IEC 60947-9-2:2021 

Low-voltage switchgear and controlgear - Part 9-2: Active arc-fault mitigation systems - Optical-based internal arc-detection and mitigation devices


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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.

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Additional information

Publication typeInternational Standard
Publication date2021-04-26
Available language(s)English/French
TC/SCTC 121/SC 121A - Low-voltage switchgear and controlgearrss
ICS29.120.40 - Switches
29.130.20 - Low voltage switchgear and controlgear
Stability date  2023
File size6691 KB

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