DS DS/EN 61203
DS DSEN 61203 1999-FEB-02 Synthetc organc esters for electrcal purposes - Gude for mantenance of transformer esters n equpment
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This International Standard is a guide to the maintenance of synthetic organic esters, originally complying with the requirements of IEC 1099, in transformers with rated voltages up to 35 kV. It is intended to assist the equipment operator in assessing the quality of the liquid during use in the equipment and maintaining it in a serviceable condition.