DISTRIBUTED ARC FAULT PROTECTION BETWEEN OUTLET AND CIRCUIT BREAKER Russian patent published in 2018 - IPC H01H9/54 H02H3/26 

FIELD: electrical engineering.

SUBSTANCE: disclosed methods and systems employ a nonprobability-based detection scheme that measures conditions (for example, voltage or current) at multiple locations on a circuit, such as a branch circuit, to detect for a presence of an arc fault condition. Centralized processing system, such as controller (120), receives information corresponding to a branch origin voltage or current measurement sensed by a sensor (114, 116) at a branch origin upstream of the plurality of end-use devices (150) on the branch circuit (for example, at a circuit breaker defining the branch), and receives information corresponding to a downstream voltage or current measurement at each of the end-use devices sensed by a corresponding downstream sensor (152, 154). Controller then compares the branch origin voltage or current measurements at the branch origin or current measurements to the downstream voltage at the end-use devices to identify any voltage or current irregularities on the circuit.

EFFECT: technical result is an increase in the reliability of arc fault protection.

12 cl, 8 dwg