Communication networks and systems for power utility automation. Basic information and communication structure. Use of logical nodes for modeling application functions and related concepts and guidelines for substations— 86 стр.
Instrument transformers -- Part 14: Additional requirements for current transformers for DC applications ((IEC 61869-14:2018) EN IEC 61869-14:2019) (english version)
Instrument transformers -- Part 15: Additional requirements for voltage transformers for DC applications ((IEC 61869-15:2018) EN IEC 61869-15:2019) (english version)