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IEC 60947-9-1-ed.1.0
Low-voltage switchgear and controlgear - Part 9-1: Active arc-fault mitigation systems - Arc quenching devices
Translate name
STANDARD published on 16.1.2019
The information about the standard:
Designation standards: IEC 60947-9-1-ed.1.0
Publication date standards: 16.1.2019
SKU: NS-935957
The number of pages: 37
Approximate weight : 111 g (0.24 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 60947-9-1-ed.1.0 :
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. LIEC 60947-9-1:2019 couvre les dispositifs d’extinction d’arc a basse tension, ci-apres appeles «AQD» (arc quenching devices). Ces appareils sont destines a eliminer les defauts d’arc dans les ensembles a basse tension (en regle generale, des ensembles dappareillage a basse tension conformes a la serie IEC 61439) en creant un chemin de courant a impedance plus faible pour provoquer le transfert du courant d’arc vers ce nouveau chemin de courant. Ce nouveau chemin de courant est maintenu jusqu’a la coupure du courant de court-circuit par le DPCC. Les AQD sont installes dans les ensembles a basse tension, raccordes au circuit principal, de preference le plus pres possible de toutes les sources primaires d’alimentation. Leur tension assignee ne depasse pas 1 000 V en courant alternatif ou 1 500 V en courant continu.
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