• NF EN 61203 : 1994

    Current The latest, up-to-date edition.

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

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    Published date:  13-01-2013

    Publisher:  Association Francaise de Normalisation

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

    Committees responsible
    National foreword
    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)

    Acts as a guide for the maintenance of synthetic organic esters in transformers with rated voltages up to 35 kV. Will assist the equipment operator in assessing the quality of the liquid during use in the equipment and maintaining it in a serviceable condition. Outlines methods for reconditioning ester transformer liquid.

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    Development Note Indice de classement: C27-451. (05/2015)
    Document Type Standard
    Publisher Association Francaise de Normalisation
    Status Current
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