Transformadores de medida. Parte 1: Requisitos generales.
Instrument transformers -- Part 1: General requirements
Transformateurs de mesure -- Partie 1: Exigences générales
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17.220.20 / Measurement of electrical and magnetic quantities
CTN 207/SC 38 - Instrument transformers
Corrects: UNE-EN 61869-1:2010
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