• I.S. EN 60247:2004

    Current The latest, up-to-date edition.

    INSULATING LIQUIDS - MEASUREMENT OF RELATIVE PERMITTIVITY, DIELECTRIC DISSIPATION FACTOR (TAN DELTA) AND D.C. RESISTIVITY

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2004

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    INTRODUCTION
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 General
       4.1 Permittivity and dielectric dissipation factor
            (tan delta)
       4.2 Resistivity
       4.3 Sequence of determinations
       4.4 Factors leading to erroneous results
    5 Apparatus
       5.1 Test cell
       5.2 Test equipment
       5.3 Glassware
       5.4 Measuring instrument for permittivity and tan
            delta
       5.5 Measuring instrument for d.c. resistivity
       5.6 Time-measuring device
       5.7 Safety
    6 Cleaning solvent
    7 Cleaning the test cell
       7.1 Trisodium phosphate cleaning procedure
       7.2 Storage of cell
    8 Sampling
    9 Preparation of samples
    10 Conditioning and filling the test cell
       10.1 Cell conditioning
       10.2 Filling the cell
    11 Test temperature
    12 Measurement of dissipation factor (tan delta)
       12.1 Test voltage
       12.2 Measurement
       12.3 Report
    13 Measurement of relative permittivity
       13.1 Measurement
       13.2 Report
    14 Measurement of d.c. resistivity
       14.1 Test voltage
       14.2 Time of electrification
       14.3 Measurement
       14.4 Report
    Annex A (informative) Example of an alternative procedure
             for cleaning the test cell - Ultrasonic procedure
    Annex B (informative) Example of a simplified cleaning
             procedure for a test cell
    Annex C (informative) Alternative procedures for routine
             testing of dielectric dissipation factor and
             resistivity of insulating liquids
    Annex ZA (normative) Normative references to international
             publications with their corresponding European
             publications

    Abstract - (Show below) - (Hide below)

    Defines methods for the determination of the dielectric dissipation factor (tan delta), 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.

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    Development Note For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Current

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC 60250:1969 Recommended methods for the determination of the permittivity and dielectric dissipation factor of electrical insulating materials at power, audio and radio frequencies including metre wavelengths
    IEC 60475:2011 Method of sampling insulating liquids
    EN 61620:1999 Insulating liquids - Determination of the dielectric dissipation factor by measurement of the conductance and capacitance - Test method
    HD 429 : 200S1 METHODS OF TEST FOR VOLUME RESISTIVITY AND SURFACE RESISTIVITY OF SOLID ELECTRICAL INSULATING MATERIALS
    IEC 60093:1980 Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials
    IEC 61620:1998 Insulating liquids - Determination of the dielectric dissipation factor by measurement of the conductance and capacitance - Test method
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