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公开(公告)号：US4734639A
公开(公告)日：1988-03-29
申请号：US868834
申请日：1986-05-29
CPC分类号： G01R19/25
摘要： A master metering module is taught which utilizes a programmed microprocessor and externally operated switches to alert the module as to what kind of system is being monitored thereby. For example, is the system being monitored a .DELTA.-connected electrical system or a Y-connected electrical system. This is useful in providing output indications of line-to-line voltage or line-to-neutral voltage, for example. When measuring voltages whether line-to-line or line-to-neutral one voltage value is substituted from another. A differential amplifier is utilized to do this. In one case the differential amplifier subtracts one line voltage from another line voltage, but in another case it subtracts neutral or zero ground potential from a line voltage. A switching arrangement is provided which interconnects one terminal of the differential amplifier with the neutral input terminal and with a line input terminal through appropriate conditioning of the microprocessor.
摘要翻译： 教授了一种主计量模块，其使用编程的微处理器和外部操作的开关来向模块警告由此监控什么样的系统。 例如，正在监视的系统是DELTA连接的电气系统或Y连接的电气系统。 这在例如提供线对线电压或线对中性电压的输出指示中是有用的。 当测量电压是否从另一个代替线对线或中线一个电压值时。 使用差分放大器来做到这一点。 在一种情况下，差分放大器从另一条线路电压中减去一条线路电压，但在另一种情况下，它会从一条线路电压中减去中性点或零点地电位。 提供了一种开关装置，其通过微处理器的适当调节将差分放大器的一个端子与空载输入端子和线路输入端子相互连接。
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2.发明授权
公开(公告)号：US5493468A
公开(公告)日：1996-02-20
申请号：US129819
申请日：1993-09-30
CPC分类号： H02H3/006 , H02H6/005 , H02H7/0853 , H01H2071/006 , H01H2300/03 , H01H51/005 , H02H1/0061 , Y02B70/3241 , Y02B90/224 , Y04S20/14 , Y04S20/227
摘要： In a multiple contactor installation where each contactor provides overcurrent protection, overload information in passed from one active contactor to the next as a percentage of the trip level of the respective contactors.
摘要翻译： 在多接触器安装中，每个接触器提供过电流保护，从一个有源接触器传递到下一个接触器的过载信息作为各接触器跳闸电平的百分比。
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3.发明授权Electromagnetic contactor tandem control system for thermal protection of a bidirectional motor drive 失效电磁接触器串联控制系统，用于双向电机驱动的热保护
公开(公告)号：US4819118A
公开(公告)日：1989-04-04
申请号：US201237
申请日：1988-06-02
申请人： Denis A. Mueller , Gary F. Saletta
发明人： Denis A. Mueller , Gary F. Saletta
CPC分类号： H02H6/005 , H01H51/005 , H02H7/0853
摘要： A bidirectional motor has two electromagnetic contactors, one for forward, the other for reverse operation. Thermal protection is provided by a thermal image generator and a thermal protection unit in each contactor operating in tandem via a bidirectional line of communication keeping the thermal images in parallelism by one active contactor "talking" to the inactive contactor, the "listener".
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公开(公告)号：US4940391A
公开(公告)日：1990-07-10
申请号：US268102
申请日：1988-11-07
CPC分类号： H02H7/0854 , F04D25/06 , F04D27/001
摘要： In a compressor system, surge detection is provided by sensing the current of the motor driving the compressor and reading oscillations of the current about the average thereof and above and below two opposite threshold levels from such average current and counting the polarity changes within a time interval containing so many samples of the current and defining a sliding window.
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5.发明授权Electromagnetic contactor with wide range overload current relay board utilizing left shifting and method 失效具有宽范围过载电流继电器板的电磁接触器利用左移和方法
公开(公告)号：US4757420A
公开(公告)日：1988-07-12
申请号：US16421
申请日：1987-02-19
申请人： Gary F. Saletta , Joseph C. Engel , John G. Leddy
发明人： Gary F. Saletta , Joseph C. Engel , John G. Leddy
CPC分类号： G01R19/25
摘要： A motor controller system is taught in which an overload relay board utilizes a current monitor which produces an output signal which is related to the current being sensed thereby over a wide range of currents which may vary for instance between 1 and 1,000 amperes. This indicative signal is converted to a DC voltage level which is then provided to the analog-to-digital portion of a microprocessor for being converted to a digital number for being processed by the microprocessor for causing the contacts of the motor controller to open at appropriate current values. The system utilizes an integrating capacitor which samples the output current from the sensor 32 times in succession providing a voltage which is proportional to the line current. This voltage which may exceed the input voltage level of the analog-to-digital converter is nevertheless supplied to the analog-to-digital converter and sampled internally by the microprocessor at double the line cycle time period until the 32 samplings have expired. If at any time during this doubled sampling process the output of the analog-to-digital converter digitally saturates, the left shifting technique is provided with other memory locations within the microprocessor to provide an approximate double value of voltage so that at the end of the 32 line half cycles a very close approximation of the actual current is contained within storage locations within the microprocessor for effective utilization thereby.
摘要翻译： 一种电动机控制器系统被教导，其中过载继电器板利用电流监视器，该电流监视器产生一个输出信号，该输出信号与可能在1到1000安培之间变化的宽电流范围内的感测电流相关。 该指示信号被转换为直流电压电平，然后将其提供给微处理器的模拟 - 数字部分，以将其转换为数字数字，以由微处理器处理，以使马达控制器的触点在适当的位置打开 当前值。 该系统利用积分电容器，连续地对传感器32的输出电流进行连续取样，提供与线电流成比例的电压。 然而，可能超过模数转换器的输入电压电平的电压被提供给模数转换器，并由微处理器在内部采样两倍的行周期时间段，直到32个采样已经到期。 如果在这个双倍的采样过程中，模数转换器的输出数字饱和的任何时间，左移位技术都提供有微处理器内的其他存储单元，以提供近似的电压值，以便在 32行半周期中，实际电流的非常接近的近似值被包含在微处理器内的存储位置内以便有效利用。
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公开(公告)号：US4827369A
公开(公告)日：1989-05-02
申请号：US17376
申请日：1987-02-20
申请人： Gary F. Saletta , Joseph J. Matsko
发明人： Gary F. Saletta , Joseph J. Matsko
摘要： A circuit interrupter includes a circuit arrangement for sampling a conditioned current value and determining operating characteristics related to the current flow through an electrical circuit. Also included is a circuit arrangement for comparing the operating characteristics to preselectable tripping parameters and circuit arrangement for initiating a trip condition when an operating characteristic exceeds a corresponding tripping parameter. Additionally, a circuit arrangement for selecting and displaying operating information in an understandable format and in an easily accessible position on the circuit interrupter is also included.
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7.发明授权Electrical switching apparatus with digital trip unit and automatic frequency selection 失效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
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。
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公开(公告)号：US4794484A
公开(公告)日：1988-12-27
申请号：US17306
申请日：1987-02-20
CPC分类号： H02H3/0935 , H01H2071/006
摘要： A circuit interrupter includes a circuit arrangement for sampling a conditioned current value and determining operating characteristics related to the current flow through an electrical circuit. Also included is a circuit arrangement for comparing the operating characteristics to preselectable tripping parameters and for initiating a trip condition when an operating characteristic exceeds a corresponding tripping parameter. Additionally, a circuit arrangement for initiating a hardware override trip condition using a minimum number of components upon sensing an override signal, is also included; the override signal representing a limit selectable from a range of values.
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9.发明授权Electromagnetic contactor with current regulated electromagnetic coil for holding the contacts closed 失效具有电流调节电磁线圈的电磁接触器用于保持触点闭合
公开(公告)号：US4720761A
公开(公告)日：1988-01-19
申请号：US16423
申请日：1987-02-19
申请人： Gary F. Saletta , Joseph C. Engel , John G. Leddy
发明人： Gary F. Saletta , Joseph C. Engel , John G. Leddy
CPC分类号： H01H47/325
摘要： An electromagnetic contactor is taught which includes a conduction angle controlled triac or similar gated device which is connected in series circuit relationship with the winding of an electromagnetic solenoid or coil which is responsible for closing the contactor contacts and for keeping them closed. The current flowing through the triac is fed to a microprocessor which digitizes the current and compares it to a stored standard. The conduction angle is then decremented or incremented as necessary to change the conduction angle to cause less or more current to flow per half cycle until the amount of current flowing as sensed on a half-cycle-by-half-cycle basis is equal to the current represented by the stored standard.
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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
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。
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