UNE-EN 61558-2-20:2012 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1100 V -- Part 2-20: Particular requirements and tests for small reactors
2012UNE-EN 61558-2-20:2012 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1100 V -- Part 2-20: Particular requirements and tests for small reactors