CPC Subgroup
H02H 3/02 Details
Full Title
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
7 direct subcodes
Child Classifications
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- H02H 3/027 with automatic disconnection after a predetermined time (H02H3/033, H02H3/06 take precedence )
- H02H 3/033 with several disconnections in a preferential order, (H02H3/06 takes precedence)
- H02H 3/04 with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H 3/05 with means for increasing reliability, e.g. redundancy arrangements
- H02H 3/06 with automatic reconnection