NF C52-558-2-14*NF EN 61558-2-14:2013 Safety of transformers, reactors, power supply units and combinations thereof - Part 2-14 : particular requirements and tests for variable transofrmers and power supply units incorporating variable transformers
2013NF C52-558-2-14*NF EN 61558-2-14:2013 Safety of transformers, reactors, power supply units and combinations thereof - Part 2-14 : particular requirements and tests for variable transofrmers and power supply units incorporating variable transformers