IEC 60947-6-1:2021

IEC 60947-6-1:2021

IEC 60947-6-1:2021 Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment - Transfer switching equipment

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Details

IEC 60947-6-1:2021 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.

Additional Info

Author International Electrotechnical Commission (IEC)
Committee TC 121/SC 121A
Published by IEC
Document type Standard
Edition 3.0
ICS 29.120.40 : Switches
29.130.20 : Low voltage switchgear and controlgear
Number of pages 121
Replace IEC 60947-6-1:2005,IEC 60947-6-1:2005/AMD1:2013,IEC 60947-6-1:2005+AMD1:2013 Edition 2.1
Document history IEC 60947-6-1:2005,IEC 60947-6-1:2005/AMD1:2013,IEC 60947-6-1:2005+AMD1:2013 Edition 2.1
Keyword IEC60947-6-1,IEC 60947-6-1:2021,IEC 60947-6-1,TC 121/SC 121A