IPC Main Group
H02H 7/00 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
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
- Subclass:
- EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
Related Keywords
emergency protection of circuits for DYNAMO-ELECTRIC machines
10 direct subcodes
Child Classifications
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- H02H 7/04 for transformers
- H02H 7/06 for dynamo-electric generators; for synchronous capacitors
- H02H 7/08 for dynamo-electric motors
- H02H 7/1 for converters; for rectifiers
- H02H 7/16 for capacitors
- H02H 7/18 for batteries; for accumulators
- H02H 7/2 for electronic equipment
- 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 occurred