IEC 60247:2004 ED3

Insulating liquids - Measurement of relative permittivity, dielectric dissipation factor (tan d) and d.c. resistivity

Publication date:   Feb 6, 2004

General information

60.60 Standard published   Feb 6, 2004

IEC

TC 10

International Standard

17.220.99   Other standards related to electricity and magnetism | 29.040.10   Insulating oils

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Scope

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.

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IEC 60247:1978 ED2

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PUBLISHED
IEC 60247:2004 ED3
60.60 Standard published
Feb 6, 2004