Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Reexamination Certificate
2006-10-26
2009-02-17
Jackson, Stephen W (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Ground fault protection
C324S508000, C324S509000, C324S511000, C324S537000
Reexamination Certificate
active
07492559
ABSTRACT:
An apparatus for testing the life of a leakage current protection device having a leakage current detection circuit and a trip mechanism having a switch device. In one embodiment, the apparatus a ground fault simulation unit, a fault detector of the leakage current detection circuit and the trip mechanism, and a life testing detection control unit having an MCU for controlling operation of the fault detector. In operation, a first signal (pulse signal) is sent to the gate of the switching device to generate a first voltage at the cathode of the switching device, a second signal is sent to the ground fault simulation unit to generate a simulated ground fault for the leakage current detection circuit to generate a second voltage at the gate of the switching device, and the first and second voltages are measured to determine whether a fault exists in the leakage current detection circuit and the trip mechanism.
REFERENCES:
patent: 3953766 (1976-04-01), Howell et al.
patent: 4931894 (1990-06-01), Legatti
patent: 4979070 (1990-12-01), Bodkin
patent: 5053931 (1991-10-01), Rushing
patent: 5223810 (1993-06-01), Van Haaren
patent: 5229730 (1993-07-01), Legatti et al.
patent: 5334939 (1994-08-01), Yarbrough
patent: 5363269 (1994-11-01), McDonald
patent: 5418678 (1995-05-01), McDonald
patent: 5448443 (1995-09-01), Muelleman
patent: 5477412 (1995-12-01), Neiger et al.
patent: 5541800 (1996-07-01), Misencik
patent: 5642248 (1997-06-01), Campolo et al.
patent: 5654857 (1997-08-01), Gershen
patent: 5661623 (1997-08-01), McDonald et al.
patent: 5673360 (1997-09-01), Scripps
patent: 5684272 (1997-11-01), Gernhardt et al.
patent: 5706155 (1998-01-01), Neiger et al.
patent: 5729417 (1998-03-01), Neiger et al.
patent: 5757598 (1998-05-01), Aromin
patent: 5786971 (1998-07-01), Chan et al.
patent: 5825599 (1998-10-01), Rosenbaum
patent: 5841615 (1998-11-01), Gershen
patent: 5899761 (1999-05-01), Crane et al.
patent: 5906517 (1999-05-01), Crane et al.
patent: 5963406 (1999-10-01), Neiger et al.
patent: 5963408 (1999-10-01), Neiger et al.
patent: 6021034 (2000-02-01), Chan et al.
patent: 6040967 (2000-03-01), DiSalvo
patent: 6052265 (2000-04-01), Zaretsky et al.
patent: 6052266 (2000-04-01), Aromin
patent: 6128169 (2000-10-01), Neiger et al.
patent: 6226161 (2001-05-01), Neiger et al.
patent: 6246558 (2001-06-01), DiSalvo et al.
patent: 6252407 (2001-06-01), Gershen
patent: 6259340 (2001-07-01), Fuhr et al.
patent: 6262871 (2001-07-01), Nemir et al.
patent: 6282070 (2001-08-01), Ziegler et al.
patent: 6292337 (2001-09-01), Legatti et al.
patent: 6339525 (2002-01-01), Neiger et al.
patent: 6381112 (2002-04-01), DiSalvo
patent: 6381113 (2002-04-01), Legatti
patent: 6407469 (2002-06-01), Cline et al.
patent: 6407893 (2002-06-01), Neiger et al.
patent: 6433555 (2002-08-01), Leopold et al.
patent: 6437700 (2002-08-01), Herzfeld et al.
patent: 6437953 (2002-08-01), DiSalvo et al.
patent: 6437955 (2002-08-01), Duffy et al.
patent: 6442007 (2002-08-01), Li
patent: 6465735 (2002-10-01), May
patent: 6515564 (2003-02-01), Leopold et al.
patent: 6532139 (2003-03-01), Kim et al.
patent: 6538862 (2003-03-01), Mason, Jr. et al.
patent: 6540533 (2003-04-01), Schreiber
patent: 6577478 (2003-06-01), Kim et al.
patent: 6611406 (2003-08-01), Neiger et al.
patent: 6643108 (2003-11-01), Cline et al.
patent: 6646838 (2003-11-01), Ziegler et al.
patent: 6657834 (2003-12-01), DiSalvo
patent: 6671145 (2003-12-01), Germain et al.
patent: 6674289 (2004-01-01), Macbeth
patent: 6697238 (2004-02-01), Bonilla et al.
patent: 6724589 (2004-04-01), Funderburk
patent: 6734680 (2004-05-01), Conard
patent: 6734769 (2004-05-01), Germain et al.
patent: 6747367 (2004-06-01), Cline et al.
patent: 6771152 (2004-08-01), Germain et al.
patent: 6788504 (2004-09-01), Vanderkolk
patent: 6813126 (2004-11-01), DiSalvo et al.
patent: 6828886 (2004-12-01), Germain et al.
patent: 6850394 (2005-02-01), Kim
patent: 6859044 (2005-02-01), Hughes
patent: 6864766 (2005-03-01), DiSalvo et al.
patent: 6867954 (2005-03-01), Wu et al.
patent: 6873231 (2005-03-01), Germain et al.
patent: 6897381 (2005-05-01), He et al.
patent: 6915992 (2005-07-01), Gretz
patent: 6944001 (2005-09-01), Ziegler et al.
patent: 6946935 (2005-09-01), Wu et al.
patent: 6949994 (2005-09-01), Germain et al.
patent: 6949995 (2005-09-01), Leopold et al.
patent: 6954125 (2005-10-01), Wu et al.
patent: 6958463 (2005-10-01), Kochman et al.
patent: 6963260 (2005-11-01), Germain et al.
patent: 6972572 (2005-12-01), Mernyk et al.
patent: 6975492 (2005-12-01), DiSalvo
patent: 6982856 (2006-01-01), Bernstein
patent: 6991495 (2006-01-01), Aromin
patent: 2004/0037018 (2004-02-01), Kim
patent: 2004/0070899 (2004-04-01), Gershen et al.
patent: 2006/0198066 (2006-09-01), Chen et al.
Chen Hongliang
Chen Wusheng
Song Huaiyin
Wang Fu
Zhang Feng
General Protech Group, Inc.
Jackson Stephen W
Morris Manning & Martin LLP
Tingkang Xia Tim
Willoughby Terrence R
LandOfFree
Intelligent life testing methods and apparatus for leakage... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Intelligent life testing methods and apparatus for leakage..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intelligent life testing methods and apparatus for leakage... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4124464