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
• H02H 7/003
• H02H 7/005
• H02H 7/006
• H02H 7/008
• H02H 7/04 for transformers
• H02H 7/06 for dynamo-electric generators; for synchronous capacitors
• H02H 7/08 for dynamo-electric motors
• H02H 7/10 for converters; for rectifiers
• H02H 7/16 for capacitors (for synchronous capacitors H02H7/06)
• H02H 7/18 for batteries; for accumulators
• 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)
• H02H 7/22 for distribution gear, e.g. bus-bar systems; for switching devices
• H02H 7/24 for spark-gap arresters
• 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)