Rate sensing instantaneous trip mode network

Details Rate sensing instantaneous trip mode network Rate sensing instantaneous trip mode network

H - Electricity

02

H

348/26

H02H 3/08 (2006.01) H02H 3/093 (2006.01) H02H 3/44 (2006.01)

Patent

CA 1138984

41PR-3250 RATE SENSING INSTANTANEOUS TRIP MODE NETWORK ABSTRACT Air core current transformers respectively linked with the phase conductors of a power distribution circuit develop secondary voltage signals proportional to the rates of change of the phase currents. A full-wave rectifying network provides a rectified output voltage signal corresponding to the highest magnitude secondary voltage signal. A comparator issues a circuit breaker trip initiating signal when the output voltage signal achieves a pre-selected threshold voltage.

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