Patents-Review.com
ClassID:

172197 ⎘

G01R35/02 - CPC Classification

Classification description:

Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating

Recent Application in this class:
#1
20260153585
2026-06-04

Non-Contact Voltage Tester

 #2
20260074635
2026-03-12

LINEAR PARAMETER-VARYING OBSERVER FOR ESTIMATING PHASE CURRENT OF AN ELECTRIC MOTOR CONTROLLER

 #3
20260063748
2026-03-05

ELECTRONIC TRANSFORMER CALIBRATION METHOD AND APPARATUS

 #4
20250155398
2025-05-15

GAS SENSOR

 #5
20250052834
2025-02-13

SMART CURRENT TRANSFORMER SYSTEM

 #6
20240168066
2024-05-23

System and method for verifying alternating current (AC)/direct current (DC) conversion of ultralow-frequency voltage based on quantum technology

 #7
20230408617
2023-12-21

Calibration unit, calibration system and calibration method for a vector network analyzer

 #8
20230296713
2023-09-21

TRANSFORMER MONITORING APPARATUS

 #9
20230236224
2023-07-27

MEASURING DISSIPATION FACTOR OF VOLTAGE DIVIDER OF CAPACITOR VOLTAGE TRANSFORMERS

 #10
20230152409
2023-05-18

Methods, apparatuses, systems, and computer program products for multi-point shunt calibration

 #11
20230077845
2023-03-16

Current transformer with test wire

 #12
20220246350
2022-08-04

Current Transformer with Optic Fiber Mode Electronic Circuit

 #13
20220128642
2022-04-28

Methods, apparatuses, systems, and computer program products for multi-point shunt calibration

 #14
20220107366
2022-04-07

Optical monitoring to detect contamination of power grid components

 #15
20220034972
2022-02-03

Test equipment and test method of battery management system

 #16
20220003828
2022-01-06

Smart current transformer system

 #17
20210123964
2021-04-29

Optical monitoring to detect contamination of power grid components

 #18
20210109157
2021-04-15

Multiple merging unit testing system

 #19
20200386842
2020-12-10

System and method for integrated test on primary-secondary pole-mounted breaker

 #20
20200355777
2020-11-12

Test system

 #21
20200342749
2020-10-29

Methods, apparatuses, systems, and computer program products for multi-point shunt calibration

 #22
20200241066
2020-07-30

Intelligent on-line diagnosis and positioning method for winding deformation of power transformers

 #23
20200217881
2020-07-09

Polyphase inductive filter

 #24
20200132724
2020-04-30

Probe pin alignment apparatus

 #25
20190237249
2019-08-01

Wide range capacitor standard box

 #26
20190234998
2019-08-01

High precision decade capacitance standard box

 #27
20190079117
2019-03-14

Current measurement

 #28
20180309292
2018-10-25

Variable loop gain using excessive regeneration for a delayed wide-area control system

 #29
20180224491
2018-08-09

System and method for tuning transformers

 #30
20180149682
2018-05-31

Method and testing device for testing wiring of transformers

 #31
20180062373
2018-03-01

Arc detection in electric meter systems

 #32
20170215274
2017-07-27

Impedance compensation structure for broadband near-field magnetic-field probe and its construction method

 #33
20170184637
2017-06-29

Methods and systems for accuracy improvement in current comparators

 #34
20170108572
2017-04-20

Voltage pattern analysis system and method

 #35
20170016973
2017-01-19

System for correcting error

 #36
20160209446
2016-07-21

CURRENT TRANSFORMER SYSTEM WITH CHARACTERIZATION

 #37
20160124024
2016-05-05

Self-correcting current transformer system

 #38
20150333653
2015-11-19

Deviation compensation method of potential transformer

 #39
20150333643
2015-11-19

High voltage direct current (HVDC) transmission system to compensate for voltage values output from a plurality of potential transformers

 #40
20150293157
2015-10-15

Systems and methods for reducing attenuation in current transducers

 #41
20150233997
2015-08-20

Transformer evaluation

 #42
20150008899
2015-01-08

Methods and systems for accuracy improvement in current comparators

 #43
20140288885
2014-09-25

SIGNAL PROCESSING DEVICE, PULSE WAVE MEASURING APPARATUS, AND SIGNAL PROCESSING METHOD

 #44
20140021971
2014-01-23

Built-in test injection for current sensing circuit

 #45
20130282312
2013-10-24

Method and apparatus for transformer diagnosis

 #46
20130043894
2013-02-21

METHOD AND ARRANGEMENT FOR DETERMINING IMPEDANCE VALUES

 #47
20120319675
2012-12-20

Calibration of non-contact voltage sensors

 #48
20120319674
2012-12-20

Calibration of non-contact current sensors

 #49
20120139555
2012-06-07

Instrument transformer test equipment and method

 #50
20110210715
2011-09-01

Error Compensating Method for Instrument Transformer

 #51
20110148431
2011-06-23

Property monitoring apparatus for current transformer or electric transformer

 #52
20100315092
2010-12-16

Fault prediction in electronic transmission networks

 #53
20100066097
2010-03-18

Method to estimate the output current of an automotive generator (alternator)

 #54
20090153145
2009-06-18

Method and Device for Checking Current Converters by Means of High-Current Pulses

 #55
20090063081
2009-03-05

BRIDGE SENSOR CALIBRATION

 #56
20080312856
2008-12-18

Self-calibrating voltage sensor

 #57
20070216434
2007-09-20

Method for validating and monitoring automatic test equipment contactor

 #58
20070186131
2007-08-09

Low cost imbedded load board diagnostic test fixture

 #59
20070108995
2007-05-17

Current transformer test device and method

 #60
20070021937
2007-01-25

Apparatus and method for compensating secondary currents used in differential protection to correct for a phase shift introduced between high voltage and low voltage transformer windings

 #61
20050288877
2005-12-29

Method and apparatus for instrument transformer reclassification

 #62
20050212506
2005-09-29

Testing of current transformers