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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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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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3.发明授权Circuit interrupter with digital trip unit and means to enter trip settings 失效具有数字跳闸单元的断路器和进入跳闸设置的手段
公开(公告)号：US4351012A
公开(公告)日：1982-09-21
申请号：US140553
申请日：1980-04-15
CPC分类号： H02H3/006 , H01H2071/006
摘要： A circuit breaker includes a digital electronic trip unit having a microprocessor. The front panel of the trip unit includes a potentiometer connected across a reference voltage, and a numeric display device. The potentiometer is adjusted by an operator to enter a value of a parameter defining the time-current characteristic of the circuit breaker. An analog-to-digital converter receives the voltage supplied by the potentiometer and converts it to a digital quantity for use by the microcomputer in performing limit checks with the current flow through the contacts of the breaker. The microcomputer formats the converted digital value of the potentiometer voltage and supplies it to a front panel-visible numeric display so that the value of the potentiometer setting as interpreted by the microcomputer in defining the time-current trip characteristic is presented on the numeric display to provide real-time feedback to the operator as he adjusts the parameter value.
摘要翻译： 断路器包括具有微处理器的数字电子跳闸单元。 跳闸单元的前面板包括连接在参考电压上的电位器和数字显示装置。 电位器由操作者进行调整，以输入定义断路器时间电流特性的参数值。 模数转换器接收由电位计提供的电压并将其转换为数字量，供微型计算机使用，并通过断路器的触点进行限流检查。 微型计算机对转换后的电位器电压进行格式化并将其提供给前面板可视数字显示屏，以便在数字显示屏上显示由微型计算机解释的电位器设置值，用于定义时间 - 电流跳闸特性 在调整参数值时，向操作员提供实时反馈。
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公开(公告)号：US4525650A
公开(公告)日：1985-06-25
申请号：US569547
申请日：1984-01-10
IPC分类号： H05B41/282 , H05B37/02
CPC分类号： H05B41/2827 , Y02B20/185 , Y10S315/07
摘要： Starting and operating method and apparatus for discharge lamps comprises a current-limiting and rectifying means which provides at its output a low-ripple current-limited direct current. To effect lamp starting, a series-connected inductor and capacitor form a high "Q" resonant circuit with the capacitor connected across the lamp to be operated. This starting circuit connects through a blocking capacitor and charging resistor across the low-ripple source of DC. A pair of transistors which comprise an oscillator are connected emitter-to-collector across the source of DC, with the common-connected emitter and collector connected to the blocking capacitor. A drive air-core transformer has separate feedback windings in the starting and operating circuits and drive windings are associated with the transistors. A trigger diode is used to initially pulse one of the transistors which initially oscillate to generate square waves having a frequency corresponding to the resonant frequency of the starting circuit. After the lamp strikes, the transistors operate in a self-oscillating mode with the operating frequency determined by the rate of current flow into the operating feedback winding.
摘要翻译： 用于放电灯的启动和操作方法和装置包括限流和整流装置，其在其输出端提供低纹波限流直流电流。 为了实现灯起动，串联的电感器和电容器形成高“Q”谐振电路，电容器连接在待操作的灯上。 该启动电路通过隔离电容器和DC的低纹波源连接充电电阻。 包括振荡器的一对晶体管在DC源极之间连接发射极到集电极，共同连接的发射极和集电极连接到阻塞电容器。 驱动空心变压器在启动和运行电路中具有单独的反馈绕组，驱动绕组与晶体管相关联。 触发二极管用于初始地振荡晶体管中的一个，其初始振荡以产生具有与启动电路的谐振频率对应的频率的方波。 在灯点亮之后，晶体管以自振荡模式工作，工作频率由电流流入工作反馈绕组的速率决定。
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公开(公告)号：US4057750A
公开(公告)日：1977-11-08
申请号：US684513
申请日：1976-05-10
申请人： Robert T. Elms , Joseph C. Engel , Gary F. Saletta
发明人： Robert T. Elms , Joseph C. Engel , Gary F. Saletta
CPC分类号： H05B41/048 , Y10T307/344 , Y10T307/375 , Y10T307/664
摘要： To prevent high-intensity-discharge (HID) lamps from extinguishing for prolonged periods due to a power interruption or an appreciable drop in line voltage, a rectifier-battery combination provides standby power for operating a high-frequency inverter. The output of the inverter connects to the HID lamps through impedance means which passes a greatly reduced high-frequency current as compared to the normal lamp operating current, in order to sustain the operation of the lamps at a very reduced power level. Upon restoration of the normal line voltage, the lamps again operate with normal power consumption. The same wiring can be used for both the normal lamp operating current and the high-frequency sustaining current or separate wiring systems can be used if desired. The high-frequency current can be supplied simultaneously with the normal operating current or the high-frequency current can be supplied only during periods of power interruption. In the latter case, the high-frequency sustaining current is continued for a period of at least 0.1 second after restoration of the normal line voltage to prevent the HID lamps from extinguishing.
摘要翻译： 为了防止高强度放电（HID）灯由于电源中断或线电压明显下降而长时间熄灭，整流电池组合提供用于操作高频逆变器的备用电源。 逆变器的输出通过与通常的灯工作电流相比通过大大降低的高频电流的阻抗装置连接到HID灯，以便以非常低的功率水平维持灯的操作。 在恢复正常线路电压后，灯泡将以正常的功耗再次工作。 同样的布线可以用于正常的灯工作电流和高频维持电流，或者如果需要，可以使用单独的接线系统。 高频电流可以与正常工作电流同时供电，或只能在电源中断期间提供高频电流。 在后一种情况下，在恢复正常线路电压之后，高频维持电流持续至少0.1秒的时间，以防止HID灯熄灭。
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公开(公告)号：US4331999A
公开(公告)日：1982-05-25
申请号：US140626
申请日：1980-04-15
CPC分类号： H02H1/066
摘要： A circuit breaker includes a microprocessor-based trip unit and a power supply for supplying operating power to the trip unit and the trip coil of the circuit breaker from either the internal current transformers of the circuit breaker or a plurality of external sources. The trip unit includes a numeric display for displaying a sequential series of parameter values under normal conditions. Under low-power conditions, the power supply provides pulses of operating power sufficient to enable the trip unit to execute all of its limit check functions and present a flashing display of a single parameter value.
摘要翻译： 断路器包括基于微处理器的跳闸单元和用于从断路器的内部电流互感器或多个外部源向断路单元和断路器的跳闸线圈提供工作电力的电源。 跳闸单元包括用于在正常条件下显示一系列参数值的数字显示。 在低功率条件下，电源提供足够的工作电源脉冲，使跳闸单元能够执行其所有限位检查功能，并呈现单个参数值的闪烁显示。
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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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8.发明授权Circuit interrupter with solid state digital trip unit and positive power-up feature 失效具有固态数字跳闸单元和正上电功能的断路器
公开(公告)号：US4377836A
公开(公告)日：1983-03-22
申请号：US140632
申请日：1980-04-15
CPC分类号： H02H3/105 , H02H3/0935
摘要： A circuit interrupter includes a microcomputer controlled trip unit having a front panel numeric display and a plurality of LED displays for providing post tripping indication of cause-of-trip and trip current value. Reliable operation is provided during power up conditions. Means are also provided for accurate performance of long delay and ground fault tripping operation.
摘要翻译： 电路断路器包括具有前面板数字显示器和多个LED显示器的微型计算机控制跳闸单元，用于提供脱扣和跳闸电流值的跳闸指示。 在上电条件下提供可靠的操作。 还提供了准确执行长延时和接地故障跳闸操作的手段。
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9.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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公开(公告)号：US5050172A
公开(公告)日：1991-09-17
申请号：US348940
申请日：1989-05-08
申请人： Robert T. Elms , Gary F. Saletta
发明人： Robert T. Elms , Gary F. Saletta
IPC分类号： G11C5/14
CPC分类号： G11C5/141
摘要： The coil of an electromagnetic contactor is controlled by a microcomputer which stores control data in an internal RAM memory. An integrated circuit chip provides a tightly regulated +5 volt supply voltage to the microcomputer and generates reset signals on power up and power loss. A logic circuit distinguishes a power loss reset from a power up reset and transfers the microcomputer to a STOP mode in which only the RAM is energized to retain the control data. Reserve power to energize the RAM during a power loss of up to several minutes in duration is provided by a large capacitor which is kept charged by the regulated +5 volt supply. Voltage on the capacitor is checked through the integrated circuit on power up to determine if sufficient voltage was maintained to assure the integrity of the RAM.
摘要翻译： 电磁接触器的线圈由将控制数据存储在内部RAM存储器中的微型计算机控制。 集成电路芯片为微机提供严格调节的+5伏电源电压，并在上电和掉电时产生复位信号。 逻辑电路将功率损耗复位与上电复位区分开，并将微机转移到只有RAM通电的STOP模式，以保持控制数据。 在长达几分钟的功率损耗期间为RAM供电的预留功率由保持通过调节的+5V电源充电的大电容器提供。 上电后，通过集成电路检查电容上的电压，以确定是否保持足够的电压以确保RAM的完整性。
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