RELES ELECTRICOS. RELES DE MEDIDA CON MAS DE UNA MAGNITUD DE ALIMENTACION DE ENTRADA
ELECTRICAL RELAYS. PART 6: MEASURING RELAYS WITH MORE THAN ONE IMPUT ENERGIZING QUANTITY.
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CTN 207 - Transmission and distribution of electrical energy
IEC 155-6:1978 (Identical)
IEC 255-6A:1980 (Identical)
It is cancelled by: UNE 21136-6:1994
