IEC 60947-6-1:2005

States the characteristics of the equipment, the conditions with which the equipment must comply (operation in case of normal and abnormal conditions, dielectric properties). Also gives tests intended to confirm that these conditions have been met and the data to be marked on the equipment and provided by the manufacturer.

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.