CPC Subgroup
H02H 3/16 responsive to fault current to earth, frame or mass (with balanced or differential arrangement H02H3/26 )
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 ) > responsive to fault current to earth, frame or mass (with balanced or differential arrangement H02H3/26 )
3 direct subcodes
Child Classifications
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- H02H 3/17 by means of an auxiliary voltage injected into the installation to be protected