DIN EN 60027-4:2008 Letter symbols to be used in electric technology - Part 4: Rotating electric machines (IEC 60027-4:2006); German version EN 60027-4:2007
2008DIN EN 60027-4:2008-03 Letter symbols to be used in electric technology - Part 4: Rotating electric machines (IEC 60027-4:2006); German version EN 60027-4:2007 / Note: DIN 1304-7 (1991-01) remains valid alongside this standard until 2010-10-01.
2008DIN EN 60027-4:2008 Letter symbols to be used in electric technology - Part 4: Rotating electric machines (IEC 60027-4:2006); German version EN 60027-4:2007
0000 DIN EN 60027-4:2006
1991DIN 1304-7:1991 Letter symbols for physical quantities; symbols to be used for electrical machines