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公开(公告)号：US20080012669A1
公开(公告)日：2008-01-17
申请号：US11824680
申请日：2007-07-02
CPC分类号： H01H71/22 , H01H2011/0068
摘要： An automatic temperature compensation method that automatically adjusts trip point thresholds of a motor circuit protector in response to changes in temperature. The relationship between two curves is exploited to match temperature sensor readings from a temperature sensor circuit with burden resistor percentage values derived from a burden resistor circuit. A temperature inflection point is determined from the intersection of (1) the temperature sensor curve plotting the voltage output of the temperature sensor versus temperature and (2) the burden resistance curve plotting burden resistance versus temperature. A temperature value along the temperature sensor curve is transformed into the corresponding burden resistance on the burden resistance curve. The burden resistance is expressed as a percentage variance from a burden resistance at an ambient temperature. An adjusted trip point threshold is calculated from the computed burden resistor percentage, and the adjusted trip point threshold is stored in a memory.
摘要翻译： 一种自动温度补偿方法，可根据温度变化自动调整电机电路保护器的跳闸点阈值。 利用两条曲线之间的关系来匹配来自温度传感器电路的温度传感器读数，并从负载电阻电路得到负载电阻百分比值。 从（1）温度传感器曲线绘制温度传感器的电压输出与温度的交点确定温度拐点，（2）负载电阻曲线绘制负载电阻对温度。 沿着温度传感器曲线的温度值转化为负荷阻力曲线上相应的负荷阻力。 耐负荷表现为与环境温度下的负荷电阻的百分比差异。 根据计算的负载电阻百分比计算调整的跳闸点阈值，并将调整的跳闸点阈值存储在存储器中。
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公开(公告)号：US07859802B2
公开(公告)日：2010-12-28
申请号：US11824680
申请日：2007-07-02
CPC分类号： H01H71/22 , H01H2011/0068
摘要： An automatic temperature compensation method that automatically adjusts trip point thresholds of a motor circuit protector in response to changes in temperature. The relationship between two curves is exploited to match temperature sensor readings from a temperature sensor circuit with burden resistor percentage values derived from a burden resistor circuit. A temperature inflection point is determined from the intersection of (1) the temperature sensor curve plotting the voltage output of the temperature sensor versus temperature and (2) the burden resistance curve plotting burden resistance versus temperature. A temperature value along the temperature sensor curve is transformed into the corresponding burden resistance on the burden resistance curve. The burden resistance is expressed as a percentage variance from a burden resistance at an ambient temperature. An adjusted trip point threshold is calculated from the computed burden resistor percentage, and the adjusted trip point threshold is stored in a memory.
摘要翻译： 一种自动温度补偿方法，可根据温度变化自动调整电机电路保护器的跳闸点阈值。 利用两条曲线之间的关系来匹配来自温度传感器电路的温度传感器读数，并从负载电阻电路得到负载电阻百分比值。 从（1）温度传感器曲线绘制温度传感器的电压输出与温度的交点确定温度拐点，（2）负载电阻曲线绘制负载电阻对温度。 沿着温度传感器曲线的温度值转化为负荷阻力曲线上相应的负荷阻力。 耐负荷表现为与环境温度下的负荷电阻的百分比差异。 根据计算的负载电阻百分比计算调整的跳闸点阈值，并将调整的跳闸点阈值存储在存储器中。
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3.发明授权Method and system of calibrating sensing components in a circuit breaker system 有权在断路器系统中校准传感元件的方法和系统公开(公告)号：US07788055B2
公开(公告)日：2010-08-31
申请号：US11824652
申请日：2007-07-02
申请人： Susan Jean Walker Colsch , William Davison , David Joseph Dunne , Kevin John Malo , Steve M. Meehleder , Ryan James Moffitt , Richard Allen Studer, II , Gary Michael Stumme
发明人： Susan Jean Walker Colsch , William Davison , David Joseph Dunne , Kevin John Malo , Steve M. Meehleder , Ryan James Moffitt , Richard Allen Studer, II , Gary Michael Stumme
CPC分类号： H01H69/01
摘要： A method and system to calibrate a motor circuit protection device is disclosed. An example method calibrates a signal chain of a circuit breaker. The signal chain includes a current transformer, a burden resistor, a stored energy circuit and a controller. The circuit breaker includes a memory coupled to the controller. A calibration instruction routine is written in a first location of the memory. A test current is injected in the circuit breaker signal chain. The test current peak of the test current in the circuit breaker signal chain is measured. Data indicative of the test current peak is stored in a second location of the memory. The test current peak data is read from the second location of the memory. The test current peak data is compared with nominal current data related to the signal chain remotely from the circuit breaker. A calibration factor is determined based on the comparison.
摘要翻译： 公开了一种用于校准电动机电路保护装置的方法和系统。 示例性方法校准断路器的信号链。 信号链包括电流互感器，负载电阻，存储能量电路和控制器。 断路器包括耦合到控制器的存储器。 校准指令例程被写入存储器的第一位置。 在断路器信号链中注入测试电流。 测量断路器信号链中测试电流的测试电流峰值。 指示测试电流峰值的数据被存储在存储器的第二位置。 从存储器的第二位置读取测试电流峰值数据。 将测试电流峰值数据与从断路器远程的信号链相关的标称电流数据进行比较。 基于比较来确定校准因子。
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4.发明申请Method and system of calibrating sensing components in a circuit breaker system 有权在断路器系统中校准传感元件的方法和系统公开(公告)号：US20080215278A1
公开(公告)日：2008-09-04
申请号：US11824652
申请日：2007-07-02
申请人： Susan Jean Walker Colsch , William Davison , David Joseph Dunne , Kevin John Malo , Steve M. Meehleder , Ryan James Moffitt , Richard Allen Studer , Gary Michael Stumme
发明人： Susan Jean Walker Colsch , William Davison , David Joseph Dunne , Kevin John Malo , Steve M. Meehleder , Ryan James Moffitt , Richard Allen Studer , Gary Michael Stumme
CPC分类号： H01H69/01
摘要： A method and system to calibrate a motor circuit protection device is disclosed. An example method calibrates a signal chain of a circuit breaker. The signal chain includes a current transformer, a burden resistor, a stored energy circuit and a controller. The circuit breaker includes a memory coupled to the controller. A calibration instruction routine is written in a first location of the memory. A test current is injected in the circuit breaker signal chain. The test current peak of the test current in the circuit breaker signal chain is measured. Data indicative of the test current peak is stored in a second location of the memory. The test current peak data is read from the second location of the memory. The test current peak data is compared with nominal current data related to the signal chain remotely from the circuit breaker. A calibration factor is determined based on the comparison.
摘要翻译： 公开了一种用于校准电动机电路保护装置的方法和系统。 示例性方法校准断路器的信号链。 信号链包括电流互感器，负载电阻，存储能量电路和控制器。 断路器包括耦合到控制器的存储器。 校准指令例程被写入存储器的第一位置。 在断路器信号链中注入测试电流。 测量断路器信号链中测试电流的测试电流峰值。 指示测试电流峰值的数据被存储在存储器的第二位置。 从存储器的第二位置读取测试电流峰值数据。 将测试电流峰值数据与从断路器远程的信号链相关的标称电流数据进行比较。 基于比较来确定校准因子。
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5.发明授权Method and system of current transformer output magnitude compensation in a circuit breaker system 有权断路器系统中电流互感器输出幅度补偿的方法和系统公开(公告)号：US07869169B2
公开(公告)日：2011-01-11
申请号：US11824651
申请日：2007-07-02
摘要： A method and system to detect currents in the saturation region of a current transformer for a circuit breaker is disclosed. An example method is sensing a fault condition with a current transformer in a circuit breaker. The characteristic curve of the current transformer in a saturation mode is determined based on peak current. A current is received on the transformer. A secondary current is output from the transformer. It is determined whether the secondary current is indicative of a fault current in the saturation mode of the transformer. The breaker is tripped if the secondary current is indicative of a fault current.
摘要翻译： 公开了一种用于检测用于断路器的电流互感器的饱和区域中的电流的方法和系统。 一种示例性方法是使用断路器中的电流互感器来检测故障状况。 基于峰值电流确定饱和模式下的电流互感器的特性曲线。 在变压器上接收电流。 从变压器输出次级电流。 确定二次电流是否表示变压器的饱和模式下的故障电流。 如果二次电流表示故障电流，则断路器跳闸。
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6.发明申请Method and system of current transformer output magnitude compensation in a circuit breaker system 有权断路器系统中电流互感器输出幅度补偿的方法和系统公开(公告)号：US20080012666A1
公开(公告)日：2008-01-17
申请号：US11824651
申请日：2007-07-02
摘要： A method and system to detect currents in the saturation region of a current transformer for a circuit breaker is disclosed. An example method is sensing a fault condition with a current transformer in a circuit breaker. The characteristic curve of the current transformer in a saturation mode is determined based on peak current. A current is received on the transformer. A secondary current is output from the transformer. It is determined whether the secondary current is indicative of a fault current in the saturation mode of the transformer. The breaker is tripped if the secondary current is indicative of a fault current.
摘要翻译： 公开了一种用于检测用于断路器的电流互感器的饱和区域中的电流的方法和系统。 一种示例性方法是使用断路器中的电流互感器来检测故障状况。 基于峰值电流确定饱和模式下的电流互感器的特性曲线。 在变压器上接收电流。 从变压器输出次级电流。 确定二次电流是否表示变压器的饱和模式下的故障电流。 如果二次电流表示故障电流，则断路器跳闸。
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公开(公告)号：US20120123762A1
公开(公告)日：2012-05-17
申请号：US12945616
申请日：2010-11-12
摘要： A circuit breaker system for providing thermal protection to a conductor conducting current from a power source to a load. While the power source is connected to the load, a microcontroller is powered by the current passing through the conductor to thermally model the temperature of the conductor. If the microcontroller determines that the temperature of the conductor has risen to an undesirable or unsafe level, the circuit breaker disconnects the power source from the load and the current no longer passes through the conductor. With no current passing through the conductor, the microcontroller no longer receives power from the conductor. Instead, the microcontroller continues to model the temperature of the conductor as the conductor cools to an ambient temperature by receiving power from an energy storage device. Accordingly, the microcontroller continuously models the temperature of the conductor until the temperature of the conductor cools to the ambient temperature.
摘要翻译： 一种断路器系统，用于向导体传导电流到负载的电流提供热保护。 当电源连接到负载时，微控制器由通过导体的电流供电，以对导体的温度进行热模拟。 如果微控制器确定导体的温度升高到不需要或不安全的水平，则断路器将电源与负载断开，并且电流不再通过导体。 没有电流通过导体，微控制器不再从导体接收电力。 相反，当导体通过从能量存储装置接收功率而将导体冷却到环境温度时，微控制器继续对导体的温度建模。 因此，微控制器连续地对导体的温度进行建模，直到导体的温度冷却到环境温度。
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公开(公告)号：US08665574B2
公开(公告)日：2014-03-04
申请号：US12945616
申请日：2010-11-12
IPC分类号： H02H3/08
摘要： A circuit breaker system for providing thermal protection to a conductor conducting current from a power source to a load. While the power source is connected to the load, a microcontroller is powered by the current passing through the conductor to thermally model the temperature of the conductor. If the microcontroller determines that the temperature of the conductor has risen to an undesirable or unsafe level, the circuit breaker disconnects the power source from the load and the current no longer passes through the conductor. With no current passing through the conductor, the microcontroller no longer receives power from the conductor. Instead, the microcontroller continues to model the temperature of the conductor as the conductor cools to an ambient temperature by receiving power from an energy storage device. Accordingly, the microcontroller continuously models the temperature of the conductor until the temperature of the conductor cools to the ambient temperature.
摘要翻译： 一种断路器系统，用于向导体传导电流到负载的电流提供热保护。 当电源连接到负载时，微控制器由通过导体的电流供电，以对导体的温度进行热模拟。 如果微控制器确定导体的温度升高到不需要或不安全的水平，则断路器将电源与负载断开，并且电流不再通过导体。 没有电流通过导体，微控制器不再从导体接收电力。 相反，当导体通过从能量存储装置接收功率而将导体冷却到环境温度时，微控制器继续对导体的温度建模。 因此，微控制器连续地对导体的温度进行建模，直到导体的温度冷却到环境温度。
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公开(公告)号：US20120008245A1
公开(公告)日：2012-01-12
申请号：US12832801
申请日：2010-07-08
IPC分类号： H02H5/04
摘要： A thermal sensing system for providing thermal protection to an electronic circuit breaker that does not require any additional components. The layout of the conductive traces on the printed circuit board are dimensioned and configured so that the ratio of primary current to primary conductor thermal mass heating is correlated with the ratio of secondary current to secondary thermal mass heating. A voltage at a semiconductor junction in the rectifier behind the secondary transformer is measured, and a temperature or heat is calculated based on the voltage. Because this temperature or heat calculation is correlated with the temperature or heat of the primary conductor, a trip routine can be added based on the measured voltage for thermal protection of the primary conductors. A thermal history of the ‘primary thermal mass’ is also provided for robust thermal protection of the circuit breaker load and primary conductors.
摘要翻译： 一种用于向不需要任何附加部件的电子断路器提供热保护的热感测系统。 印刷电路板上的导电迹线的布局尺寸和构造使得初级电流与主导体热质量加热的比率与次级电流与次级热质量加热的比率相关。 测量次级变压器后面的整流器中的半导体结处的电压，并且基于电压计算温度或热量。 由于该温度或热计算与初级导体的温度或热量相关，因此可以根据测得的主导体热保护电压来增加跳闸程序。 还提供了“初级热质量”的热历史，用于断路器负载和主导体的鲁棒热保护。
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