CEI EN IEC 60947-9-1:2019
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Low-voltage switchgear and controlgear Part 9-1: Active arc-fault mitigation systems - Arc quenching devices
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11-01-2019
This part of IEC 60947 covers low-voltage arc quenching devices, hereinafter referred to as AQDs, which are intended to eliminate arc-faults in low-voltage assemblies (typically lowvoltage switchgear and controlgear assemblies in accordance with the IEC 61439 series), by creating a lower impedance current path, to cause the arcing current to transfer to the new current path.
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