H02H 3/00 Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection (specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems H02H7/00; systems for change-over to standby supply H02J9/00 )
Introduced: September 1968
Title
Titles differ between systems:
IPC: Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
CPC: Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection (specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems H02H7/00; systems for change-over to standby supply H02J9/00 )
Full Title
Full titles differ between systems:
Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection (specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems H02H7/00; systems for change-over to standby supply H02J9/00 )
Of 18 combined children, 16 exist in both systems.
2 codes are CPC-only extensions.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- H02H 3/08 responsive to excess current (responsive to abnormal temperature caused by excess current H02H5/04) +3 CPC IPC+CPC Available in IPC and CPC
- H02H 3/14 responsive to occurrence of voltage on parts normally at earth potential IPC+CPC Available in IPC and CPC
- H02H 3/16 responsive to fault current to earth, frame or mass (with balanced or differential arrangement H02H3/26 ) +2 CPC IPC+CPC Available in IPC and CPC
- H02H 3/26 responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents +1 CPC IPC+CPC Available in IPC and CPC
- H02H 3/38 responsive to both voltage and current; responsive to phase angle between voltage and current +3 CPC IPC+CPC Available in IPC and CPC
- H02H 3/44 responsive to the rate of change of electrical quantities since 1980 +1 CPC IPC+CPC Available in IPC and CPC
- H02H 3/50 responsive to the appearance of abnormal wave forms, e.g. AC in DC installations since 1980 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class H02,2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 54,496
- MITSUBISHI ELECTRIC CORPORATION JP 10,495
- TOYOTA MOTOR CORPORATION 9,464
- GUANGDONG POWER GRID CORPORATION 9,339
- ROBERT BOSCH DE 8,226
- SIEMENS DE 8,218
- DENSO CORPORATION 7,063
- MITSUBISHI ELECTRIC CORPORATION 6,619
- SAMSUNG ELECTRONICS COMPANY KR 5,826
- GREE ELECTRIC APPLIANCES 5,094
Top Applicants (CPC)
Class H02,2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 24,515
- MITSUBISHI ELECTRIC CORPORATION JP 11,346
- SIEMENS DE 9,026
- ROBERT BOSCH DE 9,005
- SAMSUNG ELECTRONICS COMPANY KR 6,729
- GUANGDONG POWER GRID CORPORATION 5,740
- DENSO CORPORATION JP 5,077
- LG ELECTRONICS KR 5,041
- LG INNOTEK COMPANY KR 4,442
- TOYOTA MOTOR CORPORATION 4,349