Revidert
IEC 60317-21:1988 ED1
IEC 60317-21:1990 ED2
IEC 60317-21:1990/AMD1:1997 ED2
IEC 60317-21:1990/AMD2:1999 ED2
Publisert
IEC 60317-21:2013+AMD1:2019 CSV
IEC 60317-21:2013 ED3