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

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.

Isolierflüssigkeiten - Messung der Permittivitätszahl, des dielektrischen Verlustfaktors (tan d) und des spezifischen Gleichstrom-Widerstandes

Liquides isolants - Mesure de la permittivité relative, du facteur de dissipation diélectrique (tan d) et de la résistivité en courant continu

Donne la description de méthodes qui permettent la détermination du facteur de dissipation diélectrique, de la permittivité relative et de la résistivité en courant continu de tout matériau isolant liquide, à la température d'essai. Ces méthodes sont d'abord destinées à la réalisation d'essais de référence sur des liquides neufs. Elles peuvent également être appliquées aux liquides en service dans des transformateurs, des câbles et autres appareillages électriques. Cependant, ces méthodes ne peuvent être utilisées que pour des liquides monophasiques. Lorsqu'il est demandé d'effectuer des déterminations périodiques, des procédures simplifiées, telles que celles décrites à l'Annexe C, peuvent être adoptées. Il peut être nécessaire d'utiliser des procédures de nettoyage différentes pour les liquides isolants autres que les hydrocarbures. Les principales modifications concernent la méthode de mesure préférentielle.

Izolirne tekočine - Merjenje relativne dielektrične konstante, faktor dielektrične izgube (tangens <delta>) in enosmerne upornosti (IEC 60247:2004)

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september 2004
Izolirne tekočine - Merjenje relativne dielektrične konstante, faktor dielektrične
izgube (tangens ) in enosmerne upornosti (IEC 60247:2004)
Insulating liquids - Measurement of relative permittivity, dielectric dissipation factor
(tan ) and dc resistivity (IEC 60247:2004)
ICS 29.040.01 Referenčna številka
SIST EN 60247:2004(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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ICS 17.220.99; 29.040.10

English version

Insulating liquids –
Measurement of relative permittivity,
dielectric dissipation factor (tan δ) and d.c. resistivity
(IEC 60247:2004)

Liquides isolants –  Isolierflüssigkeiten –
Mesure de la permittivité relative, Messung der Permittivitätszahl,
du facteur de dissipation diélectrique
des dielektrischen Verlustfaktors (tan δ)
(tan δ) et de la résistivité en courant und des spezifischen Gleichstrom-
continu Widerstandes
(CEI 60247:2004) (IEC 60247:2004)

This European Standard was approved by CENELEC on 2004-04-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60247:2004 E

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EN 60247:2004 - 2 -
The text of document 10/573/FDIS, future edition 3 of IEC 60247, prepared by IEC TC 10, Fluids for
electrotechnical applications, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60247 on 2004-04-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2005-01-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-04-01
Annex ZA has been added by CENELEC.
Endorsement notice
The text of the International Standard IEC 60247:2004 was approved by CENELEC as a European
Standard without any modification.

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- 3 - EN 60247:2004
Annex ZA

Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1) 2)
IEC 60093 - Methods of test for volume resistivity and HD 429 S1 1983
surface resistivity of solid electrical
insulating materials

IEC 60250 - Recommended methods for the - -
determination of the permittivity and
dielectric dissipation factor of electrical
insulating materials at power, audio and
radio frequencies including metre

IEC 60475 - Method of sampling liquid dielectrics - -

1) 2)
IEC 61620 - Insulating liquids - Determination of the EN 61620 1999
dielectric dissipation factor by
measurement of the conductance and
capacitance - Test method

Undated reference.
Valid edition at date of issue.

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Troisième édi

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