Guide for procurement of power station equipment - Part 2-7: Electrical equipment; Switchgear and controlgear; German version EN 45510-2-7:2002— 35 стр.
Safety of transformers, reactors, power supply units and combinations thereof - Part 2-23: Particular requirements and tests for transformers and power supply units for construction sites (IEC 61558-2-23:2010) (english version)