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IEC

WG 19 - TC 121/SC 121A/WG 19

TC 121/SC 121A/WG 19

General Information

Status
Active
Work Field
Information technology
Parent
SC 121A - Low-voltage switchgear and controlgear
Standardization Organization
ICS
Directive
Mandate
50
IEC
IEC 60947-9-2:2021(Main)
Low-voltage switchgear and controlgear - Part 9-2: Active arc-fault mitigation systems - Optical-based internal arc-detection and mitigation devices

IEC 60947-9-2:2021 covers internal arc-fault control devices, hereinafter referred to as IACD, which are intended to:
– detect internal arc-faults in low-voltage switchgear and controlgear assemblies, by processing (at a minimum) the optical effect of an internal arc-fault, and
– operate mitigation device (either external or combined) in order to minimize the effects of the internal arc-fault.

  • Standard
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50