H02H 3/02 Details
Introduced: September 1968
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 > Details
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 ) > Details
Of 7 combined children, 5 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 3/027 with automatic disconnection after a predetermined time (H02H3/033, H02H3/06 take precedence ) since 1980 IPC+CPC Available in IPC and CPC
- H02H 3/033 with several disconnections in a preferential order, (H02H3/06 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
- H02H 3/04 with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned +4 CPC IPC+CPC Available in IPC and CPC
- H02H 3/05 with means for increasing reliability, e.g. redundancy arrangements since 1980 IPC+CPC Available in IPC and CPC