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    • 2. 发明授权
    • Connection tester for an electronic trip unit
    • 电子跳闸单元连接测试仪
    • US06429659B1
    • 2002-08-06
    • US09521493
    • 2000-03-09
    • James Arthur MarpleMichael Roger Koller
    • James Arthur MarpleMichael Roger Koller
    • G01R3102
    • G01R31/04G01R31/3278H01H83/20
    • A trip unit connection tester (10) is arranged to test the electrical connections (12) and (14) between a trip unit (16) and actuator (18) mounted within a circuit breaker (20). Tester (10) includes a power source (64) including a positive lead (68), and a negative lead (70). The positive lead (68) is coupled to a two-loop switch (58). The two loop switch (58) toggles between a first loop (98), and a second loop (100). The first loop (98) includes the power source (64), the two-loop switch (58), and the energy storage element (82) wherein the energy storage element (82) stores energy coming from the power source (64). The second loop (100) includes the two-loop switch (58), and the energy storage element (82), connections (12) and (14), and the actuator (18), wherein energy stored within the energy storage element (82) is released to the actuator (18).
    • 跳闸单元连接测试器(10)被布置成测试在断路器(20)内安装的跳闸单元(16)和致动器(18)之间的电连接(12)和(14)。 测试器(10)包括包括正极引线(68)和负极引线(70)的电源(64)。 正极引线(68)耦合到双回路开关(58)。 两个回路开关(58)在第一回路(98)和第二回路(100)之间切换。 第一回路(98)包括电源(64),双回路开关(58)和能量存储元件(82),其中能量存储元件(82)存储来自电源(64)的能量。 第二回路(100)包括双回路开关(58)和能量存储元件(82),连接件(12)和(14)以及致动器(18),其中存储在能量存储元件 82)释放到致动器(18)。
    • 3. 发明授权
    • Method for performing instantaneous protection in a trip unit
    • 在跳闸单元中执行瞬时保护的方法
    • US06078489A
    • 2000-06-20
    • US137396
    • 1998-08-20
    • Alan Joseph MesserliJames Arthur MarpleMichael Roger Koller
    • Alan Joseph MesserliJames Arthur MarpleMichael Roger Koller
    • H02H3/08H02H3/02H02H3/093H02H6/00H02H3/18
    • H02H6/005H02H3/0935
    • A method of performing instantaneous protection in a trip unit is presented. The electronic trip unit includes a microcontroller and associated ROM having trip unit application code, e.g., main functionality firmware, including initializing parameters, and boot code, stored therein and EEPROM having operational parameter code stored therein. An instantaneous protection algorithm (program) stored in the memory of the trip unit has a `WAIT` state and a `RUN` state. In the RUN state samples of the sensed current that classify as points that are accumulated in a point register. Accumulation of a determined number of points qualifies as a peak. These peaks are accumulated in a peak register. If a point is not detected within a determined time period, then the count of peaks accumulated in the peak register is decremented, thereby provided a cooling function. When the count in the peak register exceeds the sensor limit a signal is generated by the microcontroller to initiate the trip.
    • 提出了一种在跳闸单元中执行瞬时保护的方法。 电子跳闸单元包括微控制器和相关联的ROM,其具有跳闸单元应用代码,例如主存功能固件,包括其中存储的初始化参数和引导代码以及存储有操作参数代码的EEPROM。 存储在跳闸单元的存储器中的瞬时保护算法(程序)具有“等待”状态和“运行”状态。 在RUN状态下,感应电流的样本被分类为积分在点寄存器中的点。 确定数量积分的积分符合高峰。 这些峰值累积在峰值寄存器中。 如果在确定的时间段内没有检测到点,则峰值寄存器中累积的峰值的计数减少,从而提供冷却功能。 当峰值寄存器中的计数超过传感器限制时,微控制器产生信号以启动跳闸。