H02H3/26 - CPC Classification Index

ClassID:

216709 ⎘

H02H3/26 - CPC Classification

Classification description:

Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents

Sub-classes:

H02H3/265 » {responsive to phase angle between voltages or between currents} 31
H02H3/28 » involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus 81
H02H3/32 » involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors 77
H02H3/36 » involving comparison of the voltage or current values at corresponding points of different systems, e.g. of parallel feeder systems 8

Recent Application in this class:

20250323521

2025-10-16

CONTROL OF STATIC TRANSFER SWITCH SYSTEM FOR VOLT-SECOND BALANCE TRANSFER

20250210966

2025-06-26

PROTECTION DEVICE FOR A HEATABLE CLOTHING GARMENT SUBMERGED IN WATER

20250158386

2025-05-15

POWER SUPPLY SYSTEM, POWER CONDITIONING APPARATUS, AND POWER CONDITIONING SYSTEM

20250079826

2025-03-06

SAFETY DEVICE FOR AN ELECTRIC DC GRID, ONBOARD ELECTRICAL SYSTEM FOR A VEHICLE, VEHICLE, AND DC CHARGING STATION

20250030234

2025-01-23

POWER PROTECTION SYSTEM

20240372354

2024-11-07

CONTROL APPARATUS AND POWER CONVERSION APPARATUS IN PHOTOVOLTAIC SYSTEM

20240079869

2024-03-07

End of line protection with trip signal engaging

20240047961

2024-02-08

CIRCUIT BREAKER DEVICE AND METHOD

20230318289

2023-10-05

End of line protection

#10

20230318281

2023-10-05

Over-voltage protection circuit for use in USB Type-C port and related method

#11

20230288496

2023-09-14

Potential difference early-warning circuit and system

#12

20220263309

2022-08-18

USB type-C/PD controller having integrated VBUS to CC short protection

#13

20210318393

2021-10-14

DIFFERENTIAL PROTECTION SCHEME

#14

20210210946

2021-07-08

Leakage current protection device with automatic or manual reset after power outage

#15

20210184449

2021-06-17

Devices for detecting an arc fault and associated arc-fault-protection units

#16

20210119438

2021-04-22

Interface control circuit and control method thereof

#17

20210044101

2021-02-11

USB type-C/PD controller having integrated VBUS to CC short protection

#18

20200208739

2020-07-02

Current control device

#19

20200185901

2020-06-11

Method and apparatus for suppressing impact of compensator on line distance protection

#20

20200088780

2020-03-19

Distance protection of electric power delivery systems using time domain and frequency domain

#21

20200044435

2020-02-06

Downed conductor detection

#22

20190319447

2019-10-17

USB type-C/PD controller having integrated VBUS to CC short protection

#23

20190199080

2019-06-27

Arc fault detection system

#24

20190115745

2019-04-18

Space-limited protection module with at least two overvoltage protection elements in parallel current branches

#25

20180351345

2018-12-06

Ground fault overvoltage relay device

#26

20180149691

2018-05-31

Methods and systems for open-phase detection in power transformers

#27

20180062377

2018-03-01

Power supply device, detection circuit and power supply method thereof

#28

20170358919

2017-12-14

Network protector control for spot network fed from feeder sources having voltage differences

#29

20170012617

2017-01-12

Methods and apparatus for power switch fault protection

#30

20160329700

2016-11-10

System for detecting a falling electric power conductor and related methods

#31

20160190794

2016-06-30

Overvoltage protection circuit for USB interface

#32

20160156172

2016-06-02

Interface supply system

#33

20160036214

2016-02-04

System and method for monitoring and controlling electrical network

#34

20160020597

2016-01-21

Reinstallable circuit interrupting device with vibration resistant miswire protection

#35

20150244164

2015-08-27

Overcurrent detection circuit and method, load switch, and portable device

#36

20150029628

2015-01-29

Low current protection circuit

#37

20140368956

2014-12-18

Apparatus, System, and/or Method for Intelligent Motor Protection and/or Control

#38

20140362480

2014-12-11

Safety switching device with power supply

#39

20140321013

2014-10-30

Pulsed interrupter and method of operation

#40

20140301000

2014-10-09

Battery System and Ground Fault Detecting Device

#41

20140300999

2014-10-09

EXCESS POWER PROTECTION CIRCUIT

#42

20140233142

2014-08-21

APPARATUS AND METHOD FOR DETECTING VOLTAGE UNBALANCE, AND POWER METER USING THE SAME

#43

20140168841

2014-06-19

Current differential relay and current differential relay system using current differential relay thereof

#44

20140139961

2014-05-22

DEVICE FOR PROVIDING PROTECTION AGAINST ELECTRICAL SHOCK HAZARDS INVOLVING TWO CIRCUIT CONDUCTORS

#45

20140043117

2014-02-13

Electromechanical apparatus and electrical switching apparatus employing electronic circuit to condition motor input power

#46

20140028116

2014-01-30

System for detecting a falling electric power conductor and related methods

#47

20130250458

2013-09-26

Leveraging inherent redundancy in a multifunction IED

#48

20130241678

2013-09-19

Reinstallable circuit interrupting device with vibration resistant miswire protection

#49

20130241498

2013-09-19

Lithium starter battery and solid state switch therefor

#50

20130162207

2013-06-27

Devices and methods for the safe driving, charging and energy recovery operation of an electric vehicle

#51

20130155559

2013-06-20

Data cable and electronic device using same

#52

20130120888

2013-05-16

Current differential replay apparatus

#53

20120249070

2012-10-04

Devices and methods for the safe driving, charging and energy recovery operation of an electric vehicle

#54

20110134575

2011-06-09

Heat sensor responsive to electrical overloads

#55

15912204

2020-03-31

2-D lamp with integrated thermal management and near-ideal light pattern

#56

14846665

2017-01-03

2-D lamp with integrated thermal management and near-ideal light pattern