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    • 5. 发明授权
    • Electronic trip unit of a circuit breaker
    • 断路器的电子跳闸单元
    • US07965483B2
    • 2011-06-21
    • US12209672
    • 2008-09-12
    • Srinath Rao TopucharlaCraig Benjamin WilliamsSeshagiri Rao Komaravolu
    • Srinath Rao TopucharlaCraig Benjamin WilliamsSeshagiri Rao Komaravolu
    • H02H3/08
    • H02H1/04H02H1/06
    • An electronic trip unit which includes a processing unit and a comparator circuit. The processing unit receives an input voltage, and a reset signal to reset the electronic trip unit, and generates a trip signal when sensed current of the electronic trip unit exceeds a predetermined threshold. The comparator circuit includes a first comparator which receives the trip signal from the processing unit and compares the trip signal with a predetermined reference voltage determined based on the reset signal, and a second comparator which compares a voltage generated by a power supply with the predetermined reference voltage. The comparator circuit determines whether the trip signal is for a valid trip event based comparison results of the first comparator and the second comparator.
    • 一种电子跳闸单元,包括处理单元和比较器电路。 处理单元接收输入电压和复位信号以复位电子跳闸单元,并且当电子跳闸单元的感测电流超过预定阈值时产生跳闸信号。 比较器电路包括:第一比较器,其从处理单元接收跳闸信号,并将跳闸信号与基于复位信号确定的预定参考电压进行比较;以及第二比较器,将电源产生的电压与预定参考值进行比较 电压。 比较器电路确定跳闸信号是否用于基于第一比较器和第二比较器的有效跳闸事件的比较结果。
    • 6. 发明申请
    • CIRCUIT BREAKER TRIP UNIT
    • 断路器跳闸单元
    • US20120226453A1
    • 2012-09-06
    • US13038706
    • 2011-03-02
    • Craig Benjamin WilliamsZachary Herman Cull
    • Craig Benjamin WilliamsZachary Herman Cull
    • G01R31/00G06F19/00
    • H02H3/083H02H3/05
    • A trip unit for a circuit breaker having at least one sensor for monitoring a current in a protected circuit and a tripping system is provided. The trip unit includes a first controller operably coupled to receive a current signal from the at least one sensor and electrically coupled to the tripping system. The first controller includes a first processor that transmits a first signal to the tripping system in response to a detection of a first undesired condition. A second controller is operably coupled to receive the current signal from the at least one sensor and is electrically coupled to the tripping system in parallel with the first controller. The second controller includes a second processor that detects the first condition and transmits a second signal to the tripping system after a predetermined first time period.
    • 提供一种用于断路器的跳闸单元,其具有至少一个用于监视受保护电路中的电流的传感器和跳闸系统。 跳闸单元包括可操作地耦合以接收来自至少一个传感器的电流信号并电耦合到跳闸系统的第一控制器。 第一控制器包括第一处理器,其响应于检测到第一不期望的状况而将第一信号发送到跳闸系统。 第二控制器可操作地耦合以从所述至少一个传感器接收电流信号,并且与第一控制器并联地电耦合到跳闸系统。 第二控制器包括第二处理器,其在预定的第一时间段之后检测第一状态并将第二信号发送到跳闸系统。