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60.60 Standard published May 24, 2019
CENELEC
CLC/TC 121A Low-voltage switchgear and controlgear
European Norm
29.120.40 Switches | 29.130.20 Low voltage switchgear and controlgear
Published
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.
<span style="font-family:"Arial","sans-serif"; font-size:10.0pt">Their rated voltage does not exceed 1 000 V AC or 1 500 V DC.</span>
Legislation related to this standard
Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
Harmonized/SupportingDirective 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
Harmonized/Supporting
PUBLISHED
EN IEC 60947-9-1:2019
60.60
Standard published
May 24, 2019