SC 121A

Low-voltage switchgear and controlgear

 

Detail

Committee
Working Groups
Project Leader

Current

Status

Frcst Pub

Date

Stability

Date

SC 121AMT 18Mr Neil A CzarneckiPRVD2021-032022

History

Stage
Document
Downloads
Decision Date
Target Date
ACD
121A/192/RR PDF file 26 kB
2017-12-21 
CD
121A/194/CD
PDF file 607 kB
2017-12-222018-01
PCC
2018-03-162018-03
A2CD
121A/217/CC PDF file 347 kB
Word file 192 kB
2018-03-232018-08
A2CD
121A/217A/CC PDF file 477 kB
Word file 396 kB
2018-03-232018-08
A2CD
121A/217B/CC PDF file 514 kB
Word file 407 kB
2018-03-232018-08
2CD
121A/232/CD
PDF file 450 kB
2018-06-222018-06
PCC
2018-09-142018-09
ACDV
121A/244/CC PDF file 265 kB
Word file 200 kB
2018-09-212019-03
A3CD
121A/244A/CC PDF file 544 kB
Word file 438 kB
2019-06-072019-06
3CD
121A/308/CD
PDF file 509 kB
2019-06-142019-06
PCC
2019-09-062019-09
ACDV
121A/323/CC PDF file 1381 kB
Word file 737 kB
2019-09-132019-12
ACDV
121A/323A/CC PDF file 729 kB
Word file 775 kB
2019-09-132019-12
TCDV
2019-12-192020-02
CCDV
121A/334/CDV
PDF file 553 kB
2020-02-072020-02
CCDV
121A/334(F)/CDV PDF file 573 kB
2020-02-072020-02
PRVC
2020-05-012020-05
AFDIS
121A/361/RVC PDF file 224 kB
Word file 75 kB
2020-05-152020-09
AFDIS
121A/361A/RVC PDF file 309 kB
Word file 75 kB
2020-05-152020-09
DECFDIS
2020-10-202020-10
RFDIS
2020-10-212020-11
CFDIS
121A/403/FDIS
2020-12-082021-01
PRVD
2021-01-152021-01
 2021-01

Abstract

IEC 60947-6-1:2020 applies to transfer switching equipment (TSE), to be used in power systems for ensuring the continuity of the supply and allowing the energy management of the installation, by transferring a load between power supply sources, the rated voltage of which does not exceed 1 000 V AC or 1 500 V DC.

This third edition cancels and replaces the second edition published in 2005, and its Amendment 1:2013. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous edition:

– clarification of scope and object;

– clarification of terms and definitions;

– removal of unnecessary definitions;

– modification of characteristics;

– modification of utilization categories definitions;

– introduction of new markings requirements;

– addition of new requirements for clearances and creepage distances;

– addition of new requirements and tests for mechanical and electrical interlocks;

– clarification of transfer sequences;

– modification of requirements for rated short-time withstand currents;

– modification of new requirements for electromagnetic compatibility;

– clarification of performance requirements for CB type TSE, in alignment with requirements stated in IEC 60947-2;

– addition of new test sequence V: Critical load current performance of equipment with DC ratings.


Project

IEC 60947-6-1 ED3

Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment - Transfer switching equipment