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公开(公告)号：US11565911B2
公开(公告)日：2023-01-31
申请号：US16953475
申请日：2020-11-20
发明人： Peter Herkel , Norbert Diwisch
IPC分类号： G01R31/327 , B66B5/00 , H01H9/00
摘要： An electronic test node (1) for a safety chain (22) in a passenger conveyor system includes an electrical connection (2) for an associated safety switch (4). A processor (6) is configured to monitor a signal carried by the electrical connection (2) so as to detect whether the associated safety switch (4) is open or closed. The electronic test node (1) further includes a test switch (8) connected in series with the electrical connection (2), wherein the processor (6) is configured to run a test by selectively opening the test switch (8) and monitoring for a change in the signal carried by the electrical connection (2).
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公开(公告)号：US20220404418A1
公开(公告)日：2022-12-22
申请号：US17772210
申请日：2021-05-25
发明人： Jong-Il Park
IPC分类号： G01R31/327 , G01R31/3842 , B60L58/18 , B60L3/00
摘要： A relay diagnosis apparatus for a parallel pack assembly including a first battery pack having a first battery module and a first positive relay and a second battery pack having a second battery module and a second positive relay includes a diagnosis unit including a diagnosis switch and a diagnosis resistor connected between first and second battery pack terminals, a first detector to detect a current of the first battery module, a second detector to detect a current of the second battery module, and a control unit to collect a first and second detection values from the first and second detectors, respectively, during a first diagnosis period in which the first and second positive relays are open and the diagnosis switch is closed. The control unit determines a stuck-closed fault of the first or second positive relays based on the first and second detection values and a first threshold.
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公开(公告)号：US11519965B2
公开(公告)日：2022-12-06
申请号：US17227739
申请日：2021-04-12
摘要： A testing device including a main housing, and a probe housing, wherein the probe housing is rotatably coupled to the main housing. The testing device further includes a first test probe and a second test probe. The first test probe may be configured to be inserted into an alternating-current receptacle. The second test probe is coupled to the probe housing. The second test probe may be configured to be inserted into a universal serial bus receptacle.
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公开(公告)号：US11486929B1
公开(公告)日：2022-11-01
申请号：US17232874
申请日：2021-04-16
申请人： Kevin Curtis
发明人： Kevin Curtis
IPC分类号： G01R31/327 , H01H50/14 , H01H50/08 , H01H50/18 , H01H50/44
摘要： A tester for a relay comprises an enclosure, a testing circuit that includes a controller, electronic switch components, a power source, indicator LEDs, a test start switch, a relay selector switch, and five electric leads each connected with one terminal of the relay. With the relay selector switch toggled to indicate the type of relay being tested, with power supplied to each lead, and with the test start switch actuated, the controller sets each lead to ground, in turn, and then count the number of other leads that are grounded as a result. The controller then illuminates the at least one indicator to indicate either the passing relay test or the failed relay test based on the counts measured. Once the leads connected to the relay coil are identified, cyclic testing of the relay can be performed.
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公开(公告)号：US11469592B1
公开(公告)日：2022-10-11
申请号：US17706041
申请日：2022-03-28
申请人： Plamen Doynov
发明人： Plamen Doynov
摘要： A system and method for persistent monitoring, detecting, and mitigating detecting and isolating a high-altitude electromagnetic pulse (“HEMP”) along electrical lines electrically connected to a monitored infrastructure so as to protect the monitored infrastructure, the method including a phase unit receiving sensor signals from a plurality of analog sensor circuits electrically connected to each of the electrical lines, respectively, upstream of and associated with the monitored infrastructure. The method includes determining, limiting, shunting, and limiting the impinged transient surges and instantaneously indicates locally the status of the monitored parameters using visual and audio sound via a cybersecure optical communication channel supporting a plurality of wavelengths, from which one wavelength is utilized for a one-directional communication and a different wavelength optical signal establishing a controlled temporary two-directional communication for surge protection system maintenance and update.
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公开(公告)号：US11456688B2
公开(公告)日：2022-09-27
申请号：US17106301
申请日：2020-11-30
发明人： Kasi Viswanadha Raju Gadiraju , Joseph Lawrence Chacon , Steven Wade Sutherland , Arvind Kumar Tiwari
IPC分类号： H02P9/02 , G01R31/327 , H02K7/18
摘要： A system and method are provided for operating a power generating asset having a generator operably coupled to a power grid. The generator having a rotor and a stator. The stator being operably coupled to a transformer, and ultimately to the power grid, via a sync-switch assembly. The sync-switch assembly having a plurality of switching devices electrically coupled in parallel. Accordingly, a controller detects an approach of at least one operating parameter of the power generating asset to a first parameter threshold. In response to detecting the approach of the operating parameter to the first parameter threshold, the controller independently changes an operating state of a first switching device of the plurality of switching devices of the sync-switch assembly. Each switching device of the plurality of switching devices is independently controllable via the controller.
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公开(公告)号：US11456588B2
公开(公告)日：2022-09-27
申请号：US16758145
申请日：2017-10-23
申请人： GKN Automotive Ltd.
发明人： Roman Liebsch
IPC分类号： H02H3/08 , B60R16/02 , G01R31/00 , G01R31/327 , H02H1/00
摘要： A protective circuit includes a first field-effect transistor having a first drain terminal, a first source terminal and a first gate terminal, a control device by which an electrical first voltage between the first drain terminal and the first source terminal can be determined, and a first temperature sensor by which a first temperature of the first field-effect transistor can be detected, wherein a first resistance of the first field effect transistor and an electrical first current conducted via the first field-effect transistor can be determined by the control device based on the first temperature.
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公开(公告)号：US20220299547A1
公开(公告)日：2022-09-22
申请号：US17392750
申请日：2021-08-03
申请人： Panduit Corp.
IPC分类号： G01R19/155 , G01R31/327
摘要： An absence of voltage detection system has an isolation module connected to a voltage source to be detected an I/O accessory module connected to the isolation module wherein the I/O accessory module is configured to allow remote activation of the isolation module.
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公开(公告)号：US20220294258A1
公开(公告)日：2022-09-15
申请号：US17805242
申请日：2022-06-03
IPC分类号： H02J9/06 , G01R31/327 , G01R31/40
摘要： According to certain aspects of the disclosure, an uninterruptible power supply is provided comprising an input, a backup power supply, an output configured to provide output power from the input and/or the backup power supply, a sensor, a relay, and a controller coupled to the sensor and the relay and being configured to determine, based on stored relay specifications, a manufacturer total estimated relay lifetime, receive operational information indicative of operational parameters of operation of the relay from the sensor, the operational information including a current conducted by the relay, determine, based on the operational information, an effective number of relay cycles consumed by the operation of the relay, determine a modified number of remaining relay cycles based on a difference between the manufacturer total estimated lifetime and the effective number of relay cycles consumed, and output remaining relay lifetime information indicative of the modified number of remaining relay cycles.
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公开(公告)号：US20220252667A1
公开(公告)日：2022-08-11
申请号：US17591025
申请日：2022-02-02
发明人： Rémy Orban , Vincent Geffroy
IPC分类号： G01R31/327 , H01H50/54 , H01H50/44 , H01H47/22 , G01R19/00
摘要： A method for estimating the state of an electrical switching apparatus, the switching apparatus including separable electrical contacts configured to be coupled to an electrical conductor, and an electromagnetic actuator, controlled by a control circuit and including a movable core, coupled to the separable contacts, and a coil, which is passed through by a coil current. The method includes measuring, by means of sensors associated with the coil, values of the coil current in a time interval, while the electromagnetic actuator is kept in a stable and in particular closed position, and computing, by means of an electronic control device of the switching apparatus, one or more values of a magnetic flux of the coil from the measured coil-current values, and using coil-voltage and coil-resistance values known beforehand.
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