ClassID:

201729

H01F27/427 - CPC Classification

Classification description:

Details of transformers or inductances, in general; Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils for instrument transformers for current transformers

Recent Application in this class:
#1
20260135029
2026-05-14

CIRCUIT BREAKER DEVICE WITH CURRENT SENSE TRANSFORMERS HAVING PRIMARY WINDING TURNS IN OPPOSING DIRECTIONS

#2
20260031270
2026-01-29

MAGNETIC COMPONENT

#3
20250046514
2025-02-06

ACTIVE CURRENT COMPENSATION DEVICE CAPABLE OF DETECTING MALFUNCTION

#4
20250022651
2025-01-16

ROGOWSKI COIL BASED BUSHING CURRENT TRANSFORMER

#5
20240312702
2024-09-19

CIRCUIT BREAKER DEVICE WITH PRIMARY WINDING TURNS IN OPPOSING DIRECTIONS

#6
20240283347
2024-08-22

ENERGY MANAGEMENT SYSTEM

#7
20240222003
2024-07-04

CURRENT TRANSFORMER ASSEMBLIES

#8
20240203641
2024-06-20

Active current compensation device capable of detecting malfunction

#9
20230350440
2023-11-02

Device and method for harvesting energy from a power line magnetic field

#10
20220246350
2022-08-04

Current Transformer with Optic Fiber Mode Electronic Circuit

#11
20220208443
2022-06-30

Active current compensation device capable of detecting malfunction

#12
20220165490
2022-05-26

Bus bar for minimizing AC loss in transformer and method of designing the same

#13
20220044869
2022-02-10

Current transformer of air circuit breaker

#14
20220037886
2022-02-03

Device and method for harvesting energy from a power line magnetic field

#15
20220003828
2022-01-06

Smart current transformer system

#16
20210391791
2021-12-16

Power supply system, control device, and method for measuring reactor current

#17
20210166867
2021-06-03

Current dependent inductivity

#18
20210065971
2021-03-04

Openable current transformer comprising a flexible magnetic core

#19
20210018538
2021-01-21

High-fidelity voltage measurement using a capacitance-coupled voltage transformer

#20
20200243256
2020-07-30

Transformer arrangement, circuit arrangement and method for operating a transformer arrangement

#21
20200161045
2020-05-21

Single input circuit for receiving output from a di/dt sensor or current transformer and circuit breaker including same

#22
20200116762
2020-04-16

Current sensing device

#23
20200052488
2020-02-13

Device and method for harvesting energy from a power line magnetic field

#24
20190356218
2019-11-21

Detection device, control device, and inverter device

#25
20190195918
2019-06-27

High-fidelity voltage measurement using a capacitance-coupled voltage transformer

#26
20190156998
2019-05-23

Current transformer module and power supply device including the same

#27
20190092172
2019-03-28

Collected current monitoring device

#28
20190068045
2019-02-28

System and method for rapid current sensing and transistor timing control

#29
20180095112
2018-04-05

Current-measuring device and method for determining an electric current

#30
20170047734
2017-02-16

Docking module for a current transformer for preventing overvoltages and a current transformer having a docking module

#31
20170016973
2017-01-19

System for correcting error

#32
20160005534
2016-01-07

Current transformer system with sensor CT and generator CT separately arranged in parallel in electric power line, and integrated system for controlling same in wireless communications network

#33
20150035592
2015-02-05

Correction of the passband of an air gap transformer

#34
20150016006
2015-01-15

Method and apparatus for demagnetizing transformer cores in closed loop magnetic current sensors

#35
20130127581
2013-05-23

Current transformer

#36
20120268100
2012-10-25

Error compensation for current transformer sensors

#37
20110291488
2011-12-01

System for self-powered, wireless monitoring of electrical current, power and energy

#38
20090237066
2009-09-24

CURRENT TRANSFORMER WITH IMPEDANCE COMPENSATION AND ASSOCIATED METHOD

#39
20070126411
2007-06-07

Current transformer with impedance compensation and associated methods

#40
20050141159
2005-06-30

Device for supplying an electronic protection device to be used in a low-voltage circuit breaker

#41
20050001706
2005-01-06

Low power consuming current measurements for high currents

#42
16003360
2019-05-21

Dynamic impedance system for an increased range of operation of an instrument transformer

#43
15595508
2018-08-14

Systems and methods for self-adaptive current control

#44
14953331
2016-06-14

Plural commutated-element direct-current current transformer