ClassID:

216805

H02H7/09 - 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 for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption

Recent Application in this class:
#1
20250364802
2025-11-27

END EFFECTOR WITH INTEGRATED FEEDBACK PROTECTION DEVICE, AND METHOD

#2
20250293512
2025-09-18

SYSTEM AND METHOD FOR PRE-CHARGE PROTECTION CIRCUIT

#3
20250260221
2025-08-14

DEVICE FOR THE ELECTRICAL PROTECTION OF POWER SUPPLY CABLES FOR PERMANENT-MAGNET MOTORS

#4
20240429702
2024-12-26

POWER ADJUSTING SYSTEM AND METHOD

#5
20240348183
2024-10-17

MOTOR DRIVE DEVICE HAVING OVERVOLTAGE PROTECTION CIRCUIT

#6
20240332951
2024-10-03

Method for adaptively adjusting PWM duty cycle, circuit and motor driving system

#7
20240120830
2024-04-11

System for Controlling an Inductor Freewheeling Voltage

#8
20240120731
2024-04-11

SEMICONDUCTOR PACKAGE FOR A MULTI-PHASE MOTOR DRIVING CIRCUIT

#9
20220393460
2022-12-08

Device and process for fault detection of a power device

#10
20220393459
2022-12-08

Motor protecting circuit

#11
20220200268
2022-06-23

SOLID STATE CIRCUIT BREAKER

#12
20220077675
2022-03-10

OVERVOLTAGE PROTECTION CIRCUIT

#13
20220037874
2022-02-03

External power supply system for spindle

#14
20210408947
2021-12-30

Electrically commutated motor driving device and control method thereof

#15
20210066908
2021-03-04

Motor protection relay interface using magnetometer-based sensors

#16
20210036695
2021-02-04

Clamp circuit and power module using the same

#17
20200186074
2020-06-11

Motor control method, power conversion device, motor module, and electric power steering device

#18
20200071127
2020-03-05

Elevator

#19
20200049769
2020-02-13

Method for detecting an insulation fault in a motor arrangement, method for detecting a motor phase interruption in a motor arrangement, and drive circuit for driving an electronically commutated motor

#20
20190187777
2019-06-20

Electrical apparatus

#21
20190165566
2019-05-30

Circuit for loss of phase detection

#22
20190089146
2019-03-21

Soft-starter AC-AC converter with integrated solid-state circuit breaker and method of operation thereof

#23
20190067933
2019-02-28

Electronic control device having multiple system circuits

#24
20190054792
2019-02-21

Method and device for actuating an actuator device, and actuator device

#25
20180375321
2018-12-27

Power electronics unit

#26
20180233900
2018-08-16

Compressor protection and grid fault detection device

#27
20180212419
2018-07-26

Drive device

#28
20180175616
2018-06-21

Overvoltage protection circuit

#29
20180129194
2018-05-10

Wireless communication enabled relay

#30
20180090925
2018-03-29

Motor drive

#31
20180074098
2018-03-15

Current detecting apparatus

#32
20170317638
2017-11-02

Motor driver circuit and process of matching received, determined voltages

#33
20170317615
2017-11-02

Fault shutdown control of an electric machine in a vehicle or other DC-powered torque system

#34
20170141715
2017-05-18

Motor drive apparatus having function for determining abnormality of main power supply voltage

#35
20170093149
2017-03-30

MOTOR DRIVING CIRCUIT AND METHOD FOR DETECTING OUTPUT PHASE LOSS

#36
20170063278
2017-03-02

Method and apparatus for protecting circuit

#37
20170054287
2017-02-23

Compressor protection and grid fault detection device

#38
20170017209
2017-01-19

Motor control apparatus equipped with protection operation command unit

#39
20160372916
2016-12-22

Method of operating a protection device, associated computer program product, protection device and electrical installation

#40
20160360650
2016-12-08

Air-moving assemblies with flywheels

#41
20160336881
2016-11-17

Single phase motor energy economizer for regulating the use of electricity

#42
20160329824
2016-11-10

Power conversion device with overvoltage suppression

#43
20160329699
2016-11-10

Air conditioner and compressor protection circuit thereof

#44
20160099672
2016-04-07

Independent pathways for detecting fault condition in electric motor

#45
20160094022
2016-03-31

Fail-safe device corresponding apparatus and vehicle

#46
20160043675
2016-02-11

Alternator overvoltage protection circuit

#47
20160013632
2016-01-14

Protection system and method for an electrical variable speed doubly fed induction machine

#48
20150256112
2015-09-10

DC pre charge circuit

#49
20150241514
2015-08-27

Switchgear for a single-phase motor and a three-phase motor

#50
20150229120
2015-08-13

Over-voltage prevention device

#51
20150155703
2015-06-04

Alternator overvoltage protection circuit

#52
20150130393
2015-05-14

Solid-state relay for running direction control of three-phase alternating current motor and method thereof

#53
20150085403
2015-03-26

Soft shutdown for isolated drivers

#54
20150002971
2015-01-01

Communication line driver protection circuitry, systems and methods

#55
20140375238
2014-12-25

Overvoltage arrester for an electrical drive

#56
20140361722
2014-12-11

Diagnosis of over-current conditions in bipolar motor controllers

#57
20140350791
2014-11-27

Vehicle power steering control apparatus

#58
20140277882
2014-09-18

Control strategy for an electric machine in a vehicle

#59
20140265949
2014-09-18

Motor control devices and methods

#60
20140247524
2014-09-04

Three-phase detection module

#61
20140242491
2014-08-28

Fuel cell system including diagnostic technique for unbalanced compressor

#62
20140218828
2014-08-07

Power protection apparatus and method

#63
20140192442
2014-07-10

Alternator overvoltage protection circuit

#64
20140180611
2014-06-26

Nonvolatile thermal memory method and apparatus for electronic overload relay

#65
20140118867
2014-05-01

Drive circuits and systems for motor controller protection

#66
20140118865
2014-05-01

Disconnection detecting device for rotating electrical machine, method for detecting disconnection of rotating electrical machine

#67
20140111890
2014-04-24

Bi-directional bipolar junction transistor for high voltage electrostatic discharge protection

#68
20140077745
2014-03-20

Drive control device and drive control method

#69
20140022676
2014-01-23

Circuit with motor driver spike suppression

#70
20130279081
2013-10-24

Motor control center and communication system therefor

#71
20130141026
2013-06-06

MOTOR WITH CIRCUITS FOR PROTECTING MOTOR FROM INPUT POWER OUTAGES OR SURGES

#72
20130135778
2013-05-30

Automatic reset discrimination system and method for a self powered electronic protection device

#73
20130121051
2013-05-16

DC pre-charge circuit

#74
20130107401
2013-05-02

Time delay with control voltage sensing

#75
20130083434
2013-04-04

Diagnosis of over-current conditions in bipolar motor controllers

#76
20130043878
2013-02-21

Communication line driver protection circuitry, systems and methods

#77
20120286709
2012-11-15

Motor with circuits for protecting motor from input power outages or surges

#78
20120280709
2012-11-08

Compressor protection and grid fault detection device

#79
20120229070
2012-09-13

Single phase motor energy economizer for regulating the use of electricity

#80
20120217919
2012-08-30

Open phase detection system and method for three-phase motor

#81
20120120534
2012-05-17

Three-phase detection module

#82
20120039006
2012-02-16

Compressor protection and grid fault detection device

#83
20110273122
2011-11-10

Motor drive device

#84
20110149446
2011-06-23

Electronic system and protection method for electric motors

#85
20100328825
2010-12-30

System and method for detecting a fault condition

#86
20100253266
2010-10-07

Motor with circuits for protecting motor from input power outages or surges

#87
20100085673
2010-04-08

OVER-VOLTAGE AND UNDER-VOLTAGE PROTECTION SYSTEM

#88
20100052589
2010-03-04

Method of detecting output phase loss for motor driver

#89
20090284877
2009-11-19

Integrated overload and low voltage interrupt module

#90
20090225479
2009-09-10

Compressor protection and grid fault detection device

#91
20090146593
2009-06-11

Motor controller of air conditioner

#92
20090128972
2009-05-21

Three-phase detection module

#93
20080294360
2008-11-27

Method for detecting the loss of one or more phases in a permanent-magnet synchronous electric motor

#94
20080044702
2008-02-21

Diagnostic system for unbalanced motor shafts for high speed compressor

#95
20070291428
2007-12-20

Aircraft applicable circuit imbalance detection and circuit interrupter and packaging thereof

#96
20070291427
2007-12-20

Aircraft applicable circuit imbalance detection and circuit interrupter and packaging thereof

#97
20070177324
2007-08-02

Overload release

#98
20070085526
2007-04-19

Unbalanced current detection

#99
20070076335
2007-04-05

Protection apparatus for an electrical load

#100
20060186914
2006-08-24

Phase-loss detection for rotating field machine

#101
20050018369
2005-01-27

Aircraft applicable circuit imbalance detection and circuit interrupter and packaging thereof

#102
17132214
2022-04-12

Method for determining the condition of one or more rotating machine assets and profiling their maintenance needs using partial discharge measurements

#103
15077321
2017-07-04

Highly integrated relay for HVAC systems in large vehicles