for dynamo-electric motors

Full Title

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 > for dynamo-electric motors

Classification Context

Section:

ELECTRICITY

Class:

GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

Subclass:

EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS

Child Classifications

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• H02H 7/085 against excessive load
• H02H 7/09 against over-voltage; against reduction of voltage; against phase interruption
• H02H 7/093 against increase beyond, or decrease below, a predetermined level of rotational speed
• H02H 7/097 against wrong direction of rotation