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Class Information
Number: 361/94
Name: Electricity: electrical systems and devices > Safety and protection of systems and devices > With specific current responsive fault sensor > With time delay protective means
Description: Subject matter wherein the protective means is activated at a predetermined time after the fault is sensed.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7616422 |
Over current protection circuit for power supplies |
Nov. 10, 2009 |
| 7595969 |
Undervoltage warning method, undervoltage warning circuit and switching power supply |
Sep. 29, 2009 |
| 7583060 |
Protective circuit for a secondary battery pack and method of operating the same |
Sep. 1, 2009 |
| 7573393 |
Integrated fault output/fault response delay circuit |
Aug. 11, 2009 |
| 7499252 |
Driver circuit |
Mar. 3, 2009 |
| 7468877 |
Overcurrent detection circuit and power supply apparatus provided therewith |
Dec. 23, 2008 |
| 7440246 |
Circuit interrupting apparatus with remote test and reset activation |
Oct. 21, 2008 |
| 7417840 |
Self-supplied electronic protection device for automatic circuit-breakers |
Aug. 26, 2008 |
| 7408750 |
Methods of detecting arc faults characterized by consecutive periods of arcing |
Aug. 5, 2008 |
| 7379284 |
Switching control circuit and self-excited DC-DC converter |
May. 27, 2008 |
| 7376359 |
Digital regulated light receive module and regulation method |
May. 20, 2008 |
| 7330343 |
Current-limiting protection circuit for a power supply |
Feb. 12, 2008 |
| 7280338 |
Power supply circuit, back-pack power supply module and circuit interrupter including the same |
Oct. 9, 2007 |
| 7262574 |
Robot overcurrent prevention system |
Aug. 28, 2007 |
| 7245465 |
Voltage regulator |
Jul. 17, 2007 |
| 7233470 |
Distance relay apparatus |
Jun. 19, 2007 |
| 7126802 |
Drive circuit for switching device |
Oct. 24, 2006 |
| 7064946 |
Electronic fuse |
Jun. 20, 2006 |
| 7046155 |
Fault detection system |
May. 16, 2006 |
| 6999293 |
Safety device for a delta-connected three-phase electric appliance |
Feb. 14, 2006 |
| 6952356 |
Adaptive over-current detection |
Oct. 4, 2005 |
| 6950292 |
Combination current sensor and relay |
Sep. 27, 2005 |
| 6944004 |
Arrangements to detect and respond to disturbances in electrical power systems |
Sep. 13, 2005 |
| 6909586 |
Circuit breaker voltage sensing module |
Jun. 21, 2005 |
| 6870723 |
Configuration comprising two contactors connected in series |
Mar. 22, 2005 |
| 6847532 |
System and method to eliminate the dead time influence in a pwm-driven system |
Jan. 25, 2005 |
| 6759964 |
Fault detection system |
Jul. 6, 2004 |
| 6744612 |
Inrush current protection circuit |
Jun. 1, 2004 |
| 6724600 |
Combination current sensor and relay |
Apr. 20, 2004 |
| 6717783 |
Short circuit power limiter |
Apr. 6, 2004 |
| 6687106 |
Power module |
Feb. 3, 2004 |
| 6683765 |
Switching power unit |
Jan. 27, 2004 |
| 6654216 |
Distributed monitoring and protection system for a distributed power network |
Nov. 25, 2003 |
| 6646450 |
Method and apparatus for near losslessly measuring inductor current |
Nov. 11, 2003 |
| 6646849 |
Digital power inverter and method of controlling the same |
Nov. 11, 2003 |
| 6639777 |
Electronic timer switch |
Oct. 28, 2003 |
| 6603649 |
Electronic tripping device for a circuit breaker |
Aug. 5, 2003 |
| 6590757 |
Method and apparatus for detecting and suppressing a parallel arc fault |
Jul. 8, 2003 |
| 6542345 |
Circuit breaker |
Apr. 1, 2003 |
| 6534991 |
Connection tester for an electronic trip unit |
Mar. 18, 2003 |
| 6532405 |
Method for detecting a locked axle on a locomotive AC traction motor |
Mar. 11, 2003 |
| 6522509 |
Arc fault detection in ac electric power systems |
Feb. 18, 2003 |
| 6512380 |
Contactor and trip circuit therefor |
Jan. 28, 2003 |
| 6507654 |
Line interface battery feed arrangements with PTC resistors |
Jan. 14, 2003 |
| 6456475 |
Off-line converter with digital control |
Sep. 24, 2002 |
| 6400544 |
Current limiting using capacitor charge measurement |
Jun. 4, 2002 |
| 6392422 |
Monitoring insulation and fault current in an A/C current network to provide load shutoff whenever differential current exceeds a certain response value |
May. 21, 2002 |
| 6388854 |
Load balancing and distributing switch-on control for a circuit breaker, an appliance, a device, or an apparatus |
May. 14, 2002 |
| 6381113 |
Leakage current protection device adapted to a wide variety of domestic and international applications |
Apr. 30, 2002 |
| 6380722 |
Method to increase the efficiency of a power switching device |
Apr. 30, 2002 |
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