2004DS/EN 60247:2004 Insulating liquids - Measurement of relative permittivity, dielectric dissipation factor (tan phi) and d.c. resistivity
1979DS/IEC 247:1979 Measurement of relative permittivity, dielectric dissipation factor and d.c. resistivity of insulating liquids
DS/IEC 247:1979 Measurement of relative permittivity, dielectric dissipation factor and d.c. resistivity of insulating liquids was changed to DS/EN 60247:2004 Insulating liquids - Measurement of relative permittivity, dielectric dissipation factor (tan phi) and d.c. resistivity.