Low-voltage switchgear and controlgear - Active arc-fault mitigation systems. Arc quenching devices
Low-voltage switchgear and controlgear - Active arc-fault mitigation systems. Arc quenching devices
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What is BS EN IEC 60947-9-1 - Arc quenching devices about?
BS EN IEC 60947-9-1 is the first part of an international standard that focuses on low-voltage switchgear and control gear. BS EN IEC 60947-9-1 covers low-voltage arc quenching devices hereinafter referred to as AQDs, which are intended to eliminate arc-faults in low-voltage assemblies, by creating a lower impedance current path, to cause the arcing current to transfer to the new current path. This new current path is maintained until a short-circuit protection device (SCPD) interrupts the short-circuit current. AQDs are installed in low-voltage assemblies, connected to the main circuit, preferably as close as possible to all primary power sources. Their rated voltage does not exceed 1000V AC or 1500V DC.
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