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Normas BSI – AENOR
BS EN IEC 60947-9-1:2019

BS EN IEC 60947-9-1:2019

Low-voltage switchgear and controlgear. Active arc-fault mitigation systems. Arc quenching devices

2019-06-14 /Definitive
Equivalencias internacionales:

EN 60947-9-1 Ed.1.0

IEC 60947-9-1:2019

IEC 60947-9-1:2019 covers low-voltage arc quenching devices, hereinafter referred to as AQDs, which are intended to eliminate arc-faults in low-voltage assemblies (typically low-voltage 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. 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 1 000 V AC or 1 500 V DC.


Electrical equipment, Copper, Low voltage, Electric control equipment, Electric conductors, Switchgear, Terminal blocks, Electrical connections, Low-voltage equipment
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