：公开了一种用于保护继电器的特征定时器，其为交流输电线路的一部分提供保护。特征定时器具有适于外部电路的数字逻辑元件，用于选择一个或多个期望的相位角，其确定特征定时器的激活时间，其又确定保护继电器的操作特性。特征定时器的数字逻辑还适用于选择用于特征定时器的积分或非积分型功能的外部电路。

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