In the international standard classification, IEC+61133+1992 involves: Railway rolling stock.
International Electrotechnical Commission (IEC), IEC+61133+1992
IEC 61133:1992 Electric traction; rolling stock; test methods for electric and thermal/electric rolling stock on completion of construction and before entry into service
VDE 0389-2-1994 Einteilung von Isolierfluessigkeiten nach dem Brennpunkt und dem spezifischen Heizwert Hu (IEC 61100:1992); Deutsche Fassung EN 61100:1992
NL-NEN, IEC+61133+1992
NEN 10387-1993 Symbols for alternating-current electricity meters (IEC 387:1992)