IEC 60247 Ed. 3.0现行
Insulating liquids - Measurement of relative permittivity, dielectric dissipation factor (tan d) and d.c. resistivity
出版：International Electrotechnical Committee
专家解读视频
Describes methods for the determination of the dielectric dissipation factor, relative permittivity and d.c. resistivity of any insulating liquid material at the test temperature. The methods are primarily intended for making reference tests on unused liquids. They can also be applied to liquids in service in transformers, cables and other electrical apparatus. However the method is applicable to a single phase liquid only. When it is desired to make routine determinations, simplified procedures, as described in Annex C, may be adopted. With insulating liquids other than hydrocarbons, alternative cleaning procedures may be required. The main changes from the previous edition deal with the preferred measurement method.
AS 1767.2.2-2008 - Identical
BS EN 60247:2004 - Identical
DIN EN 60247 (2005-01) - Identical
VDE 0380-2:2005 - Identical
I.S. EN 60247:2004 - Identical
NF EN 60247:2004 - Identical
PN EN 60247:2005 - Identical
SS EN 60247 Ed. 1 (2004) - Identical
UNE EN 60247:2004 - Identical
NEN EN IEC 60247:2005 - Identical
OVE/ONORM EN 60247:2005 - Identical
PN EN 60247:2008 - Identical
