The standard frequencies are the frequencies to be adopted for single-phase and three-phase a.c. systems, for installations in ships, for a.c. traction systems, for tools and for aircraft. This standardization is limited to frequencies up to 10000 Hz.
DIN EN 60196:2010 history
2010DIN EN 60196:2010 IEC standard frequencies (IEC 60196:2009); German version EN 60196:2009
0000 DIN IEC 60196:2007
1969DIN 40005:1969 Rated frequencies from 16<(hoch)2>/<(Index)3> to 10000 Hz (c/s)