ClassID:

216843

H02H7/268 - CPC Classification

Classification description:

Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions; Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for dc systems

Recent Application in this class:
#1
20260142113
2026-05-21

Bi-Directional Solid-State DC Circuit Breaker with Breaking Speed Control

#2
20260140201
2026-05-21

CONSTANT CURRENT DEVICE AND FAILURE DETECTION METHOD

#3
20260110736
2026-04-23

Protective device, protective assembly, electrical panel and associated test method

#4
20260110723
2026-04-23

A PROTECTION METHOD FOR AN ELECTRICAL DISTRIBUTION SYSTEM

#5
20260074512
2026-03-12

Current-Limiting Solid State Circuit Breaker Arrangement

#6
20260074134
2026-03-12

DEVICE AND METHOD FOR SAFETY SWITCH OFF OF AN ELECTRICAL CONSUMER IN A VEHICLE

#7
20260012004
2026-01-08

JOINT FAULT DETECTION AND COMMUNICATION FOR DC POWER LINES

#8
20250372325
2025-12-04

HIGH VOLTAGE DIRECT CURRENT CIRCUIT PROTECTION SYSTEM AND METHOD

#9
20250364791
2025-11-27

VACUUM BOTTLE HOUSING MOLD

#10
20250340133
2025-11-06

HIGH CURRENT FAULT ISOLATION FOR ELECTRIC VEHICLES

#11
20250253644
2025-08-07

SYSTEM AND METHOD FOR MANAGING A FAULT IN A POWER TRANSMISSION NETWORK

#12
20250246881
2025-07-31

VACUUM BOTTLE HOUSING

#13
20250210973
2025-06-26

DC SYSTEM PROTECTION APPARATUS WITH COMMUNICATION RESETTING FUNCTION

#14
20250149880
2025-05-08

DI/DT Sensor for Fast Detection of Short Circuit Faults with a Solid-State Circuit Breaker

#15
20250105620
2025-03-27

LINE PROTECTION METHOD AND SYSTEM FOR WIND FARM CONNECTED TO FLEXIBLE DC SYSTEM

#16
20250096557
2025-03-20

DC FAULT MANAGEMENT IN ELECTRICAL POWER SYSTEM

#17
20250055263
2025-02-13

Vacuum break switch mass

#18
20250007271
2025-01-02

Circuit Breaker Unit

#19
20240364094
2024-10-31

ARC DETECTION FOR HIGH VOLTAGE SYSTEM

#20
20240283241
2024-08-22

PHOTOVOLTAIC POWER GENERATION SYSTEM, PHOTOVOLTAIC INVERTER, AND DIRECT CURRENT COMBINER BOX

#21
20240222944
2024-07-04

Vacuum break switch shock absorber

#22
20240170951
2024-05-23

Cutoff device for high-DC-voltage electric current with plasma tube

#23
20240170950
2024-05-23

DRIVE SYSTEM WITH PROTECTION CAPABILITY

#24
20240128741
2024-04-18

BIPOLAR HYBRID CIRCUIT BREAKER FOR LOW-VOLTAGE DC CIRCUITS

#25
20240120166
2024-04-11

DEVICE AND METHOD FOR SAFETY SWITCH OFF OF AN ELECTRICAL CONSUMER IN A VEHICLE

#26
20240097434
2024-03-21

Method for detecting abnormal direct current voltage measurement in high voltage flexible direct current transmission system

#27
20240055864
2024-02-15

Sensors for use in HVDC power transmission networks

#28
20240022066
2024-01-18

IMPROVEMENTS IN OR RELATING TO PROTECTION CIRCUITS

#29
20230420931
2023-12-28

FAULT DETECTION SYSTEMS AND METHODS FOR POWER GRID SYSTEMS

#30
20230402836
2023-12-14

Electrical circuit breaker for protecting energy distribution in an industrial plant

#31
20230378747
2023-11-23

AN ELECTRIC POWER SYSTEM

#32
20230341451
2023-10-26

Method and System for a pilot directional protection of LCC-HVDC lines based on virtual grounding resistance

#33
20230327427
2023-10-12

Fault detector for bipole power transmission schemes

#34
20230253822
2023-08-10

System and Method for Hybrid Power Generation with Grid Connection

#35
20230231377
2023-07-20

Method for protecting DC line impedance phase based on protection and control coordination

#36
20230178975
2023-06-08

Power supply system, protection coordination method and program

#37
20230141970
2023-05-11

HIGH VOLTAGE DIRECT CURRENT CIRCUIT PROTECTION SYSTEM AND METHOD

#38
20230101225
2023-03-30

Protection circuits for untethered cables

#39
20230099131
2023-03-30

Arc detection device, solar inverter, indoor wiring system, breaker, solar panel, solar panel- attached module, and junction box

#40
20230095385
2023-03-30

ARC detection device, solar inverter, indoor wiring system, circuit breaker, solar panel, solar panel attachment module, and junction box

#41
20230043622
2023-02-09

Multi-terminal DC power transmission system, common control device thereof, and fault recovery method for multi-terminal DC power transmission system

#42
20220368126
2022-11-17

Photovoltaic power generation system, photovoltaic inverter, and direct current combiner box

#43
20220365125
2022-11-17

A COMMUTATION FAILURE PROTECTION METHOD, AND APPARATUS, COMPUTER DEVICE AND STORAGE MEDIUM THEREOF

#44
20220337051
2022-10-20

Restoration of fault insulated feeder

#45
20220311241
2022-09-29

Source-network coordination type direct-current (DC) circuit breaker based on pre-charged capacitors for modular multilevel converters (MMC) based DC grid

#46
20220285931
2022-09-08

Direct-current transmission line protection method and system based on pure current characteristics

#47
20220206081
2022-06-30

Reliable fault detection and fault localization in a load zone of a DC system

#48
20220206055
2022-06-30

Transient based method for identifying faults in a high / medium voltage electric power transmission system

#49
20220200275
2022-06-23

Electrical network having fault protection control

#50
20220200274
2022-06-23

Electrical network

#51
20220173588
2022-06-02

Topology of a solid state power controller with two mid-capacitors

#52
20220172914
2022-06-02

Method for coordinating protective devices in a distribution grid

#53
20220166214
2022-05-26

Electric grid and method for operating an electric grid

#54
20220166206
2022-05-26

Circuit breaker device for DC voltage

#55
20220146595
2022-05-12

Detection of a ground fault in a direct-current network

#56
20220146594
2022-05-12

Locating a ground fault in a DC system

#57
20220131367
2022-04-28

Method and device for starting direct-current (DC) transmission line protection, and storage medium

#58
20220130628
2022-04-28

DC voltage switch

#59
20220102967
2022-03-31

Pulse circuit for providing a fault current in a DC voltage power supply grid

#60
20220077678
2022-03-10

Current cut-off device for high-voltage direct current with adaptive oscillatory circuit, and control method

#61
20220052549
2022-02-17

Power supply system

#62
20220052519
2022-02-17

Method for fault protection in HVDC grid, HVDC node of HVDC grid, and HVDC grid system

#63
20220045506
2022-02-10

Modular DC circuit breaker with integrated energy storage for future DC networks

#64
20220020544
2022-01-20

Apparatus for opening or closing a DC circuit, and method for automatically closing a DC circuit

#65
20210408796
2021-12-30

Battery inverter system

#66
20210384718
2021-12-09

Direct current (DC) circuit breaker

#67
20210351582
2021-11-11

Grounding fault protection method for high-voltage capacitor of direct-current filter

#68
20210333858
2021-10-28

Systems and methods for power start up in a multi-unit power distribution network

#69
20210328422
2021-10-21

Electronic valve apparatus

#70
20210265835
2021-08-26

Multi-voltage level direct current grid system and control protection method

#71
20210249864
2021-08-12

HVDC TRANSMISSION SCHEMES

#72
20210223751
2021-07-22

Fault detection systems and methods for power grid systems

#73
20210175705
2021-06-10

Fault current controller for a direct current power grid

#74
20210159694
2021-05-27

Multi-line supply unit for a vehicle control unit

#75
20210141010
2021-05-13

Method and device for locating faults along an energy supply chain for DC current systems

#76
20210135449
2021-05-06

Aircraft comprising a direct current electrical network and a protection system for said network

#77
20210119444
2021-04-22

HVDC transmission schemes

#78
20210114536
2021-04-22

Fail operational vehicle power supply

#79
20210096166
2021-04-01

Systems and methods to improve distance protection in transmission lines

#80
20210075218
2021-03-11

Energy storage system and multi-stage short circuit protection system thereof

#81
20210036509
2021-02-04

Electrical protection system and method for a high-voltage direct current system

#82
20200373753
2020-11-26

Devices, systems and methods to monitor and report wiring status for zone selective interlocking cables

#83
20200313423
2020-10-01

Transformer isolation response using direct current link

#84
20200262297
2020-08-20

Vehicle power supply system

#85
20200212669
2020-07-02

Highly redundant DC voltage network

#86
20200153238
2020-05-14

INTEGRATED FAULT CURRENT RISE LIMITER AND FAULT DETECTION DEVICE FOR DC MICROGRIDS

#87
20200144807
2020-05-07

REDUNDANT PROTECTION SYSTEM FOR A HYBRID ELECTRICAL SYSTEM

#88
20200136389
2020-04-30

Protection for an HVDC network

#89
20200127453
2020-04-23

DC HIGH-VOLTAGE ELECTRICAL INSTALLATION AND METHOD FOR CONTROLLING A CUT-OFF APPARATUS IN SUCH AN INSTALLATION

#90
20200116776
2020-04-16

Device for Detecting a Short Circuit, Protection Device and Associated Method for a High-Voltage Dc Network

#91
20200076184
2020-03-05

Direct current over voltage monitoring and protection

#92
20190386578
2019-12-19

Power conversion device and DC power transmission system

#93
20190363707
2019-11-28

DC power switching assembly and method

#94
20190334340
2019-10-31

Hybrid DC circuit breaker

#95
20190273376
2019-09-05

DC power system segregated into different protection zones

#96
20190212713
2019-07-11

Fault detection systems and methods for power grid systems

#97
20190199089
2019-06-27

Method for controlling an installation allowing DC current to be transmitted in a network while protecting said network from a short circuit fault

#98
20190190258
2019-06-20

Closing control method for high-voltage direct-current circuit breaker

#99
20190173279
2019-06-06

Power distribution system and method

#100
20190092257
2019-03-28

Fail operational vehicle power supply

#101
20190074685
2019-03-07

Interconnection equipment for a high-voltage DC grid

#102
20190036329
2019-01-31

Circuit breaker failure protection in a power substation

#103
20190020193
2019-01-17

Direct current switch-off device and control method thereof

#104
20190006838
2019-01-03

Combined direct current circuit breaker and application method thereof

#105
20180375323
2018-12-27

Communication bus overvoltage protection

#106
20180301895
2018-10-18

Direct current distance protection controllers

#107
20180301894
2018-10-18

Relating to direct current protection schemes

#108
20180294645
2018-10-11

SYSTEM FOR ISOLATING PORTIONS OF A POWER SUPPLY ARRAY

#109
20180294644
2018-10-11

Direct current distance protection schemes

#110
20180278155
2018-09-27

Supply system to a set of loads connected in parallel to a direct current supply bus

#111
20180261998
2018-09-13

Electric wire protection device

#112
20180261996
2018-09-13

Electric-wire protection device

#113
20180241213
2018-08-23

Electrical assembly for a power transmission network

#114
20180240627
2018-08-23

Direct-current interruption device

#115
20180229676
2018-08-16

Short-circuit protection for vehicle redundant power architecture

#116
20180166881
2018-06-14

Medium voltage direct current power collection systems and methods

#117
20180159316
2018-06-07

Power conversion device and DC power transmission system

#118
20180159315
2018-06-07

DC GRID

#119
20180145505
2018-05-24

Travelling wave protection of a transmission line based on high-pass filtering

#120
20180145499
2018-05-24

Bipolar DC power transmission scheme

#121
20180138695
2018-05-17

Arc-free DC circuit breaker

#122
20180120367
2018-05-03

Communication-less fault section identification for hybrid HVDC transmission systems

#123
20180115152
2018-04-26

Bipolar DC power transmission scheme

#124
20180106849
2018-04-19

Method and apparatus for detecting fault in a mixed configuration power transmission line

#125
20180013280
2018-01-11

Method of clearing a fault in a HVDC electrical network

#126
20170373498
2017-12-28

DISTRIBUTION OF ELECTRIC ENERGY ON A VESSEL

#127
20170331281
2017-11-16

DC electrical network

#128
20170255913
2017-09-07

System for distributing electrical energy

#129
20170229964
2017-08-10

Electric power system

#130
20170155244
2017-06-01

Transient voltage suppressor having built-in-test capability for solid state power controllers

#131
20170133834
2017-05-11

Transient protection for multi-terminal HVDC grid

#132
20170129339
2017-05-11

Device for monitoring a high-voltage on-board power supply system of an electrically operated vehicle for the occurrence of overloading

#133
20170084414
2017-03-23

Fault protection devices and methods for power systems

#134
20170074919
2017-03-16

Fault location in DC networks

#135
20170054291
2017-02-23

Fault protection in converter-based DC distribution systems

#136
20170047729
2017-02-16

Relay protection method and apparatus against LC parallel circuit detuning faults

#137
20160375778
2016-12-29

Power net system of fuel cell vehicle and method for controlling the same

#138
20160372911
2016-12-22

Technologies for zonal fault protection of DC distribution systems

#139
20160359319
2016-12-08

Direct current power distribution and protection system

#140
20160352091
2016-12-01

Fault location of DC distribution systems

#141
20160336737
2016-11-17

Circuit breaking arrangement

#142
20160315464
2016-10-27

Control device

#143
20160226251
2016-08-04

Direct current power system

#144
20160216311
2016-07-28

Method for identifying a faulted DC power transmission medium in a multi-terminal DC electrical network

#145
20160181799
2016-06-23

DC power generation system and protection method for DC power generation system

#146
20160099650
2016-04-07

Gate-power-supply device and semiconductor circuit breaker using same

#147
20160082907
2016-03-24

DC power system for marine applications

#148
20160072269
2016-03-10

Assembly for electrically protecting a potential short-circuit or an overload in a direct current power network having a system-determined, variable source-internal resistance

#149
20160006392
2016-01-07

Safe photovoltaic system

#150
20160006236
2016-01-07

Direct current circuit breaker and its implementation

#151
20150381108
2015-12-31

Safe photovoltaic system

#152
20150340859
2015-11-26

Method of fault clearance

#153
20150338472
2015-11-26

Method and device for detection of a fault in a protected unit

#154
20150333504
2015-11-19

Protection device for DC collection systems

#155
20150333503
2015-11-19

Centralized DC curtailment for overvoltage protection

#156
20150270704
2015-09-24

Method and apparatus for the protection of DC distribution systems

#157
20150171617
2015-06-18

Apparatus for switching in a DC voltage grid

#158
20150116883
2015-04-30

Electric-wire protection device

#159
20150116876
2015-04-30

Method of fault clearance

#160
20150043110
2015-02-12

Potential arc fault detection and suppression

#161
20150035364
2015-02-05

Control circuit for excess energy removal in power transmission lines

#162
20150028826
2015-01-29

Control circuit for DC network to maintain zero net change in energy level

#163
20150009594
2015-01-08

Control circuit

#164
20140376132
2014-12-25

System and method to interrupt a DC current in a high voltage circuit by use of an AC circuit breaker

#165
20140362483
2014-12-11

DC supply unit for a power provision unit

#166
20140361621
2014-12-11

DC-power system with system protection capabilities

#167
20140345667
2014-11-27

System for isolating portions of a power supply array

#168
20140313641
2014-10-23

Using the transfer switch of a hybrid circuit breaker as selector switch

#169
20140233140
2014-08-21

DC voltage circuit breaker

#170
20140233137
2014-08-21

DC-to-DC converter

#171
20140111294
2014-04-24

Electrical switching apparatus including transductor circuit and alternating current electronic trip circuit

#172
20140062196
2014-03-06

Systems and methods for power transmission with cable segment failover support

#173
20140055903
2014-02-27

Fast breaker failure detection for HVDC circuit breakers

#174
20140022680
2014-01-23

Current limitation system for limiting the effects of a fault in a DC grid and a method of operating a current limitation system

#175
20140002943
2014-01-02

DC grid and a method of limiting the effects of a fault in a DC grid

#176
20130286521
2013-10-31

Fault detection, isolation, location and reconnection systems and methods

#177
20130262922
2013-10-03

Centralized and networked protection system and method of a regional distribution network

#178
20130215536
2013-08-22

Fault clearing without a DC backup power source

#179
20130128630
2013-05-23

Method of controlling the power input to a HVDC transmission link

#180
20130106184
2013-05-02

HVDC switchyard and an HVDC switchyard system

#181
20130077204
2013-03-28

Breaker failure protection of HVDC circuit breakers

#182
20130057997
2013-03-07

Potential arc fault detection and suppression

#183
20130050888
2013-02-28

High voltage DC switchyard with semiconductor switches

#184
20130050881
2013-02-28

PLANT FOR TRANSMITTING HIGH VOLTAGE DC ELECTRIC POWER INCLUDING OVERVOLTAGE PROTECTION

#185
20120314327
2012-12-13

DC power supply insulation fault detection circuit

#186
20120256637
2012-10-11

Line fault detector

#187
20120228949
2012-09-13

DC electrical power system

#188
20120201059
2012-08-09

Fault current limitation in DC power transmission systems

#189
20120200966
2012-08-09

Protection system for an electrical power network

#190
20100284117
2010-11-11

Power distribution systems

#191
20100145537
2010-06-10

Method for avoidance of inadvertent protective tripping as a result of measurement errors within a protection system for an HVDC transmission installation

#192
20090316446
2009-12-24

Transmission system

#193
20090303647
2009-12-10

Apparatus for short circuit protection

#194
20090229847
2009-09-17

Earthing arrangement for a DC electrical system and a method of operating an earthing arrangement for a DC electrical system

#195
20090219656
2009-09-03

High voltage ground fault detection system

#196
20090213515
2009-08-27

Multiple-channel active sensing and switching device

#197
20090085574
2009-04-02

Method for locating phase to ground faults in DC distribution systems

#198
20090015064
2009-01-15

Selective independent overload and group overload protection circuit of power supply

#199
20080093924
2008-04-24

Power supply control device for on-vehicle electrical loads

#200
20070238362
2007-10-11

Electrical fault detection

#201
20070103831
2007-05-10

Intelligent safety device for vehicle on-board electric equipment

#202
20070008666
2007-01-11

Ground fault detector for vehicle

#203
20060291109
2006-12-28

Arcing detection system and method for vehicle

#204
20050162795
2005-07-28

Motor vehicle

#205
18093198
2023-07-25

Underarm gang operated vacuum break switch

#206
18056960
2023-12-12

High voltage DC fault detection