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    CONTINUOUS UNINTERRUPTABLE AC GROUNDING SYSTEM FOR POWER SYSTEM PROTECTION
    1.
    发明公开
    CONTINUOUS UNINTERRUPTABLE AC GROUNDING SYSTEM FOR POWER SYSTEM PROTECTION 有权
    连续不间断交流电源接地系统的电力系统的保护

    公开(公告)号：EP2596565A2

    公开(公告)日：2013-05-29

    申请号：EP11748511.0

    申请日：2011-07-19

    申请人： Emprimus, LLC

    发明人： FAXVOG, Frederick, R. ,  JENSEN, Wallace ,  NORDLING, Gale ,  FUCHS, Greg ,  JACKSON, David, Blake ,  VOLKMANN, Terry, Lee ,  RUEHL, James, Nicholas ,  GROH, Brian

    IPC分类号： H02H9/00 ,  H02H3/00 ,  H02H3/52 ,  H02H7/04

    CPC分类号： H02H3/52 ,  H02H1/04 ,  H02H5/005 ,  H02H7/04 ,  Y10T307/625 ,  Y10T307/707 ,  Y10T307/735 ,  Y10T307/832

    摘要： A continuous grounding system for use in an alternating current system including a transformer is disclosed. The system includes a switch assembly connected between a transformer neutral of a transformer and a ground, the switch assembly having an open position and a closed position, the open position disrupting the path through the switch assembly between the electrical connection and the transformer neutral, and the closed position establishing a path connecting the electrical connection to the transformer neutral through the switch assembly, wherein in normal operation of the alternating current electrical device the switch assembly remains in a closed position. The system also includes a DC blocking component positioned in parallel with the switch assembly and connected between the transformer neutral and the ground. The system further includes a control circuit configured to control the switch assembly, the control circuit including a sensor configured to actuate the switch assembly to an open position upon detection of a predetermined harmonic signal threshold at one of the transformer phases or a predetermined threshold of DC current between the transformer neutral and ground.