SRPS EN IEC 61558-2-12:2025

Safety of transformers, reactors, power supply units and combination thereof - Part 2-12: Particular requirements and tests for constant voltage transformers and power supply units for constant voltage

Scope

<!-- NEW! -->IEC 61558-2-12:2024 is available as <a href="https://webstore.iec.ch/publication/93974">IEC 61558-2-12:2024 RLV</a> which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.</br></br>IEC 61558-2-12:2024 deals with the safety of constant voltage transformers for general applications and power supply units for constant voltage for general applications. Constant voltage transformers incorporating electronic circuits are also covered by this document.

This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision.

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

a) adjustment of structure and references in accordance with IEC 61558-1:2017;

b) description of constructions moved to IEC 61558-1:2017;

c) new symbol for power supply unit with linearly regulated output voltage.

It has the status of a group safety publication in accordance with IEC Guide 104.

Related directives

NOTE: If the word "harmonized" (marked in green) is not found in the field with the name of the directive, it means that the European standard is not cited in the OJEU.