ClassID:

171598

G01R27/20 - 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 earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates

Sub-classes:
Recent Application in this class:
#1
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

#2
20250362331
2025-11-27

METHOD AND DEVICE FOR DETERMINING A GROUNDING IMPEDANCE

#3
20250306074
2025-10-02

SYSTEM GROUND DETECTION AND AUTO-CONFIGURATION

#4
20250237685
2025-07-24

PROTECTIVE EARTH MONITORING SYSTEM AND METHOD

#5
20250044331
2025-02-06

METHOD FOR DETERMINING A GROUNDING RESISTANCE, GROUNDING RESISTANCE SURVEILLANCE SYSTEM AND MEASUREMENT DEVICE

#6
20240151759
2024-05-09

MULTI-CHANNEL AUTOMATED EARTH GROUND RESISTANCE SYSTEM AND METHOD FOR MEASURING EARTH GROUND RESISTANCE

#7
20240044960
2024-02-08

METHOD AND DEVICE FOR MEASURING AN EARTH RESISTANCE IN A BATTERY CHARGING STATION

#8
20240036092
2024-02-01

Measuring the impedance in grounding systems

#9
20230341451
2023-10-26

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

#10
20220329449
2022-10-13

Filtering-based power supply apparatus, power sourcing equipment, and power supply system

#11
20220260621
2022-08-18

Method, apparatus and system for measuring resistance parameter of grounding system, and monitoring network

#12
20210405128
2021-12-30

Socket detection apparatus and method for supporting anomaly detection of earth wire and neutral wire

#13
20200408850
2020-12-31

Method for detecting insulation damage location in reflux rail of subway/coal mine and transition resistance thereof

#14
20200049748
2020-02-13

High Frequency Or Multifrequency Resistivity Tool

#15
20190377022
2019-12-12

Grounding monitoring system, method, device and computer readable storage medium

#16
20190258213
2019-08-22

Apparatus and method for selecting ground capacitor

#17
20190219620
2019-07-18

System for monitoring resistance and current in ground line

#18
20190148929
2019-05-16

Dual use vehicular AC generator

#19
20190086456
2019-03-21

Control valve

#20
20190072610
2019-03-07

System and method for electric current leakage detection in a land seismic system

#21
20180310392
2018-10-25

ANTI-ELECTROSTATIC WRIST STRAP AND GROUND DETECTION DEVICE

#22
20180210014
2018-07-26

Clamp meter

#23
20180120246
2018-05-03

Nondestructive inspection method for coatings and ceramic matrix composites

#24
20170110869
2017-04-20

ELECTRICAL MEASURING DEVICE FOR MEASURING THE RESISTANCE OF AN EARTH CONNECTION OF AN ELECTRICAL FACILITY

#25
20170097379
2017-04-06

Method of measuring the energy consumption of the branches of an electrical network and measurement equipment implementing said method

#26
20160124048
2016-05-05

Portable diagnostic apparatus for testing circuit breakers

#27
20150241491
2015-08-27

Electrical resistance measuring device for tire

#28
20150198644
2015-07-16

Device for measuring ground connection resistance and onboard charger for a vehicle provided with such a device

#29
20150015281
2015-01-15

Resistance measurement

#30
20150002163
2015-01-01

Device for estimating the impedance of an electric earth connection, associated estimation method and electric power supply system

#31
20140278172
2014-09-18

Methods and systems for adaptive distance protection

#32
20140266249
2014-09-18

Ground potential rise sensors

#33
20140266236
2014-09-18

Earthed connection detection

#34
20140247063
2014-09-04

Earth Ground Tester With Remote Control

#35
20140176163
2014-06-26

Device and method for estimating the resistance of the ground connection for an electrical apparatus

#36
20140015538
2014-01-16

Method of measuring earth ground resistance of a pylon

#37
20130300424
2013-11-14

Measurement of a resistance of a switching contact of an electrical circuit breaker

#38
20130191059
2013-07-25

Earth/ground clamp for measuring earth resistance of electrical installations

#39
20130154651
2013-06-20

Earth ground tester with remote control

#40
20120043979
2012-02-23

Measuring system for a down conductor of a wind turbine blade

#41
20110298466
2011-12-08

Ground monitor

#42
20110121845
2011-05-26

Earth ground tester with remote control

#43
20110121844
2011-05-26

METHOD OF MEASURING EARTH GROUND RESISTANCE OF A PYLON

#44
20100283491
2010-11-11

Double-Clamp Earth Tester Device

#45
20100148787
2010-06-17

High Frequency or Multifrequency Resistivity Tool

#46
20100134114
2010-06-03

Apparatus and Method for Three-Pole Type Measuring Specific Soil Resistance Measurement for Distribution Grounding

#47
20100007363
2010-01-14

SYSTEM AND METHOD FOR DETERMINING IN-LINE INTERFACIAL OXIDE CONTACT RESISTANCE

#48
20090322358
2009-12-31

Resistance measuring apparatus

#49
20090146681
2009-06-11

Method and apparatus for estimating resistance and capacitance of metal interconnects

#50
20080265897
2008-10-30

Method of detecting soil structure using voltage slope and measuring earth resistance