Zone arc fault detection

Details Zone arc fault detection Zone arc fault detection

1998-02-19

1999-11-16

Jackson, Stephen W

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 45, 361115, H02H 300

Patent

active

059868600

ABSTRACT:
A number of methods can be used for zone arc protection to detect series and/or shunt arcing faults in various electrical components and/or circuits. A differential current detector, or a di/dt based detector, may be used to detect shunt arcs, while a differential voltage detector or a zero-sequence voltage detector, is used to detect series arcs. A differential phase current detection scheme may be used for both shunt arcs and series arcs. Series arcs may also be detected using a voltage drop system or a line power loss system. Detection of arcing in joints may be monitored directly. A ground fault detector may be combined with one or more of these systems for detecting a ground fault in the circuit to be protected. Two or more of the above systems or detectors may be combined for arc monitoring and detection.

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