EN 61203:1994
Current
The latest, up-to-date edition.
Synthetic organic esters for electrical purposes - Guide for maintenance of transformer esters in equipment
09-07-1994
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
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