IEC 61558-2-20:2022 Safety of transformers, reactors, power supply units and combinations thereof - Part 2-20: Particular requirements and tests for small reactors
2010IEC 61558-2-20:2010 Safety of transformers, reactors, power supply units and combinations thereof - Part 2-20: Particular requirements and tests for small reactors
2000IEC 61558-2-20:2000 Safety of power transformers, power supply units and similar devices - Part 2-20: Particular requirements for small reactors