1. Home
  3. Standards development
  5. Technical committees and subcommittees
  7. TC 121
  9. SC 121A Dashboard

SC 121A

Low-voltage switchgear and controlgear
 

Detail

Committee
Working Groups
Project Leader

Current

Status

Frcst Pub

Date

Stability

Date

SC 121AWG 19Mr François CAZALSCFDIS2021-052023

History

Stage
Document
Downloads
Decision Date
Target Date
prePNW
2017-03-10 
PNW
121A/141/NP PDF file 356 kB
2017-03-10 
PRVN
2017-06-022017-06
ACD
121A/158/RVN Word file 366 kB
PDF file 778 kB
2017-06-162017-11
ACD
121A/158A/RVN Word file 126 kB
PDF file 301 kB
2017-06-162017-11
CD
121A/193/CD
PDF file 901 kB
2017-12-222017-12
PCC
2018-03-162018-03
A2CD
121A/216/CC PDF file 411 kB
Word file 255 kB
2018-03-232018-08
A2CD
121A/216A/CC PDF file 497 kB
Word file 265 kB
2018-03-232018-08
2CD
121A/279/CD
PDF file 1303 kB
2019-02-082018-12
PCC
2019-05-032019-05
ACDV
121A/305/CC PDF file 318 kB
Word file 118 kB
2019-06-072019-09
ACDV
121A/305A/CC PDF file 388 kB
Word file 157 kB
2019-06-072019-09
TCDV
2020-01-062020-02
CCDV
121A/338/CDV
PDF file 1070 kB
2020-02-282020-02
CCDV
121A/338(F)/CDV PDF file 1052 kB
2020-02-282020-02
PRVC
2020-05-222020-05
AFDIS
121A/366/RVC PDF file 470 kB
Word file 336 kB
2020-05-292020-10
AFDIS
121A/366A/RVC PDF file 660 kB
Word file 360 kB
2020-05-292020-10
DECFDIS
2020-12-012020-11
RFDIS
2020-12-022020-12
CFDIS
121A/406/FDIS PDF file 3203 kB
2021-01-152021-02
PRVD
 2021-02

Abstract

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.

Project

IEC 60947-9-2 ED1

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