Power Contact Fault Clearing Device

    公开(公告)号:US20210005401A1

    公开(公告)日:2021-01-07

    申请号:US16934167

    申请日:2020-07-21

    摘要: A power contact fault clearing device includes a first pair of terminals adapted to be connected across a first set of switchable contacts, and a second pair of terminals adapted to be connected across a second set of switchable contacts. The second set of switchable contacts coupled to an arc suppressor. A current sensor is adapted to be connected between a power load and the second set of switchable contacts. The current sensor is configured to measure a power load current associated with the power load. A controller circuit is operatively coupled to the current sensor and the first and second pairs of terminals. The controller circuit is configured to detect a fault condition based at least on the power load current, and sequence deactivation of the first set of switchable contacts and the second set of switchable contacts based on the detected fault condition.

    High power, multi-phase, AC power contact arc suppressor

    公开(公告)号:US10818444B2

    公开(公告)日:2020-10-27

    申请号:US16776339

    申请日:2020-01-29

    摘要: An arc suppressing circuit configured to suppress arcing across a power contactor coupled to an alternating current (AC) power source having a predetermined number of phases, each contact of the power contactor corresponding to one of the predetermined number of phases includes a number of dual unidirectional arc suppressors equal to the predetermined number of phases of the AC power source. Each dual unidirectional arc suppressor includes a first phase-specific arc suppressor configured to suppress arcing across the associated contacts in a positive domain, a a second phase-specific arc suppressor configured to suppress arcing across the associated contacts in a negative domain, and a coil lock controller, configured to be coupled between a contact coil driver of the power contactor, configured to detect an output condition from the contact coil driver and inhibit operation of the first and second phase-specific arc suppressors over a predetermined time.

    Two terminal arc suppressor
    25.
    发明授权

    公开(公告)号:US10748719B2

    公开(公告)日:2020-08-18

    申请号:US16167043

    申请日:2018-10-22

    发明人: Reinhold Henke

    摘要: A two terminal arc suppressor for protecting switch, relay or contactor contacts and the like comprises a two terminal module adapted to be attached in parallel with the contacts to be protected and including a circuit for deriving an operating voltage upon the transitioning of the switch, relay or contactor contacts from a closed to an open disposition, the power being rectified and the resulting DC signal used to trigger a power triac switch via an optoisolator circuit whereby arc suppression pulses are generated for short predetermined intervals only at a transition of the mechanical switch, relay or contactor contacts from an closed to an open transition and, again, at an open to a close transition during contact bounce conditions.

    Two terminal arc suppressor
    26.
    发明授权

    公开(公告)号:US09508501B2

    公开(公告)日:2016-11-29

    申请号:US14803501

    申请日:2015-07-20

    发明人: Reinhold Henke

    IPC分类号: H02H9/00 H01H9/30 H01H9/54

    摘要: A two terminal arc suppressor for protecting switch, relay or contactor contacts and the like comprises a two terminal module adapted to be attached in parallel with the contacts to be protected and including a circuit for deriving an operating voltage upon the transitioning of the switch, relay or contactor contacts from a closed to an open disposition, the power being rectified and the resulting DC signal used to trigger a power triac switch via an optoisolator circuit whereby arc suppression pulses are generated for short predetermined intervals only at a transition of the mechanical switch, relay or contactor contacts from an closed to an open transition and, again, at an open to a close transition during contact bounce conditions.

    ARC SUPPRESSOR, SYSTEM, AND METHOD
    27.
    发明申请
    ARC SUPPRESSOR, SYSTEM, AND METHOD 有权
    弧抑制器,系统和方法

    公开(公告)号:US20140091059A1

    公开(公告)日:2014-04-03

    申请号:US14039889

    申请日:2013-09-27

    发明人: Reinhold Henke

    IPC分类号: H01H33/12

    摘要: Device, circuit, system, and method for arc suppression. A contact separation detector is configured to output an indication of a separation state of a pair of electrical contacts. A contact bypass circuit, coupled to the contact separation detector, is configured to provide an electrical bypass between the pair of contacts based on the indication.

    摘要翻译: 用于电弧抑制的装置,电路,系统和方法。 接触分离检测器被配置为输出一对电触点的分离状态的指示。 耦合到接触分离检测器的接触旁路电路被配置为基于指示在该对触点之间提供电旁路。

    Arc flash suppressor, system, and method

    公开(公告)号:US12074422B2

    公开(公告)日:2024-08-27

    申请号:US17874568

    申请日:2022-07-27

    IPC分类号: H02H1/00 H02H7/26 H02H9/02

    CPC分类号: H02H1/0015 H02H7/26 H02H9/02

    摘要: An arc flash suppressor, system, and method are disclosed. The arc flash suppressor includes a main processor, a current sensor processor, a voltage sensor processor, a plasma ignition detector, and an arc flash extinguishing circuit. The current sensor processor is configured to detect a slew rate of an input current from a power source. The voltage sensor processor is configured to detect a slew rate of an input voltage from the power source. The main processor is configured to cause the arc flash extinguishing circuit to create a short circuit condition over the power source to extinguish an arc flash upon detection of a critical current slew rate, a critical voltage slew rate, and plasma ignition.

    High power, multi-phase, AC power contact arc suppressor

    公开(公告)号:US20220384118A1

    公开(公告)日:2022-12-01

    申请号:US17838463

    申请日:2022-06-13

    摘要: An arc suppressing circuit configured to suppress arcing across a power contactor coupled to an alternating current (AC) power source having a predetermined number of phases, each contact of the power contactor corresponding to one of the predetermined number of phases includes a number of dual unidirectional arc suppressors equal to the predetermined number of phases of the AC power source. Each dual unidirectional arc suppressor includes a first phase-specific arc suppressor configured to suppress arcing across the associated contacts in a positive domain, a a second phase-specific arc suppressor configured to suppress arcing across the associated contacts in a negative domain, and a coil lock controller, configured to be coupled between a contact coil driver of the power contactor, configured to detect an output condition from the contact coil driver and inhibit operation of the first and second phase-specific arc suppressors over a predetermined time.