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Class Information
Number: 361/63
Name: Electricity: electrical systems and devices > Safety and protection of systems and devices > Feeder protection in distribution networks > With current responsive fault sensor
Description: Subject matter wherein the protective means senses a current fault in the feeder and activates the disconnect means.

Sub-classes under this class:

Class Number Class Name Patents
361/64 With communication between feeder disconnect points 183

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8680843 Magnetic field current sensors Mar. 25, 2014
8675324 Short-circuit isolator Mar. 18, 2014
8630078 Active AC inrush current control Jan. 14, 2014
8614870 Active transient current control in electronic circuit breakers Dec. 24, 2013
8553379 Transformer differential protection Oct. 8, 2013
8521454 Zone selective interlocking test method and apparatus, and circuit interrupter apparatus and power distribution system including the same Aug. 27, 2013
8385035 Protection system having reduced energy let-through mode and zone selectivity Feb. 26, 2013
8280653 Zone selective interlocking test method and apparatus, and circuit interrupter apparatus and power distribution system including the same Oct. 2, 2012
8271214 Method for increasing the sensitivity of a differential protection system Sep. 18, 2012
8254072 Electrical load center Aug. 28, 2012
8248739 Electrical switching apparatus and protection apparatus determining thermal age of another apparatus or a number of insulators Aug. 21, 2012
8228648 Compressor protection and grid fault detection device Jul. 24, 2012
8218278 Current differential relay device, signal processing method thereof and power transmission line protection system Jul. 10, 2012
8213144 Circuit protection system Jul. 3, 2012
8203814 Electrical switching apparatus including a plurality of Rogowski coils and method of calibrating the same Jun. 19, 2012
8159792 Motor control device Apr. 17, 2012
8144442 Power protection in a multi-level power hierarchy Mar. 27, 2012
8120504 Circuit for indicating operating status of computer hardware devices Feb. 21, 2012
8054593 Apparatus and method for measuring load current using a ground fault sensing transformer Nov. 8, 2011
8054598 Negotiating capacity allocation among distributed current protection devices Nov. 8, 2011
8050878 Method and system for estimation of source impedence on electrical distribution lines Nov. 1, 2011
8045302 Compressor protection and grid fault detection device Oct. 25, 2011
7990093 Electric motor control apparatus Aug. 2, 2011
7974058 Group protection module for a switchgear arrangement and switchgear arrangement having such a group protection module Jul. 5, 2011
7936545 Power supply control system May. 3, 2011
7764478 Power supply control system Jul. 27, 2010
7751993 Technique for high-impedance ground fault detection at the common DC bus of multi-axis drives Jul. 6, 2010
7747354 Circuit protection system Jun. 29, 2010
7732940 Apparatus and method for reducing neutral line current using load switching method Jun. 8, 2010
7660088 System, apparatus and method for compensating the sensitivity of a sequence element in a line current differential relay in a power system Feb. 9, 2010
7652862 Hardware based over-current protection circuitry for power distribution systems Jan. 26, 2010
7626791 Electrical fault detection Dec. 1, 2009
7612972 Electrical contractor current sensing system and method Nov. 3, 2009
7599161 Relay device and corresponding method Oct. 6, 2009
7579963 Electronic protection devices for circuit-breakers and corresponding programming method Aug. 25, 2009
7562945 System and method for dealing with ground fault conditions that can arise in an electrical propulsion system Jul. 21, 2009
7542256 Relay device and corresponding method Jun. 2, 2009
7344202 System and method for dealing with ground fault conditions that can arise in an electrical propulsion system Mar. 18, 2008
7342759 Power supply unit having a mains suppression filter for an electrically operated domestic appliance Mar. 11, 2008
7324006 Remote display ammeter for power plug or power strip Jan. 29, 2008
7310049 Status indicator Dec. 18, 2007
7304826 Fault management of high temperture superconductor cable Dec. 4, 2007
7253629 Circuit protection device with grounded neutral half cycle self test Aug. 7, 2007
7208883 Current detection circuit, and power supply apparatus, power supply system and electronic apparatus using the current detection circuit Apr. 24, 2007
7196884 Apparatus and method for detecting the loss of a current transformer connection coupling a current differential relay to an element of a power system Mar. 27, 2007
7183735 Drive unit for controlling drives in machine tools or production machines Feb. 27, 2007
7180717 Electrical network protection system Feb. 20, 2007
7151656 Arc fault circuit interrupter system Dec. 19, 2006
7132951 Apparatus and method for protecting an uninterruptible power supply and critical loads connected thereto Nov. 7, 2006
7116239 Current sense components failure detection in a multi-phase power system Oct. 3, 2006

1 2 3 4

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