responsive to the appearance of abnormal wave forms, e.g. AC in DC installations

Introduced: January 1980

Full Title

Full 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 > responsive to the appearance of abnormal wave forms, e.g. AC in DC installations

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 ) > responsive to the appearance of abnormal wave forms, e.g. AC in DC installations

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 1980.

Child Classifications

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H02H 3/52 responsive to the appearance of harmonics since 1980 IPC+CPC Available in IPC and CPC