IEC 60521:1976
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).
OEN:
IEC
Langue:
English
Code(s) de l'ICS:
91.140.50
Statut:
Révisé
Date de Publication:
1975-12-31
Numéro Standard:
IEC 60521:1976