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IPC Subgroup
H02H 3/33

using summation current transformers

Introduced: January 1980

Last revised: January 2006

Full Title

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 difference between voltages or between currents; responsive to phase angle between voltages or between currents > involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors > using summation current transformers

Classification Context

Section:
ELECTRICITY
Class:
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
Subclass:
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS