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IEC 61558-2-2:2022 RLV
IEC 61558-2-2 Extended version
IEC 61558-2-2:2022 EXV
Safety of transformers, reactors, power supply units and combinations thereof - Part 2-2: Particular requirements and tests for control transformers and power supply units incorporating control transformers
IEC 61558-2-2:2022 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user with a comprehensive content of the Standard. IEC 61558-2-2:2022 EXV includes the content of the references made to IEC 61558-1:2017.
IEC 61558-2-2:2022 deals with the safety of control transformers and power supply units incorporating control transformers. Transformers incorporating electronic circuits are also covered by this document. This third edition cancels and replaces the second edition published in 2007. 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;
- new general symbol for control transformers;
- 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.
IEC 61558-2-2:2022 deals with the safety of control transformers and power supply units incorporating control transformers. Transformers incorporating electronic circuits are also covered by this document. This third edition cancels and replaces the second edition published in 2007. 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;
- new general symbol for control transformers;
- 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.
CHF 638.-
Redline version
All the changes between the new edition and previous edition of the publication are highlighted with track changes mode.
DiscoverTechnical committee
TC 96 Transformers, reactors, power supply units, and combinations thereofCategory
Safety - Group Safety| Publication type | International Standard |
| Publication date | 2022-10-19 |
| Edition | 3.0 |
| ICS | 29.180 |
| Stability date | 2025 |
| ISBN number | 9782832259320 |
| Pages | 210 |
| File size | 3.51 MB |
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