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Norma
IEC 60521:1976

IEC 60521:1976

Class 0.5, 1 and 2 alternating-current watt-hour meters

Compteurs d'énergie active à courant alternatif des classes 0,5, 1 et 2

Fecha:
1976-01-01 /Anulada
Resumen (inglés):
Applies only to newly manufactured induction type watt-hour meters of accuracy classes 0.5, 1 and 2, for the measurement of alternating current electrical active energy of a frequency in the range 45 Hz to 65 Hz and to their type tests only. This publication supersedes IEC 43 (1960), 170 (1964) and 280 (1968).
Resumen (francés):

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Bilingüe / Ruso