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Class Information
Number: 361/46
Name: Electricity: electrical systems and devices > Safety and protection of systems and devices > Ground fault protection > With differential sensing in a single phase system > With more than two wires
Description: Subject matter wherein the current going to and returning from the load in a single phase system with more than two wires is compared by a sensing means and a sensed difference activates the protective circuit.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7440246 |
Circuit interrupting apparatus with remote test and reset activation |
Oct. 21, 2008 |
| 7403086 |
Ground fault circuit interrupter with reverse wiring protection |
Jul. 22, 2008 |
| 7375940 |
Transformer interface for preventing EMI-based current imbalances from falsely triggering ground fault interrupt |
May. 20, 2008 |
| 7336457 |
Ground fault circuit interrupter (GFCI) end-of-life (EOL) status indicator |
Feb. 26, 2008 |
| 7233464 |
Apparatus for and method of ground fault detection |
Jun. 19, 2007 |
| 7161780 |
Circuit interrupting device with single throw, double mode button for test-reset function |
Jan. 9, 2007 |
| 7031126 |
GFCI that cannot be reset until wired correctly on line side and power is applied |
Apr. 18, 2006 |
| 6738241 |
Fireguard circuit |
May. 18, 2004 |
| 6728087 |
Method and apparatus for remotely actuating a circuit protection device |
Apr. 27, 2004 |
| 6522510 |
Ground fault circuit interrupter with miswire protection and indicator |
Feb. 18, 2003 |
| 6437700 |
Ground fault circuit interrupter |
Aug. 20, 2002 |
| 6381113 |
Leakage current protection device adapted to a wide variety of domestic and international applications |
Apr. 30, 2002 |
| 6292337 |
Electrical system with arc protection |
Sep. 18, 2001 |
| 6121862 |
Magnetic flux concentrator shield for use in overload relay |
Sep. 19, 2000 |
| 5969921 |
Ground fault electrical switching apparatus for coordinating tripping with a downstream ground fault switch |
Oct. 19, 1999 |
| 5745322 |
Circuit protection arrangements using ground fault interrupter for overcurrent and overvoltage protection |
Apr. 28, 1998 |
| 5606480 |
Detector for monitoring the integrity of a ground connection to an electrical appliance |
Feb. 25, 1997 |
| 5541800 |
Reverse wiring indicator for GFCI receptacles |
Jul. 30, 1996 |
| 5490030 |
Electromagnetic and radio frequency interference suppression for ground fault circuit interrupters |
Feb. 6, 1996 |
| 5475557 |
Method and apparatus for protecting electrical systems |
Dec. 12, 1995 |
| 5426553 |
Apparatus for monitoring grounded states of multiple DC loads of relay system |
Jun. 20, 1995 |
| 5424893 |
Gas discharge device power supply with ground fault protection |
Jun. 13, 1995 |
| 5424895 |
Electrical wiring system with overtemperature protection |
Jun. 13, 1995 |
| 5418678 |
Manually set ground fault circuit interrupter |
May. 23, 1995 |
| 5361183 |
Ground fault protection for electrothermal de-icing applications |
Nov. 1, 1994 |
| 5206777 |
Three-phase panelboard using standard rated three-pole circuit protective devices in a grounded delta system |
Apr. 27, 1993 |
| 5179491 |
Plug-in circuit breaker |
Jan. 12, 1993 |
| 5173831 |
Neutral line circuit interrupter |
Dec. 22, 1992 |
| 5142646 |
Ground fault electrical panel |
Aug. 25, 1992 |
| 4979070 |
Automatic reset circuit for GFCI |
Dec. 18, 1990 |
| 4947278 |
Remote sensing power disconnect circuit |
Aug. 7, 1990 |
| 4942313 |
Method for detecting a current flowing over the human body between a forward and a return conductor and a circuit configuration for carrying out the method |
Jul. 17, 1990 |
| 4933801 |
Ground fault circuit interrupter |
Jun. 12, 1990 |
| 4931894 |
Ground fault current interrupter circuit with arcing protection |
Jun. 5, 1990 |
| 4912588 |
High-tension voltage generator and method of protecting same against electrical arcs |
Mar. 27, 1990 |
| 4736265 |
Safety device for a differential protection apparatus |
Apr. 5, 1988 |
| 4734843 |
Electrical power control systems |
Mar. 29, 1988 |
| 4725913 |
Residual current detector |
Feb. 16, 1988 |
| 4667262 |
Device for detecting a ground fault in the rotor winding of an electric machine |
May. 19, 1987 |
| 4663690 |
Residual differential device equipped with a surveillance system for the electronic power supply |
May. 5, 1987 |
| 4618907 |
Desensitized ground fault interrupter |
Oct. 21, 1986 |
| 4598331 |
Ground fault current interrupter circuit with open neutral and ground lead protection |
Jul. 1, 1986 |
| 4574324 |
Ground fault circuit interrupter |
Mar. 4, 1986 |
| 4568997 |
Resettable circuit breaker for use in ground fault circuit interrupters and the like |
Feb. 4, 1986 |
| 4492878 |
Electrical line reversal and protection system |
Jan. 8, 1985 |
| 4442470 |
Ground fault receptacle with arrangement for protecting internal electronics |
Apr. 10, 1984 |
| 4370692 |
Ground fault protective system requiring reduced current-interrupting capability |
Jan. 25, 1983 |
| 4358809 |
Personal protection circuit |
Nov. 9, 1982 |
| 4312022 |
Shock hazard protective apparatus for high voltage system |
Jan. 19, 1982 |
| 4233640 |
Ground fault apparatus and protection system |
Nov. 11, 1980 |
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