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IEC 60247-ed.3.0
Insulating liquids - Measurement of relative permittivity, dielectric dissipation factor (tan d) and d.c. resistivity
STANDARD published on 6.2.2004
The information about the standard:
Designation standards: IEC 60247-ed.3.0
Publication date standards: 6.2.2004
SKU: NS-409257
The number of pages: 53
Approximate weight : 159 g (0.35 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Other standards related to electricity and magnetismInsulating oils
Annotation of standard text IEC 60247-ed.3.0 :
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. Donne la description de methodes qui permettent la determination du facteur de dissipation dielectrique, de la permittivite relative et de la resistivite en courant continu de tout materiau isolant liquide, a la temperature dessai. Ces methodes sont dabord destinees a la realisation dessais de reference sur des liquides neufs. Elles peuvent egalement etre appliquees aux liquides en service dans des transformateurs, des cables et autres appareillages electriques. Cependant, ces methodes ne peuvent etre utilisees que pour des liquides monophasiques. Lorsquil est demande deffectuer des determinations periodiques, des procedures simplifiees, telles que celles decrites a lAnnexe C, peuvent etre adoptees. Il peut etre necessaire dutiliser des procedures de nettoyage differentes pour les liquides isolants autres que les hydrocarbures. Les principales modifications concernent la methode de mesure preferentielle.
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