标准号:DIN EN 61558-2-4-2009 有效
英文名称:Safety of transformers,reactors, power supply units and similar products for supply voltages up to 1100 v - Part 2-4: Particular requirements and test for isolating transformers and power supply units incorporating isolating transformers (IEC 61558-2-4:2009); German version EN 61558-2-4:2009
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