Published
IEC 61203:2025 This document provides procedures and supervision for the use and maintenance of synthetic esters in transformers and other electrical equipment. This document includes recommendations on tests and evaluation procedures and outlines methods for reconditioning and reclaiming the liquid, when necessary
PUBLISHED
SSH EN 61203:1994
PUBLISHED
SSH EN IEC 61203:2025
60.60
Standard published
May 20, 2026