H01F27/422 - CPC Classification Index

ClassID:

201727 ⎘

H01F27/422 - 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

Sub-classes:

H01F27/425 » {for voltage transformers} 50
H01F27/427 » {for current transformers} 39

Recent Application in this class:

20220262562

2022-08-18

Transformer monitor

20220148800

2022-05-12

Distribution transformer monitor

20220052453

2022-02-17

Wideband RF choke

20190096573

2019-03-28

METHOD FOR FLUX RESTORATION FOR UNINTERRUPTIBLE POWER SUPPLY STARTUP

20110210715

2011-09-01

Error Compensating Method for Instrument Transformer

20090015234

2009-01-15

Power supply arrangement having a boost circuit for an electricity meter

20080117014

2008-05-22

Nanocrystalline core for a current sensor, single and double-stage energy meters and current probes containing them

16147092

2020-02-25

Wireless transceiver with reconfigurable transformers