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公开(公告)号：US3665356A
公开(公告)日：1972-05-23
申请号：US3665356D
申请日：1969-04-23
申请人： RUCKER CO
CPC分类号： H01F38/38 , H01F27/36 , H01F38/30 , H01F2038/305 , H01H83/144 , H01H2083/146
摘要： A differential transformer having a balancing sleeve interposed between its primary and secondary windings to provide a substantially identical degree of coupling between each of the primary windings and the secondary winding. The balancing sleeve is made of magnetic and/or electrically conductive materials.
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公开(公告)号：US20020057182A1
公开(公告)日：2002-05-16
申请号：US09992296
申请日：2001-11-14
IPC分类号： H01F027/28 , H01F027/02
CPC分类号： H01F27/34 , H01F27/266 , H01F27/427 , H01F30/16 , H01F38/30 , H01H83/144 , H01H2083/146
摘要： A current transformer for a ground fault circuit breaker used on a circuit having at least one line conductor and a neutral conductor includes a toroidal core having a circular opening defining a center point and a multi-turn winding wound on the core. A first guide member is disposed on one side of the core, and a second guide member is disposed on another side of the core. The first and second guide members each have a hole for receiving the line conductor and a hole for receiving the neutral conductor formed therein. The guide members thus position the conductors with respect to the core. The present invention also includes a method of correcting asymmetries in the current transformer. The method includes measuring the magnitude and orientation of any asymmetries, and then altering the current transformer based on the measured magnitude and orientation of the asymmetries so as to eliminate the asymmetries.
摘要翻译： 用于具有至少一个线路导体和中性导体的电路上的接地故障断路器的电流互感器包括具有限定中心点的圆形开口的环形铁芯和缠绕在铁心上的多匝绕组。 第一引导构件设置在芯的一侧，并且第二引导构件设置在芯的另一侧。 第一和第二引导构件各自具有用于接收线路导体的孔和用于接收其中形成的中性导体的孔。 因此，引导构件相对于芯体定位导体。 本发明还包括校正电流互感器中的不对称性的方法。 该方法包括测量任何不对称的幅度和取向，然后基于测量的不对称的大小和取向改变电流互感器，以消除不对称性。
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公开(公告)号：US4295112A
公开(公告)日：1981-10-13
申请号：US71360
申请日：1979-08-30
申请人： Yoshito Yamada , Hiroshi Okumura , Shoji Murakami
发明人： Yoshito Yamada , Hiroshi Okumura , Shoji Murakami
CPC分类号： H01F27/36 , H01F27/365 , H01F38/30 , H01F2038/305 , H01H2083/146 , H01H83/144
摘要： A residual current transformer comprises an annular magnetic core which has not a gap nor sectional part crossing said magnetic core but has one or more narrow sectional area parts.
摘要翻译： 剩余电流互感器包括环形磁芯，其没有间隙或截面部分与所述磁芯交叉但具有一个或多个窄截面积部分。
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公开(公告)号：US3525964A
公开(公告)日：1970-08-25
申请号：US3525964D
申请日：1968-08-15
发明人： STEVENSON ROBERT A
CPC分类号： H01F38/38 , H01F38/30 , H01H83/144 , H01H2083/146
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公开(公告)号：US1832662A
公开(公告)日：1931-11-17
申请号：US42863430
申请日：1930-02-15
发明人： OSKAR SCHMUTZ
CPC分类号： H01F27/365 , H01H83/144 , H01H2083/146
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公开(公告)号：US06414579B1
公开(公告)日：2002-07-02
申请号：US09455426
申请日：1999-12-06
IPC分类号： H01F3820
CPC分类号： H01F27/34 , H01F27/266 , H01F27/427 , H01F30/16 , H01F38/30 , H01H83/144 , H01H2083/146
摘要： A current transformer for a ground fault circuit breaker used on a circuit having at least one line conductor and a neutral conductor includes a toroidal core having a circular opening defining a center point and a multi-turn winding wound on the core. A first guide member is disposed on one side of the core, and a second guide member is disposed on another side of the core. The first and second guide members each have a hole for receiving the line conductor and a hole for receiving the neutral conductor formed therein. The guide members thus position the conductors with respect to the core. Also included is a method of correcting asymmetries in the current transformer. The method includes measuring the magnitude and orientation of any asymmetries, and then altering the current transformer based on the measured magnitude and orientation of the asymmetries so as to eliminate the asymmetries.
摘要翻译： 用于具有至少一个线路导体和中性导体的电路上的接地故障断路器的电流互感器包括具有限定中心点的圆形开口的环形铁芯和缠绕在铁心上的多匝绕组。 第一引导构件设置在芯的一侧，并且第二引导构件设置在芯的另一侧。 第一和第二引导构件各自具有用于接收线路导体的孔和用于接收其中形成的中性导体的孔。 因此，引导构件相对于芯体定位导体。 还包括校正电流互感器中的不对称性的方法。 该方法包括测量任何不对称的幅度和取向，然后基于测量的不对称的大小和取向改变电流互感器，以消除不对称性。
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公开(公告)号：US20020057162A1
公开(公告)日：2002-05-16
申请号：US09455426
申请日：1999-12-06
IPC分类号： H01F027/02
CPC分类号： H01F27/34 , H01F27/266 , H01F27/427 , H01F30/16 , H01F38/30 , H01H83/144 , H01H2083/146
摘要： A current transformer for a ground fault circuit breaker used on a circuit having at least one line conductor and a neutral conductor includes a toroidal core having a circular opening defining a center point and a multi-turn winding wound on the core. A first guide member is disposed on one side of the core, and a second guide member is disposed on another side of the core. The first and second guide members each have a hole for receiving the line conductor and a hole for receiving the neutral conductor formed therein. The guide members thus position the conductors with respect to the core. Also included is a method of correcting asymmetries in the current transformer. The method includes measuring the magnitude and orientation of any asymmetries, and then altering the current transformer based on the measured magnitude and orientation of the asymmetries so as to eliminate the asymmetries.
摘要翻译： 用于具有至少一个线路导体和中性导体的电路上的接地故障断路器的电流互感器包括具有限定中心点的圆形开口的环形铁芯和缠绕在铁心上的多匝绕组。 第一引导构件设置在芯的一侧，并且第二引导构件设置在芯的另一侧。 第一和第二引导构件各自具有用于接收线路导体的孔和用于接收其中形成的中性导体的孔。 因此，引导构件相对于芯体定位导体。 还包括校正电流互感器中的不对称性的方法。 该方法包括测量任何不对称的幅度和取向，然后基于测量的不对称的大小和取向改变电流互感器，以消除不对称性。
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公开(公告)号：US3683302A
公开(公告)日：1972-08-08
申请号：US3683302D
申请日：1970-12-15
CPC分类号： H01H83/144 , H01H2083/146
摘要： Sensor apparatus for a ground fault interrupter operative to open or interrupt an electric circuit in response to the occurrence of a ground fault therealong. The sensor apparatus is operative to detect differences in the mangitudes of the currents respectively flowing in the entrance and return paths of an electric power circuit having at least a pair of conductors providing such paths; and it includes magnetic and electrostatic shield structure adapted to pass such conductors therethrough to form the primary winding of a differential transformer, and it further includes a transformer core coaxially related to the shield structure and equipped with a secondary winding to define a differential transformer in conjunction with the power conductors.
摘要翻译： 用于接地故障中断器的传感器装置可操作以响应于其中的接地故障的发生而打开或中断电路。 传感器装置可操作以检测分别在具有提供这种路径的至少一对导体的电力电路的入口和返回路径中流动的电流的差异; 并且其包括磁性和静电屏蔽结构，其适于使这种导体穿过其中以形成差动变压器的初级绕组，并且还包括与屏蔽结构同轴相关的变压器芯，并配备有次级绕组以组合差分变压器 与电源导体。
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公开(公告)号：US06639770B2
公开(公告)日：2003-10-28
申请号：US09992296
申请日：2001-11-14
IPC分类号： H02H300
CPC分类号： H01F27/34 , H01F27/266 , H01F27/427 , H01F30/16 , H01F38/30 , H01H83/144 , H01H2083/146
摘要： A current transformer for a ground fault circuit breaker used on a circuit having at least one line conductor and a neutral conductor includes a toroidal core having a circular opening defining a center point and a multi-turn winding wound on the core. A first guide member is disposed on one side of the core, and a second guide member is disposed on another side of the core. The first and second guide members each have a hole for receiving the line conductor and a hole for receiving the neutral conductor formed therein. The guide members thus position the conductors with respect to the core. The present invention also includes a method of correcting asymmetries in the current transformer. The method includes measuring the magnitude and orientation of any asymmetries, and then altering the current transformer based on the measured magnitude and orientation of the asymmetries so as to eliminate the asymmetries.
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公开(公告)号：US5747980A
公开(公告)日：1998-05-05
申请号：US453608
申请日：1995-05-30
申请人： Bernard Gershen
发明人： Bernard Gershen
CPC分类号： H01F38/22 , H01F27/425 , H01H83/144 , H01H2083/146
摘要： A differential transformer includes a magnetic core within which difference signal detection inaccuracies resulting from non-homogeneity within the core are corrected by compensation. A phase wire extends proximate the magnetic core for transporting a first current in a first direction. A neutral wire extends proximate the magnetic core center for transporting a second current in a second direction which is substantially opposite the first direction. A shunt wire is electrically connected to one of: the phase wire and the neutral wire depending on whether the transformer is undersensitive or oversensitive. The shunt wire shunts a portion of the current flowing in one of the phase and neutral wires such that first and second signals are generated in the transformer as a result of said first and second currents that are substantially equal.
摘要翻译： 差动变压器包括磁芯，通过补偿来校正由芯内的不均匀性导致的差分信号检测不准确度的磁芯。 相位线在磁芯附近延伸，用于沿第一方向传送第一电流。 中性线在磁芯中心附近延伸，用于沿与第一方向基本相反的第二方向传送第二电流。 分流导线根据变压器是否不敏感或过敏而电连接到相线和中性线之一。 并联线分流在相线和中性线中的一个中流动的电流的一部分，使得由于所述第一和第二电流基本上相等，在变压器中产生第一和第二信号。
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