Full Description

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. 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.

This document does not cover:
sensors intended to detect arc-faults;
devices intended to trigger the functioning of the arc quenching device;
devices intended to interrupt arc-fault current;
special requirements for AQDs for use in explosive atmospheres (e.g. ATEX).

Cross References:
IEC 61439 (all parts)
IEC 60417
IEC 61439
EN 61439
CISPR 11:2015/AMD1:2016
IEC 60947-1:2007
EN 55011:2016
IEC 60068-2-30:2005
IEC 60947-1:2007/AMD2:2014
EN 60947-1:2007/A1:2011
EN 60068-2-30:2005
EN 60947-1:2007/A2:2014
IEC 60947-1:2007/AMD1:2010
CISPR 11:2015
EN 60947-1:2007
EN 55011:2016/A1:2017
IEC 60947-9-2
IEC TS 63107
IEC TR 61641:2014


All current amendments available at time of purchase are included with the purchase of this document.

Product Details

Published: 06/14/2019 ISBN(s): 9780580966231 Number of Pages: 26 File Size: 1 file , 1.1 MB Product Code(s): 30352526, 30352526, 30352526 Note: This product is unavailable in United Kingdom