EN IEC 60947-9-1:2019
Current
The latest, up-to-date edition.
Low-voltage switchgear and controlgear - Part 9-1: Active arc-fault mitigation systems - Arc quenching devices
24-05-2019
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 IEC61439 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 1000VAC or 1500VDC.
| Committee |
CLC/TC 121A
|
| DocumentType |
Standard
|
| ProductNote |
This standard is also refers to EN 55011:2016 ,EN 60947-1:2007
|
| PublisherName |
European Committee for Standards - Electrical
|
| Status |
Current
|
| Standards | Relationship |
| IEC 60947-9-1:2019 | Identical |
| DIN EN IEC 60947-9-1:2019-11 | Identical |
| BS EN IEC 60947-9-1:2019 | Identical |
| CEI EN IEC 60947-9-1:2019 | Identical |
| NEN-EN-IEC 60947-9-1:2019 | Identical |
| I.S. EN IEC 60947-9-1:2019 | Identical |
| VDE 0660-120:2019-11 | Identical |
| UNE-EN IEC 60947-9-1:2021 | Identical |