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Class Information
Number: 324/510
Name: Electricity: measuring and testing > Fault detecting in electric circuits and of electric components > Of ground fault indication > Of electrically operated apparatus (power tool, appliance, machine, etc.)
Description: Subject matter for detecting an undesirable current leakage between an ungrounded and grounded part of equipment normally caused by defective insulation.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7528611 |
Methods and system for detecting winding faults in a generator with parallel windings |
May. 5, 2009 |
| 7528608 |
Sensor device for a household appliance |
May. 5, 2009 |
| 7456635 |
Circuit arrangement comprising a multi-wire line for supplying current and emitting signals |
Nov. 25, 2008 |
| 7411404 |
Apparatus, system, and method for detecting an electrical short condition in a dynamoelectric machine |
Aug. 12, 2008 |
| 7337081 |
Metering device with control functionality and method thereof |
Feb. 26, 2008 |
| 7323878 |
Ground testing method and apparatus |
Jan. 29, 2008 |
| 7253629 |
Circuit protection device with grounded neutral half cycle self test |
Aug. 7, 2007 |
| 7253634 |
Generator protection methods and systems self-tuning to a plurality of characteristics of a machine |
Aug. 7, 2007 |
| 7154277 |
Method and apparatus for detecting faults in AC to AC, or DC to AC power conversion equipments when the equipment is in a high impedance mode |
Dec. 26, 2006 |
| 7154278 |
Arrangement for detecting a leakage current or defect current |
Dec. 26, 2006 |
| 7118380 |
Connector arrangement in wrist strap monitors |
Oct. 10, 2006 |
| 7110895 |
Leakage current or resistance measurement method, and monitoring apparatus and monitoring system of the same |
Sep. 19, 2006 |
| 7102355 |
Method, apparatus and computer-readable code for magnifying an incipient ground fault and enable quick detection of such fault |
Sep. 5, 2006 |
| 7102356 |
Electrical leakage detection circuit |
Sep. 5, 2006 |
| 7068037 |
Method of diagnosing inverter trouble |
Jun. 27, 2006 |
| 7005995 |
System and method for remotely detecting and locating damaged conductors in a power system |
Feb. 28, 2006 |
| 6963216 |
Method and apparatus for detecting shorted rectifying control elements of an engine driven power source for welding-type system |
Nov. 8, 2005 |
| 6940413 |
Method and apparatus for monitoring operation of electrical household appliances |
Sep. 6, 2005 |
| 6922643 |
Leakage current or resistance measurement method, and monitoring apparatus and monitoring system of the same |
Jul. 26, 2005 |
| 6914440 |
Welding system and method utilizing a ground integrity monitor |
Jul. 5, 2005 |
| 6906525 |
Ground detection apparatus for electric vehicle |
Jun. 14, 2005 |
| 6876222 |
Automated stator insulation flaw inspection tool and method of operation |
Apr. 5, 2005 |
| 6856137 |
Ground fault detection system and method |
Feb. 15, 2005 |
| 6844736 |
Systems and methods for locating a ground fault without de-energizing the circuit |
Jan. 18, 2005 |
| 6829556 |
Method and system for detecting incipient failures in a traction system |
Dec. 7, 2004 |
| 6798210 |
Speed sensitive field ground detection mode for a generator field winding |
Sep. 28, 2004 |
| 6777954 |
Faulty wiring detection device for air conditioner |
Aug. 17, 2004 |
| 6633169 |
Monitoring leakage currents from high-voltage devices |
Oct. 14, 2003 |
| 6593767 |
Leak detection method for electrical equipment |
Jul. 15, 2003 |
| 6504382 |
Electrical system with a stress shield system for partial discharge on-line monitoring of the state of high-voltage insulation |
Jan. 7, 2003 |
| 6496015 |
Method of performing a dielectric voltage-withstand test on a wire harness |
Dec. 17, 2002 |
| 6496012 |
Apparatus and method for detecting a short circuit in a lighting system |
Dec. 17, 2002 |
| 6489782 |
Electrical system with a stand-off insulator-sensor for on-line partial discharge monitoring of the state of high-voltage insulation |
Dec. 3, 2002 |
| 6456085 |
Diagnostic device for detecting short circuits or line interruptions in an inductive sensor |
Sep. 24, 2002 |
| 6445188 |
Intelligent, self-monitoring AC power plug |
Sep. 3, 2002 |
| 6433557 |
Electrical system with capacitance tap and sensor for on-line monitoring the state of high-voltage insulation and remote monitoring device |
Aug. 13, 2002 |
| 6377054 |
Test device for electrical voltages with integrated illumination unit |
Apr. 23, 2002 |
| 6313639 |
Method and configuration for identifying short circuits in low-voltage networks |
Nov. 6, 2001 |
| 6313642 |
Apparatus and method for testing an arcing fault detection system |
Nov. 6, 2001 |
| 6297642 |
Partial discharge detection method |
Oct. 2, 2001 |
| 6208149 |
Method and apparatus for monitoring electric insulation conditions in energized electric systems |
Mar. 27, 2001 |
| 6140929 |
Self-testing grounding device |
Oct. 31, 2000 |
| 6081122 |
Electrical ground fault detection apparatus |
Jun. 27, 2000 |
| 6054849 |
Electrical testing device |
Apr. 25, 2000 |
| 6052053 |
Continuous monitoring system |
Apr. 18, 2000 |
| 6011398 |
Current-leakage tester |
Jan. 4, 2000 |
| 6005393 |
Method of determining an earth-fault current |
Dec. 21, 1999 |
| 5977662 |
Electronic switching device and circuits with a plurality of such switching devices |
Nov. 2, 1999 |
| 5969626 |
ESD ground monitor for electrostatic safe work tables |
Oct. 19, 1999 |
| 5909181 |
Method and apparatus for indicating electrical connection |
Jun. 1, 1999 |
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