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    I.S. EN 61203:1995

    Current The latest, up-to-date edition.

    SYNTHETIC ORGANIC ESTERS FOR ELECTRICAL PURPOSES - GUIDE FOR MAINTENANCE OF TRANSFORMER ESTERS IN EQUIPMENT

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-1995

    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.

    Dates of withdrawal of national standards are available from NSAI.

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

    FOREWORD
    1 Scope
    2 Normative references
    3 Tests and their significance
      3.1 Colour and appearance
      3.2 Density
      3.3 Kinematic viscosity
      3.4 Flash point - Fire point
      3.5 Water content
      3.6 Neutralization value
      3.7 Breakdown voltage
      3.8 D.C. resistivity
      3.9 Dielectric dissipation factor
      3.10 Diagnosis by gas analysis (IEC 567 and IEC 599)
    4 Frequency of examination of liquids in service
    5 Sampling
    6 Testing procedures
      6.1 Field screening tests
      6.2 Laboratory tests
    7 Classification of esters in service
    8 Treatment of ester liquids in group 2
      8.1 Vacuum treatment and filtration
      8.2 Molecular sieve and filtration
    9 Materials used for maintenance equipment
    ANNEX ZA (normative) OTHER INTERNATIONAL PUBLICATIONS
             QUOTED IN THIS STANDARD WITH THE REFERENCES OF THE
             RELEVANT EUROPEAN PUBLICATIONS

    Abstract - (Show below) - (Hide below)

    Assists the equipment operator in assessing the quality of the liquid during use in the equipment and maintaining it in a serviceable condition.

    General Product Information - (Show below) - (Hide below)

    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)

    HD 397 : 200S1 INTERPRETATION OF THE ANALYSIS OF GASES IN TRANSFORMERS AND OTHER OIL-FILLED ELECTRICAL EQUIPMENT IN SERVICE
    IEC 60599:2015 Mineral oil-filled electrical equipment in service - Guidance on the interpretation of dissolved and free gases analysis
    EN 61099:2010 Insulating liquids - Specifications for unused synthetic organic esters for electrical purposes
    IEC 60567:2011 Oil-filled electrical equipment - Sampling of gases and analysis of free and dissolved gases - Guidance
    IEC 61099:2010 Insulating liquids - Specifications for unused synthetic organic esters for electrical purposes
    EN 60567:2011 OIL-FILLED ELECTRICAL EQUIPMENT - SAMPLING OF GASES AND ANALYSIS OF FREE AND DISSOLVED GASES - GUIDANCE (IEC 60567:2011)
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