NF C52-558-2-2*NF EN 61558-2-2:2007 Safety of power transformers, power supplies, reactors and similar products - Part 2-2 : particular requirements and tests for control transformers and power supplies incorporating control transformers
2007NF C52-558-2-2*NF EN 61558-2-2:2007 Safety of power transformers, power supplies, reactors and similar products - Part 2-2 : particular requirements and tests for control transformers and power supplies incorporating control transformers