UNE-EN IEC 60947-9-1:2021
Current
The latest, up-to-date edition.
Low-voltage switchgear and controlgear - Part 9-1: Active arc-fault mitigation systems - Arc quenching devices
Hardcopy , PDF
Spanish, Castilian, English
10-02-2021
This document covers low-voltage arc quenching devices, hereinafter referred to as AQD, which are intended to eliminate arcing faults in low-voltage assemblies (typically low voltage switchgear and controlgear assemblies according to 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, in derivation from the main distribution path, 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 arcing fault;
devices intended to trigger the functioning of the arc quenching device;
devices intended to interrupt arcing fault currents;
special requirements for AQD for use in explosive atmospheres (e.g. ATEX).
| Committee |
CTN 201/SC 121AB
|
| DocumentType |
Standard
|
| Pages |
27
|
| PublisherName |
Asociación Española de Normalización
|
| Status |
Current
|
| Standards | Relationship |
| IEC 60947-9-1:2019 | Identical |
| EN IEC 60947-9-1:2019 | Identical |
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