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公开(公告)号：US10388445B2
公开(公告)日：2019-08-20
申请号：US15386063
申请日：2016-12-21
申请人： EATON CORPORATION
发明人： Zhi Gao , Daniel A. Hosko , Theodore J. Miller
摘要： A current sensing circuit for use with a Rogowski coil arranged around a conductor having a primary current includes input terminals structured to receive an output voltage of the Rogowski coil, an analog to digital converter structured to convert a differential voltage to a digital differential voltage signal, a digital integrator structured to receive the digital differential voltage signal, to implement a discrete-time transfer function that is a transform of a transfer function of an analog integrator, and to output a digital integrator output signal, and a direct current blocker filter structured to remove a direct current bias from the digital integrator output signal and to output a digital current output signal that is proportional to the primary current in the conductor.
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公开(公告)号：US10332698B2
公开(公告)日：2019-06-25
申请号：US15386953
申请日：2016-12-21
申请人： EATON CORPORATION
发明人： Xin Zhou , Zhi Gao , James L. Lagree , Robert W. Mueller
IPC分类号： G01R31/327 , H01H9/54 , H01H1/00 , H01H71/04
摘要： An electronic trip unit for a circuit interrupter includes a line side voltage sensing module for measuring first voltages on a line side of separable contacts, a load side voltage sensing module for measuring second voltages on a load side of the separable contacts, a current sensor, and a main controller. The main controller is further structured and configured to: (i) for each of a plurality of arc interruption events in the circuit interrupter, determine a mass loss due to contact erosion during the arc interruption event based on one or more of the first voltages, the second voltages and the current measured by the current sensor, (ii) determine a total mass loss based on each determined mass loss due to contact erosion, and (iii) monitor a remaining life of the separable contacts based on the determined total mass loss due to contact erosion.
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公开(公告)号：US10141128B1
公开(公告)日：2018-11-27
申请号：US15809535
申请日：2017-11-10
申请人： Eaton Corporation
发明人： Xin Zhou , Zhi Gao , James L. Lagree , Brian E. Carlson
摘要： A circuit breaker apparatus may include a housing, a circuit inside the housing for protecting the conductors and the load of the circuit, a display attached to outside of the housing, a controller, and a power control device. The display may be an electronically-alterable display that does not require power in situations other than changing its state. The power control device may provide power to the controller and the display when the apparatus is being tampered with. When the controller is powered, it may cause the power control device to cause the display to change from a state that indicates that the apparatus is authenticated to another state that indicates that the apparatus has been tampered with. The power control device may include a battery and a switch, or a power harvester, which can be configured to provide power to the controller when the apparatus is being tampered with.
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公开(公告)号：US10332716B2
公开(公告)日：2019-06-25
申请号：US15405513
申请日：2017-01-13
申请人： EATON CORPORATION
发明人： Daniel A. Hosko , Theodore J. Miller , Zhi Gao , Randy P. Shvach
IPC分类号： H02H3/33 , H01H71/74 , H02H1/00 , H02H3/02 , H02H1/06 , H02H3/05 , G05B15/02 , H02H3/00 , H02H3/16
摘要： A circuit interrupter includes an electronic trip unit structured to receive power from a power supply. The electronic trip unit includes a start-up process and is structured to proceed through the start-up process when the electronic trip unit begins receiving power from the power supply and a timing circuit including a capacitor structured to begin charging when the electronic trip unit begins receiving power from the power supply. The electronic trip unit includes a processor that is structured to read a voltage across the capacitor when the start-up process has completed and to determine an elapsed time of the start-up process based on the read voltage across the capacitor.
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公开(公告)号：US20190043683A1
公开(公告)日：2019-02-07
申请号：US15668885
申请日：2017-08-04
申请人： Eaton Corporation
发明人： Zhi Gao , James L. Lagree
摘要： A circuit breaker assembly including a housing assembly and a tamper detection system. The housing assembly defines a sealed enclosure. The sealed enclosure includes a division interface. The sealed enclosure is structured to be in one of a closed, first configuration, wherein the sealed enclosure defines a generally enclosed space, and an open, second configuration, wherein the sealed enclosure allows access to the enclosed space, and wherein, as the sealed enclosure moves between the first configuration to the second configuration, the sealed enclosure is reconfigured at the division interface. The tamper detection system includes a protective assembly and an indicator assembly. The protective assembly is structured to be coupled to the sealed enclosure at the division interface. The indicator assembly includes a rupturable construct. The rupturable construct is structured to transform from an intact, first configuration to a ruptured, second configuration.
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公开(公告)号：US10325743B2
公开(公告)日：2019-06-18
申请号：US15668885
申请日：2017-08-04
申请人： Eaton Corporation
发明人： Zhi Gao , James L. Lagree
IPC分类号： H01H71/02 , H01H71/04 , G06K19/077 , H01H71/74
摘要： A circuit breaker assembly including a housing assembly and a tamper detection system. The housing assembly defines a sealed enclosure. The sealed enclosure includes a division interface. The sealed enclosure is structured to be in one of a closed, first configuration, wherein the sealed enclosure defines a generally enclosed space, and an open, second configuration, wherein the sealed enclosure allows access to the enclosed space, and wherein, as the sealed enclosure moves between the first configuration to the second configuration, the sealed enclosure is reconfigured at the division interface. The tamper detection system includes a protective assembly and an indicator assembly. The protective assembly is structured to be coupled to the sealed enclosure at the division interface. The indicator assembly includes a rupturable construct. The rupturable construct is structured to transform from an intact, first configuration to a ruptured, second configuration.
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公开(公告)号：US20190148089A1
公开(公告)日：2019-05-16
申请号：US16170150
申请日：2018-10-25
申请人： Eaton Corporation
发明人： Xin Zhou , Zhi Gao , James L. Lagree , Brian E. Carlson
摘要： A circuit breaker apparatus may include a housing, a circuit inside the housing for protecting the conductors and the load of the circuit, a display attached to outside of the housing, a controller, and a power control device. The display may be an electronically-alterable display that does not require power in situations other than changing its state. The power control device may provide power to the controller and the display when the apparatus is being tampered with. When the controller is powered, it may cause the power control device to cause the display to change from a state that indicates that the apparatus is authenticated to another state that indicates that the apparatus has been tampered with. The power control device may include a battery and a switch, or a power harvester, which can be configured to provide power to the controller when the apparatus is being tampered with.
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公开(公告)号：US10088546B2
公开(公告)日：2018-10-02
申请号：US14267451
申请日：2014-05-01
申请人： EATON CORPORATION
IPC分类号： G01R19/00 , G01R29/16 , G01R35/00 , G01R21/133 , G01R31/04
摘要： A system for a three-phase electric power system includes a plurality of voltage sensors sensing three-phase voltages of the three-phase electric power system; a plurality of current sensors sensing three-phase currents of the three-phase electric power system; and a number of analog-to-digital converters converting the sensed three-phase voltages and the sensed three-phase currents of the three-phase electric power system to corresponding digital values. A processor calculates from the corresponding digital values at least two phase angles between voltage and current for at least two of three phases of the three-phase electric power system, diagnoses polarities and phase associations for at least two of the current sensors based on, for each of the at least two current sensors, a predetermined wiring configuration of the three-phase electric power system and a corresponding one of the at least two phase angles being within a corresponding predetermined angular range, and outputs corresponding diagnosis results.
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公开(公告)号：US09829519B2
公开(公告)日：2017-11-28
申请号：US14722481
申请日：2015-05-27
申请人： EATON CORPORATION
CPC分类号： G01R25/00 , G01R21/133 , G01R31/041 , G01R31/2829 , G01R35/005
摘要： A system and method for a branch current monitoring system employing a 2-Phase Wye, a Single-Phase 3-Wire or a Single-Phase 2-Wire wiring configuration that is configured to identify a phase association and a polarity for a branch circuit current sensor using the phase angle between voltage and current. Also, a system and method for verifying phase association and polarity determinations for branch circuit current sensors that utilizes real and reactive power measurements.
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公开(公告)号：US20190026749A1
公开(公告)日：2019-01-24
申请号：US15652540
申请日：2017-07-18
申请人： EATON CORPORATION
摘要： A security tag and electronic system detect unauthorized tampering of Molded Case Circuit Breakers (MCCBs) and authenticate MCCBs against counterfeiting or gray market items. The system can involve digital generation of a public key and a corresponding private key, both keys comprise large positive integers, applying the private key to an MCCB-specific message string and creating a digital signature code, generating an identification code from the MCCB-specific message string and the digital signature code, building the identification code into one or more security tags, and installing the security tags on MCCBs, and authenticating MCCBs through a verification step and a certification step. The verification step reads the security tags, and verifies the identification code. The certification step checks the identification code against a revocation list that contains previously compromised identification codes.
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