H02H9/007 - CPC Classification Index

ClassID:

216851 ⎘

H02H9/007 - CPC Classification

Classification description:

Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions avoiding or damping oscillations, e.g. fenoresonance or travelling waves

Recent Application in this class:

20250174983

2025-05-29

ELECTRICAL DAMPING DEVICE FOR A DC VOLTAGE BUS

20200341035

2020-10-29

Capacitance-coupled voltage transformer monitoring

20200287379

2020-09-10

Method and device for quickly eliminating ferromagnetic resonance of voltage transformer

20170331289

2017-11-16

Parameter tuning approach for bypass damping filter to suppress subsynchronous resonance in power systems

20140268944

2014-09-18

Surge blocking inductor

20140063673

2014-03-06

Protective device for LC filter

20130166493

2013-06-27

Method and system for online ferroresonance detection

20110299210

2011-12-08

Serially connected surge suppression optimization device

20110062797

2011-03-17

PROTECTION SYSTEM FOR VOLTAGE TRANSFORMERS

#10

20070103823

2007-05-10

Protection system for medium-voltage potential transformers

#11

18201919

2023-11-21

PT ferromagnetic resonance elimination method implemented by actively inputting resistance through electronic load

#12

15972799

2020-09-22

Damped PI-type filter Y-type capacitance network for radiated and conducted emission