DIN IEC/TS 62257-1:2014 农村电气化用小型可再生能源和混合系统的建议. 第1部分: IEC 62257系列和农村电气化概况 (IEC/TS 62257-1-2013)
Recommendations for small renewable energy and hybrid systems for rural electrification - Part 1: General introduction to IEC 62257 series and rural electrification (IEC/TS 62257-1:2013)