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

IEC 60947-6-1:2026 is available as IEC 60947-6-1:2026 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60947-6-1:2026 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. Specific requirements for bypass/isolation transfer switch equipment are given in Annex C, ATSE having closed transition capability are given in Annex D, stand-alone ATS controllers are given in Annex E, and TSE for electric driven fire pump controllers are given in Annex F.

It covers:

- manually operated transfer switching equipment (MTSE);

- remotely operated transfer switching equipment (RTSE);

- automatic transfer switching equipment (ATSE), including the controller;

- stand-alone ATS controllers;

- bypass/isolation transfer switch equipment (BTSE);

- ATSE having closed transition capability;

- fire pump TSE.

It does not cover:

- TSE configurations that are no