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    • 1. 发明授权
    • Electronic tripping device for a circuit breaker
    • 断路器电子跳闸装置
    • US06603649B1
    • 2003-08-05
    • US09701401
    • 2001-03-05
    • Thomas MüllerUlrich BaumgärtlWolfgang RöhlHolger Hochgraef
    • Thomas MüllerUlrich BaumgärtlWolfgang RöhlHolger Hochgraef
    • H02H730
    • H02H7/30H01H2071/006H01H2300/044H02H3/006H02H3/0935
    • An electronic tripping device for a circuit breaker contains circuitry for simulating the response curve of a fuse. This circuitry can be controlled by a single setting mechanism representing the nominal currents or rated currents of fuses. This improves the coordination of protection in sophisticated power supply equipment containing both circuit breakers and fuses. Tripping devices equipped with microprocessors or operating in an analog fashion can be configured for the mode of operation. The new protection system achieves particularly safe operation for the user in that the setting mechanism is combined with a rating plug for the “fuse” mode, thus directly setting the tripping device to one current value. In a manner similar to a true fuse, consequently, the setting mechanism is provided with appropriate labeling. The simulated curves may contain a point of inflection below a limit in a lagging manner, to increase the nominal switching capacity and selectivity limit of a circuit breaker.
    • 用于断路器的电子跳闸装置包含用于模拟保险丝的响应曲线的电路。 该电路可以通过表示保险丝的额定电流或额定电流的单个设置机制来控制。 这提高了包含断路器和保险丝的复杂电源设备中的保护协调。 配备微处理器或以模拟方式工作的跳闸装置可以配置为操作模式。 新的保护系统为用户实现了特别安全的操作,因为设置机构与“保险丝”模式的额定值组合,从而将跳闸装置直接设置为一个电流值。 因此,以与真正的保险丝相似的方式,设置机构具有适当的标签。 模拟曲线可以以滞后方式包含低于极限的拐点,以增加断路器的额定开关容量和选择性极限。
    • 8. 发明授权
    • Method for preventing making on electrical short circuits existing in branches and corresponding device
    • 防止分支上存在的电气短路和相应装置的制造方法
    • US06597552B1
    • 2003-07-22
    • US10019897
    • 2001-12-28
    • Gerd GriepentrogHolger HochgraefReinhard Maier
    • Gerd GriepentrogHolger HochgraefReinhard Maier
    • H02H300
    • H02H11/005
    • A method is for preventing tapping into existing short circuits in branches. A power supply momentarily is connected in a test circuit at a defined instant of the power supply voltage and at least the current in the test time period is detected and evaluated as a criterion for a short circuit. The short-circuit current is limited by the use of an additional test resistor which is arranged in the test circuit in series preferably with a semiconductor switch. Solely the test current and/or the test voltage is used for identification of the short circuit. In the associated arrangement, a test resistor having a defined resistance, whose resistance is significantly greater than the power supply impedance, is arranged in the test circuit in series with the semiconductor switch.
    • 一种方法是防止分支中现有的短路。 在电源电压的定义时刻瞬间将电源连接在测试电路中,并且至少检测测试时间段中的电流并将其评估为短路的标准。 短路电流通过使用附加的测试电阻器来限制,该测试电阻器优选地与半导体开关串联在测试电路中。 测试电流和/或测试电压仅用于识别短路。 在相关布置中,具有限定电阻的测试电阻器,其电阻明显大于电源阻抗,被布置在与半导体开关串联的测试电路中。