DIN EN 61558-2-14-2013 变压器、电抗器、电源装置及其组合的安全性.第2-14部分:调压变压器和包含调压变压器的供电机组的试验和详细要求(IEC 61558-2-14-2012).德文版本EN 61558-2-14-2013
Safety of transformers, reactors, power supply units and combination thereof - Part 2-14: Particular requirements and tests for variable transformers and power supply units incorporating variable transformers (IEC 61558-2-14:2012); German version EN 61558