IEC 61558-2-4:2021
Safety of transformers, reactors, power supply units and combinations thereof - Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers for general applications
Sécurité des transformateurs, bobines d'inductance, blocs d'alimentation et combinaisons de ces éléments - Partie 2-4: Exigences particulières et essais pour les transformateurs de séparation des circuits et les blocs d'alimentation incorporant des transformateurs de séparation des circuits pour applications générales
| Standard number: | IEC 61558-2-4:2021 |
| Released: | 2021-05-18 |
| Language: | English/French - Bilingual |
IEC 61558-2-4:2021
IEC 61558-2-4:2021 deals with the safety of isolating transformers for general applications and power supply units incorporating isolating transformers for general applications. Transformers incorporating electronic circuits are also covered by this document. This third edition cancels and replaces the second edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - adjustment of structure and references in accordance with IEC 61558-1:2017; - description of constructions moved to IEC 61558-1:2017; - a 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. This International Standard is to be used in conjunction with IEC 61558-1:2017.