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公开(公告)号：US11621557B2
公开(公告)日：2023-04-04
申请号：US15487690
申请日：2017-04-14
申请人： TechHold, LLC
发明人： Greg Fuchs , George Anderson , William M. Volna , Gale K. Nordling , Wallace Jensen , David Blake Jackson , Frederick R. Faxvog , James Nicholas Ruehl
摘要： Electrical protection devices, such as for use with power systems for overvoltage protection, are disclosed. One electrical protection device includes a first electrical connection, a second electrical connection, a first electrical discharge device, and a second electrical discharge device. The first electrical discharge device includes a first conductive bus connected to the first electrical connection and a second conductive bus connected to the second electrical connection. The first electrical discharge device has a first breakdown voltage. The second electrical discharge device includes a third conductive bus connected to the first electrical connection and a fourth conductive bus connected to the second electrical connection. The second electrical discharge device has a second breakdown voltage.
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公开(公告)号：US11038347B2
公开(公告)日：2021-06-15
申请号：US15885473
申请日：2018-01-31
申请人： TechHold, LLC
发明人： Greg Fuchs , George Anderson , William M. Volna , Gale K. Nordling , Wallace Jensen , David Blake Jackson , Frederick R. Faxvog , James Nicholas Ruehl
摘要： Electrical protection devices, such as for use with power systems for overvoltage protection, are disclosed. One electrical protection device includes a first electrical connection, a second electrical connection, a first electrical discharge device, and a second electrical discharge device. The first electrical discharge device includes a first conductive bus connected to the first electrical connection and a second conductive bus connected to the second electrical connection. The first electrical discharge device has a first breakdown voltage. The second electrical discharge device includes a third conductive bus connected to the first electrical connection and a fourth conductive bus connected to the second electrical connection. The second electrical discharge device has a second breakdown voltage.
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公开(公告)号：US11451044B2
公开(公告)日：2022-09-20
申请号：US17102039
申请日：2020-11-23
申请人： TechHold, LLC
IPC分类号： H02H3/05 , G01R31/333 , H02H3/20 , H02H1/00
摘要： Systems and method for automated self-testing of a protective device for a transformer are disclosed. One system includes a protection circuit electrically connected to a transformer neutral, the transformer electrically connected to a power grid, the protection circuit may include a DC blocking component, a switch assembly, and a spark gap assembly each positioned in parallel between the transformer neutral and ground, a switch assembly. The system may further include various testing circuits configured within the protection circuit and switches which when actuated inject a signal to test various components in the protective device.
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4.发明申请公开(公告)号：US20210075213A1
公开(公告)日：2021-03-11
申请号：US17100412
申请日：2020-11-20
申请人： TechHold, LLC
摘要： A protection circuit is disclosed. The protection circuit includes a direct current (DC) blocking component electrically connected between a neutral of the transformer and a ground, and an overvoltage protection device electrically connected in parallel with the DC blocking component. The overvoltage protection device is constructed to repeatably and reliably provide overvoltage protection in response to a voltage at the transformer neutral above a threshold. The DC blocking component has an impedance below a predetermined value, thereby effectively grounding the neutral of the transformer. The DC blocking component is persistently maintained in connection to the transformer neutral.
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5.发明授权公开(公告)号：US11984720B2
公开(公告)日：2024-05-14
申请号：US17100412
申请日：2020-11-20
申请人： TechHold, LLC
摘要： A protection circuit is disclosed. The protection circuit includes a direct current (DC) blocking component electrically connected between a neutral of the transformer and a ground, and an overvoltage protection device electrically connected in parallel with the DC blocking component. The overvoltage protection device is constructed to repeatably and reliably provide overvoltage protection in response to a voltage at the transformer neutral above a threshold. The DC blocking component has an impedance below a predetermined value, thereby effectively grounding the neutral of the transformer. The DC blocking component is persistently maintained in connection to the transformer neutral.
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公开(公告)号：US11451047B2
公开(公告)日：2022-09-20
申请号：US15942020
申请日：2018-03-30
申请人： TechHold, LLC
发明人： David Anderson , Greg Fuchs , Frederick R. Faxvog
摘要： A circuit includes a detector and controller circuit configured to detect a high field RF (radio frequency) electromagnetic fields indicating a potential of an electromagnetic pulse event capable of damaging electrical equipment connected to a power grid. The circuit also includes controller receiving an input from the detector circuit, the controller being included within a shielded enclosure and configured to initiate an event in response to detection of the high field electromagnetic pulse field to remove the electrical equipment from the power grid.
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公开(公告)号：US20210159689A1
公开(公告)日：2021-05-27
申请号：US17102039
申请日：2020-11-23
申请人： TechHold, LLC
IPC分类号： H02H3/05 , H02H1/00 , H02H3/20 , G01R31/333
摘要： Systems and method for automated self-testing of a protective device for a transformer are disclosed. One system includes a protection circuit electrically connected to a transformer neutral, the transformer electrically connected to a power grid, the protection circuit may include a DC blocking component, a switch assembly, and a spark gap assembly each positioned in parallel between the transformer neutral and ground, a switch assembly. The system may further include various testing circuits configured within the protection circuit and switches which when actuated inject a signal to test various components in the protective device.
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公开(公告)号：US11923129B2
公开(公告)日：2024-03-05
申请号：US17667197
申请日：2022-02-08
申请人： TechHold LLC
发明人： David Anderson , Greg Fuchs
CPC分类号： H01F27/402 , H02H7/042
摘要： Methods and systems for controlling a circuit designed to protect electrical equipment, in particular sensitive power grid equipment such as transformers, are disclosed. In particular, methods of local and remote control of operation of protection circuits are provided that allow for remote access to change an operational mode of such protection circuits, while ensuring that power grid equipment is protected locally regardless of any configuration instructions received from a remote or centralized facility. Override levels may be set to ensure power grid transformer protection, regardless of operational mode or remote instruction.
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公开(公告)号：US20220254565A1
公开(公告)日：2022-08-11
申请号：US17667197
申请日：2022-02-08
申请人： TechHold LLC
发明人： DAVID ANDERSON , GREG FUCHS
摘要： Methods and systems for controlling a circuit designed to protect electrical equipment, in particular sensitive power grid equipment such as transformers, are disclosed. In particular, methods of local and remote control of operation of protection circuits are provided that allow for remote access to change an operational mode of such protection circuits, while ensuring that power grid equipment is protected locally regardless of any configuration instructions received from a remote or centralized facility. Override levels may be set to ensure power grid transformer protection, regardless of operational mode or remote instruction.
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公开(公告)号：US10931096B2
公开(公告)日：2021-02-23
申请号：US15923829
申请日：2018-03-16
申请人： TechHold LLC
摘要： A control device for an electrical protection circuit for use in an alternating current system including a transformer is disclosed. An example system includes a first measurement probe, a second measurement probe configured to measure an electrical property within the electrical protection circuit, and a control module, including a processing device. The control module is configured to monitor a measurement from the first measurement probe and transmit a protection activation control signal to the switch assembly based on the measurement from the first measurement probe exceeding a first predetermined threshold. The control module is also configured to monitor a measurement from the second measurement probe and transmit a protection deactivation control signal to the switch assembly based on the measurement from the second measurement probe satisfying a second predetermined threshold.
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