Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions

Child Classifications

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• H02H 7/001 CPC only CPC only
• H02H 7/003 CPC only CPC only
• H02H 7/005 CPC only CPC only
• H02H 7/006 CPC only CPC only
• H02H 7/008 CPC only CPC only
• H02H 7/04 for transformers +1 CPC IPC+CPC Available in IPC and CPC
• H02H 7/06 for dynamo-electric generators; for synchronous capacitors +3 CPC IPC+CPC Available in IPC and CPC
• H02H 7/08 for dynamo-electric motors +6 CPC IPC+CPC Available in IPC and CPC
• H02H 7/10 for converters; for rectifiers +2 CPC IPC+CPC Available in IPC and CPC
• H02H 7/16 for capacitors (for synchronous capacitors H02H7/06) IPC+CPC Available in IPC and CPC
• H02H 7/18 for batteries; for accumulators IPC+CPC Available in IPC and CPC
• H02H 7/20 for electronic equipment (for converters H02H7/10; for electric measuring instruments G01R1/36; for DC voltage or current semiconductor regulators G05F1/569; for amplifiers H03F1/52; for electronic switching circuits H03K17/08) +1 CPC IPC+CPC Available in IPC and CPC
• H02H 7/22 for distribution gear, e.g. bus-bar systems; for switching devices +3 CPC IPC+CPC Available in IPC and CPC
• H02H 7/24 for spark-gap arresters IPC+CPC Available in IPC and CPC
• H02H 7/26 Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured (locating faults in cables G01R31/08) +5 CPC IPC+CPC Available in IPC and CPC