ClassID:

171589

G01R27/025 - CPC Classification

Classification description:

Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom; Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters

Recent Application in this class:
#1
20260110719
2026-04-23

CONTINUOUS ON - LINE INSULATION MEASUREMENT SYSTEM FOR INSULATED OR FLOATING NEUTRAL ELECTRICAL CIRCUITS

#2
20260098887
2026-04-09

COMPUTER SYSTEM AND METHOD FOR VOLTAGE MEASUREMENTS

#3
20260016521
2026-01-15

DIRECT CURRENT (DC) INSULATION MONITORING USING VOLTAGE DECAY PREDICTIONS

#4
20260011800
2026-01-08

Battery System Thermal Event Detection Method and Battery System Using the Same

#5
20250389762
2025-12-25

INTEGRATED ACTIVE ISOLATION MEASUREMENT

#6
20250370026
2025-12-04

LINK-SIDE INSULATION MEASUREMENT

#7
20250370017
2025-12-04

ELECTRIC MEASURING ARRANGEMENT AND MEASURING METHOD FOR A GROUND CONNECTION MONITORING SYSTEM FOR AN INSULATION MONITORING DEVICE AND INSULATION MONITORING DEVICE

#8
20250370016
2025-12-04

ISOLATION RESISTANCE MONITORING SYSTEM

#9
20250362330
2025-11-27

A MONITORING DEVICE, A SYSTEM AND A METHOD FOR MONITORING INSULATION CONDITION OF A MOTOR

#10
20250306071
2025-10-02

DETERMINING AN INSULATION RESISTANCE

#11
20250286472
2025-09-11

INVERTER WITH INTERMEDIATE CIRCUIT CENTER AND METHOD FOR MEASURING ISOLATION RESISTANCE BY MEANS OF CONTROLLED ASYMMETRY

#12
20250277834
2025-09-04

INSULATION RESISTANCE DETECTION DEVICE AND INSULATION RESISTANCE DETECTION METHOD

#13
20250180625
2025-06-05

METHOD AND APPARATUS FOR EVALUATING INSULATION PERFORMANCE OF SUBMARINE CABLE, AND MEDIUM

#14
20250172595
2025-05-29

METHOD AND INSULATION MONITORING ARRANGEMENT FOR A FUNCTIONALLY GROUNDED ELECTRIC INSTALLATION OPERATED USING A SUPPLY DIRECT VOLTAGE

#15
20250155507
2025-05-15

ISOLATION DETECTION

#16
20250150033
2025-05-08

APPARATUS FOR INSPECTING INSULATION STATE OF PHOTOVOLTAIC MODULE, AND METHOD FOR INSPECTING INSULATION STATE BY USING SAME

#17
20250138068
2025-05-01

METHOD FOR INSULATION MONITORING AND INSULATION MONITORING DEVICE WITH NETWORK BALANCING IN AN UNGROUNDED DIRECT VOLTAGE SYSTEM

#18
20250093401
2025-03-20

Systems and Methods for Wireless Test Modules of a Wireless Harness Automated Measurement System

#19
20250076353
2025-03-06

SYSTEM AND METHOD FOR ISOLATION RESISTANCE MEASUREMENT

#20
20250027978
2025-01-23

METHOD AND APPARATUS FOR DETECTING INSULATION IMPEDANCE OF DIRECT CURRENT SIDE OF PHOTOVOLTAIC INVERTER

#21
20250012835
2025-01-09

MEASUREMENT OF INSULATION RESISTANCE OF AN ELECTRICAL INSULATOR

#22
20250004025
2025-01-02

METHOD FOR COMPUTING AN INSULATION RESISTANCE IN AN UNGROUNDED DC POWER SUPPLY SYSTEM AT A CHANGEABLE DC LINE VOLTAGE

#23
20240426894
2024-12-26

METHOD AND ELECTRIC CIRCUIT ARRANGEMENT FOR SELECTIVE INSULATION MONITORING IN A POWER SUPPLY SYSTEM HAVING ISOLABLE SUBSYSTEMS

#24
20240353466
2024-10-24

INSULATION MONITORING DEVICE AND METHOD FOR CONTROLLING INSULATION MONITORING DEVICE

#25
20240345145
2024-10-17

METHOD FOR THE SELF-DIAGNOSIS OF A CIRCUIT FOR MEASURING THE INSULATION RESISTANCE OF A HIGH-VOLTAGE SYSTEM

#26
20240272212
2024-08-15

MOTOR DRIVE DEVICE CALCULATING INSULATION RESISTANCE VALUE OF MOTOR

#27
20240264211
2024-08-08

MOTOR DRIVE DEVICE THAT CALCULATES INSULATION RESISTANCE VALUE OF MOTOR

#28
20240201263
2024-06-20

Systems, devices, and methods for monitoring insulation conditions of high-voltage motors

#29
20240201238
2024-06-20

Method, Electronic Device and System for Iteratively Measuring the Insulation Resistance of an Energized Electrical Apparatus With Respect to Ground

#30
20240027509
2024-01-25

Method for Determining at Least One Current Capacitance Value of a Y Capacitance of a High-Voltage Wiring System, as Well as an Electronic Computing Device

#31
20240012042
2024-01-11

Method and electric circuit arrangement for determining a branch insulation resistance and a branch leakage capacitance in an ungrounded power supply system

#32
20230400516
2023-12-14

Detection Method and Apparatus for Battery System

#33
20230400489
2023-12-14

INVERTER AND METHOD FOR DETECTING INSULATION IMPEDANCE OF INVERTER

#34
20230393220
2023-12-07

SYSTEMS AND METHODS FOR USE IN HANDLING COMPONENTS

#35
20230393179
2023-12-07

METHOD AND DEVICE FOR MEASURING AN INSULATION RESISTANCE OF A DC VOLTAGE SOURCE CONNECTED TO A SPLIT INTERMEDIATE CIRCUIT IN MAINS PARALLEL OPERATION

#36
20230356596
2023-11-09

Vehicle Electrical System Having A High-Voltage Branch, A Low-Voltage Branch, And Low-Voltage-Side Insulation Fault Detection

#37
20230291021
2023-09-14

Battery System Thermal Event Detection Method and Battery System Using the Same

#38
20230280384
2023-09-07

Isolation resistance monitoring for high voltage systems

#39
20230266372
2023-08-24

INSULATION RESISTANCE TESTER

#40
20230264571
2023-08-24

Method for detecting an insulation fault in a vehicle on-board electrical system and vehicle overvoltage protection circuit

#41
20230251293
2023-08-10

DEVICE FOR DETERMINING THE ELECTRICAL RESISTANCE OF A SYSTEM, AND ASSOCIATED METHOD

#42
20230160933
2023-05-25

Method and device for determining the resistive component of the leakage current impedance in the alternating current network

#43
20230152358
2023-05-18

Method and device for monitoring insulation between a DC bus and protective earth

#44
20230064190
2023-03-02

Input sensor short-circuit inspection module and input sensor short-circuit inspection method using the same

#45
20230062761
2023-03-02

Apparatus and method for measuring insulation resistance of vehicle

#46
20230044324
2023-02-09

INSULATION FAULT RESPONSE METHOD AND APPARATUS FOR FUEL CELL VEHICLE

#47
20220388406
2022-12-08

Supply device, fuel cell vehicle, and method for limiting voltage in a supply device

#48
20220381812
2022-12-01

Earth fault detection apparatus

#49
20220365122
2022-11-17

Insulation resistance inspection system for battery module cell pouch

#50
20220344686
2022-10-27

FUEL CELL STACK INSULATION MONITORING SYSTEM

#51
20220291294
2022-09-15

Insulation resistance detection system for electric vehicle and insulation resistance detection method thereof

#52
20220289034
2022-09-15

Dynamic isolation monitoring with low sensitivity to noise

#53
20220268822
2022-08-25

Insulation impedance detection method, apparatus, and system

#54
20220268821
2022-08-25

FUEL CELL VEHICLE INSULATION RESISTOR FAULT DETECTION SYSTEM AND METHOD

#55
20220260620
2022-08-18

Isolation measurement monitoring for ASIL applications

#56
20220214388
2022-07-07

Insulation detection circuit for voltage balance

#57
20220170970
2022-06-02

Insulation resistance monitoring device

#58
20220146561
2022-05-12

Apparatus for estimating insulation resistance and battery system using the same

#59
20220113344
2022-04-14

Method for monitoring insulation monitoring circuit and battery management system

#60
20220011356
2022-01-13

Insulation resistance detection circuit and method

#61
20210357062
2021-11-18

INTERFERENCE DETECTION AND MITIGATION IN INDUCTIVE SENSOR APPLICATIONS AND DYNAMIC ADAPTATION BASED ON REAL-TIME NOISE DETECTION

#62
20210293865
2021-09-23

Insulation resistance detection device

#63
20210284029
2021-09-16

Ground fault detection device

#64
20210247428
2021-08-12

Measurement device

#65
20210231726
2021-07-29

Insulation detection circuit, detection method and battery management system

#66
20210231717
2021-07-29

METHOD AND DEVICE FOR DETERMINING THE DIVISION OF A TOTAL INSULATION RESISTANCE AND THE DIVISION OF A TOTAL SYSTEM LEAKAGE CAPACITANCE IN AN UNGROUNDED POWER SUPPLY SYSTEM

#67
20210172996
2021-06-10

Method and apparatus for monitoring isolation of an electric power bus

#68
20210172987
2021-06-10

Insulation impedance detection circuit and insulation impedance detection method of photovoltaic inverter system

#69
20210165026
2021-06-03

Circuit arrangement having an active measuring voltage for determining an insulation resistance against ground potential in an ungrounded power supply system

#70
20200363891
2020-11-19

Interference detection and mitigation in inductive sensor applications and dynamic adaptation based on real-time noise detection

#71
20200358139
2020-11-12

Insulation detection circuit and method, and battery management system

#72
20200200832
2020-06-25

Leakage current calculation device and leakage current calculation method

#73
20200191881
2020-06-18

Ground fault detection device

#74
20200141987
2020-05-07

System and method for measuring insulation resistance

#75
20200116770
2020-04-16

Single-fault-tolerant isolation resistance determination in a photovoltaic system

#76
20200072935
2020-03-05

Methods and devices for testing the function of an insulation monitoring device

#77
20190351771
2019-11-21

Bus leakage resistance estimation for electrical isolation testing and diagnostics

#78
20190323981
2019-10-24

Mineral insulated sheathed assembly with insulation resistance indicator

#79
20190310300
2019-10-10

Ground fault detection apparatus

#80
20190308505
2019-10-10

Ground fault detection apparatus

#81
20190302164
2019-10-03

Isolated grounding effectiveness monitor

#82
20190302161
2019-10-03

Resonant phase sensing of resistive-inductive-capacitive sensors

#83
20190267694
2019-08-29

Adaptive voltage modification (AVM) controller for mitigating power interruptions at radio frequency (RF) antennas

#84
20190250204
2019-08-15

Device and method for insulation monitoring including identification of a faulty outer conductor in a three-phase ungrounded power supply system

#85
20190242933
2019-08-08

Device and method for measuring insulation resistance of battery pack by using negative electrode relay

#86
20190242932
2019-08-08

Isolation monitoring device and method

#87
20190237815
2019-08-01

Insulation detection circuit and method, and battery management system

#88
20190235013
2019-08-01

Parameter selection method and apparatus, and storage medium for insulation detection circuit

#89
20190178941
2019-06-13

Motor driving device and measuring method

#90
20190162773
2019-05-30

Motor driving device and measuring method

#91
20190101581
2019-04-04

Method and monitoring device for selectively determining a partial system leakage capacitance in an ungrounded power supply system

#92
20190100104
2019-04-04

Ground fault detection apparatus

#93
20190094277
2019-03-28

Output resistance testing integrated circuit

#94
20190086464
2019-03-21

Ground fault detection apparatus

#95
20190077266
2019-03-14

System and method for controlling the energization of an electrical load of a vehicle

#96
20190064280
2019-02-28

Battery detection circuit and battery management system

#97
20190064279
2019-02-28

Insulation detection circuit, detection method, and battery management system

#98
20190025357
2019-01-24

Frequency regulation method and apparatus

#99
20190011504
2019-01-10

Apparatus and method for calculating insulation resistance of battery

#100
20190001821
2019-01-03

Method and system for monitoring electrical insulation resistance in an electric system

#101
20180372790
2018-12-27

Built in test of remote isolation

#102
20180340971
2018-11-29

Insulation detector and electric apparatus

#103
20180321291
2018-11-08

Output resistance testing method

#104
20180302030
2018-10-18

Inverter having grid disconnection point and insulation resistance measurement and method for measuring an insulation resistance

#105
20180275178
2018-09-27

Testing method for sheet resistance and contact resistance of connecting point of sheet material

#106
20180267094
2018-09-20

Technique for insulation monitoring in vehicles

#107
20180252754
2018-09-06

INSULATION STATE DETECTION DEVICE

#108
20180246156
2018-08-30

Technique for insulation monitoring in vehicles

#109
20180222342
2018-08-09

Device and method for measuring isolation resistance of battery powered systems

#110
20180154776
2018-06-07

Electrical system comprising a circuit for detecting an electrical insulation fault

#111
20180074108
2018-03-15

Systems and methods for measuring isolation resistance

#112
20180059157
2018-03-01

Low frequency impedance measurement with source measure units

#113
20180003758
2018-01-04

Method for measuring quick changes in low surface conductivity of dielectrics under electromagnetic interference of line voltage and equipment to perform this type of measurement

#114
20170343593
2017-11-30

Apparatus for determining insulation resistance at a PV generator, and photovoltaic installation

#115
20170328940
2017-11-16

Insulation resistance measuring device and method

#116
20170326986
2017-11-16

Bus leakage resistance estimation for electrical isolation testing and diagnostics

#117
20170315205
2017-11-02

Methods and devices for testing the function of an insulation monitoring device

#118
20170297447
2017-10-19

Battery system with a battery, which is designed to supply a high-voltage network with electric energy, and a measuring device for measuring at least one insulation resistance of the battery

#119
20170160333
2017-06-08

Insulation problem detection apparatus

#120
20170113553
2017-04-27

Bus leakage resistance estimation for electric vehicle

#121
20170108544
2017-04-20

Apparatus and method for monitoring an electrical insulation for an onboard power supply system of a vehicle

#122
20170080804
2017-03-23

System and method for assisting the start of an electrically powered vehicle

#123
20170045562
2017-02-16

Method and device for ascertaining an insulation resistance, and high voltage battery system having a device of this type

#124
20170016951
2017-01-19

Insulation resistance measuring device and method capable of rapidly measuring insulation resistance

#125
20160377670
2016-12-29

Insulation detector and electric apparatus

#126
20160341775
2016-11-24

Electrostatic protection testing, monitoring, and human-machine visual interface system and methods of use

#127
20160336732
2016-11-17

Method and device for shutting down an installation part exhibiting an insulation fault in an ungrounded power supply system

#128
20160258993
2016-09-08

AC traction motor fault detection using DC bus leakage hardware

#129
20160252587
2016-09-01

Deterioration detecting apparatus and deterioration detecting method

#130
20160252559
2016-09-01

Deterioration detecting apparatus and deterioration detecting method

#131
20160252556
2016-09-01

Deterioration detecting apparatus and deterioration detecting method

#132
20160252555
2016-09-01

Apparatus and method for diagnosing hardware in an insulation resistance monitoring system for a vehicle

#133
20160245867
2016-08-25

In-situ testing of subsea power components

#134
20160245855
2016-08-25

Systems and methods for insulation impedance monitoring

#135
20160216220
2016-07-28

Method and device for determining an insulation variable

#136
20160214484
2016-07-28

Bus leakage resistance estimation for electric vehicle

#137
20160193926
2016-07-07

Multifunctional monitoring of electrical systems

#138
20160163127
2016-06-09

Method for diagnosing leakage of electric parts and servicing guide of driving state for vehicle in battery management system

#139
20160096433
2016-04-07

Bus leakage resistance estimation for electrical isolation testing and diagnostics

#140
20160025816
2016-01-28

System and method for high voltage system isolation resistance measurement

#141
20150362539
2015-12-17

Output resistance testing structure

#142
20150333378
2015-11-19

Traction battery leakage detection system for electrified vehicle

#143
20150285850
2015-10-08

Insulation resistance detection method and circuit for ungrounded DC power supply system

#144
20150276846
2015-10-01

High voltage isolation measurement system

#145
20150270823
2015-09-24

Configurable bias tee

#146
20150256116
2015-09-10

Motor drive device having insulation resistance detecting function and method of detecting insulation resistance of motors

#147
20150226782
2015-08-13

Method and system for estimating the insulation resistance between a battery and an electrical earth

#148
20150194922
2015-07-09

Motor drive device including insulation deterioration detection function and insulation resistance detection method of motor

#149
20150130509
2015-05-14

Nanoelectromechanical antifuse and related systems

#150
20150130506
2015-05-14

Defense against counterfeiting using antifuses

#151
20150084654
2015-03-26

Insulation resistance measurement for inverters

#152
20140266245
2014-09-18

Apparatus and method for insulation testing of an electrical supply network

#153
20140159747
2014-06-12

Methods and circuits for measuring a high impedance element based on time constant measurements

#154
20140152224
2014-06-05

Motor drive circuit, motor device, and moving vehicle

#155
20140145729
2014-05-29

Low frequency impedance measurement with source measure units

#156
20140114591
2014-04-24

Method for monitoring and measuring an insulation resistance with interference-resistant measuring signal

#157
20140097854
2014-04-10

Isolation monitoring using a test signal of variable frequency

#158
20140084934
2014-03-27

System and method for determining an isolation resistance of a battery pack disposed on a vehicle chassis

#159
20140058687
2014-02-27

High voltage bus-to-chassis isolation resistance and Y-capacitance measurement

#160
20130314097
2013-11-28

Device for detecting the insulation resistance of a high voltage battery system

#161
20130223040
2013-08-29

Standard capacitance box output device

#162
20130214788
2013-08-22

Battery insulation resistance measurement methods, insulation resistance measurement methods, insulation resistance determination apparatuses, and articles of manufacture

#163
20130176041
2013-07-11

Insulation resistance measurement circuit having self-test function without generating leakage current

#164
20130043892
2013-02-21

RESISTANCE MEASUREMENT CIRCUIT

#165
20130027049
2013-01-31

Method for Determining Battery Pack Isolation Resistance Via Dual Bus Monitoring

#166
20120319660
2012-12-20

Apparatus and method for measuring ground impedance of a circuit

#167
20120280697
2012-11-08

Vehicular insulation resistance detection apparatus

#168
20120126839
2012-05-24

Method and device for monitoring the insulation of ungrounded DC and AC voltage networks

#169
20120119755
2012-05-17

Insulation resistance measurement device and insulation resistance measurement method

#170
20120081135
2012-04-05

Insulation measurement apparatus

#171
20120016613
2012-01-19

Insulation resistance measuring circuit free from influence of battery voltage

#172
20110254558
2011-10-20

Testing system and method for testing a battery cell

#173
20110140714
2011-06-16

Determination of insulation resistance of an electric DC circuit

#174
20110119004
2011-05-19

Method and a Device for Measuring and Calculating the Insulation Resistance of a High Voltage Power Management System in a Hybrid Power Vehicle

#175
20110115490
2011-05-19

Battery insulation resistance measurement methods, insulation resistance measurement methods, insulation resistance determination apparatuses, and articles of manufacture

#176
20110084705
2011-04-14

Insulation measuring apparatus

#177
20110025298
2011-02-03

Determining degraded insulating ability in insulation provided between two objects of an inductively operating element

#178
20110022338
2011-01-27

DETERMINING DEGRADED INSULATING ABILITY IN AN INDUCTIVELY OPERATING ELEMENT

#179
20100315096
2010-12-16

Insulation resistance detecting apparatus

#180
20100308841
2010-12-09

Circuit arrangement for monitoring an electrical insulation

#181
20090323233
2009-12-31

APPARATUS AND METHOD OF DETERMINING INSULATION RESISTANCE IN AN UNGROUNDED MOBILE VEHICLE ELECTRICAL BUS SYSTEM

#182
20090289640
2009-11-26

Insulation measurement apparatus

#183
20090289639
2009-11-26

Insulation measurement method and insulation measurement apparatus

#184
20090262905
2009-10-22

Method and device for determining the leakage resistance of at least one wire of a subscriber line having a number of wires in a communication network

#185
20090185320
2009-07-23

Detection of current leakage through opto-switches

#186
20090134881
2009-05-28

Insulation resistance detection system, insulation resistance detection apparatus and insulation resistance detection method

#187
20090108850
2009-04-30

Insulation resistance decrease detector for industrial vehicle

#188
20090002903
2009-01-01

Power supply device, electrically-driven vehicle incorporating power supply device, and method of controlling power supply device

#189
20080211518
2008-09-04

Method and apparatus for measuring electrical conductivity

#190
20080197855
2008-08-21

Insulation Resistance Drop Detector and Failure Self-Diagnosis Method for Insulation Resistance Drop Detector

#191
20080119976
2008-05-22

Prognostic for loss of high-voltage isolation

#192
20060003198
2006-01-05

Apparatus and method for measuring the insulation resistance of a fuel cell system

#193
17749030
2024-12-31

Systems and methods for isolation resistance monitoring in a battery bank

#194
16053219
2019-07-02

System and method for detecting a contact between an aerial device and an electrical power source

#195
15983925
2020-09-22

Automatic insulation resistance testers with heater

#196
15495478
2018-05-22

Automatic insulation resistance testers

#197
13789534
2014-06-10

Hybrid vehicle system loss learning