Jõutrafod. Osa 1, Üldist = Power transformers. Part 1, General (IEC 60076-1:2011)
2012
https://www.ester.ee/record=b2896170*est
Mõõtetrafod. Osa 3, Lisanõuded induktiivpingetrafodele = Instrument transformers. Part 3, Additional requirements for inductive voltage transformers (IEC 61869-3:2011)
2012
https://www.ester.ee/record=b2896163*est