8IEC 60044-8:2002 (E), Instrument Transformers - Part 8: Electronic Current Transformers[S].
9IEC 61850-9-1 : 2003 (E), Communication Networks and Systems in Substations-Part 9-1 : Specific Communication Service Mapping (SCSM) - Sampled Values Over Serial Unidirectional Multidrop Point to Point Link[S].
10IEC 61850-9-2 : 2004 (E), Communication Networks and Systems in Substations-Part 9-2. Specific Communication Service Mapping (SCSM) -Sampled Values Over ISO/IEC 8802-3[S].
